Treatment is primarily for cosmetic reasons and has varying effectiveness. We present such a case which will be of interest to the budding dental practitioner. Hoffman D, Ratner D. Diagnosis and management of a changing congenital melanocytic nevus. Becker nevus is considered a benign process; however, an association with melanoma was discussed in a series of 9 patients in whom both Becker nevus and melanoma developed. Comparisons may be useful for a differential diagnosis. This is a Becker's naevus with additional abnormalities of underlying tissues derived from ectoderm. ... Becker’s nevus can also form a differential diagnosis especially in a brown hypertrichotic plaque. Rare disease Becker’s nevus syndrome with quadriparesis Cecilia Fernandes, Ayushi Agrawal, Binod Bade Shreshtha, Nikunj Yogi, Iype Cherian Department of Neurosurgery, Manipal College of Medical Sciences, Pokhara, Nepal Correspondence to Iype Cherian, driypecherian@gmail.com Summary A 12-year-old girl presented to Manipal Teaching Hospital with quadriparesis of 8 … Indian J Dermatol. The clinical differential diagnosis has been reviewed 3,20,22 and should include congenital melanocytic (pigmented) nevus, Becker's melanosis, solitary mastocytoma, piloleiomyoma, café-au-lait spots, and nevus pilosus. The clinical differential diagnosis of CSMH includes a congenital pigmented hairy nevocellular nevus, Becker's nevus, cafe au lait spot, and solitary mastocytoma,121416 none of which are indurated or have a positive pseudo-Darier's sign. It usually follows sun exposure. This work also discusses the various differential diagnoses that can be considered in similar cases. After puberty it often becomes darker and quite hairy, a feature also called hypertrichosis. 29. The Becker nevus resembles the cafe-au-lait stain, but differs from it in the reticulated fringe areas and the frequent hypertrichosis. 4. de Almeida HL Jr, Duquia RP, Souza PR, et al. Nevoid hypertrichosis; faun-tail nevus Disorder characterized by solitary or few circumscribed areas of terminal hair growth, which is abnormal in length, shaft diameter, or … A rare case of multiple Becker's nevi without systemic involvement. First a greyish-brown pigmentation appears. Epidermal nevi frequently have more epidermal changes and lie … 2004 Dec 1. The histology and differential diagnosis of Spitz nevus. In this series, 5 patients developed melanoma on the same body site as the Becker nevus, but in 1 patient only did melanoma develop within the Becker nevus. An Bras Dermatol. The lesion gradually enlarges with hypertrichosis over several years. Nevus Spitz should be distinguished from malignant melanoma of the skin. Inconspicuous melanocytic nevi do not require treatment. Richard J. Grostern, in Gattuso's Differential Diagnosis in Surgical Pathology (Fourth Edition), 2022. Read full chapter. ... A clinical diagnosis of an unusual form of Becker nevus was made and a skin biopsy was performed. Occasionally, a congenital Becker nevus may simulate congenital melanocytic nevus or nevus spilus, necessitating histologic examination to distinguish between lesions. The radiographic differential diagnosis included desmoid-type fibromatosis or a soft-tissue sarcoma, and excision was recommended. 2014;59(4):421. Epidermal nevi, also hamartomas, more commonly appear along lines of Blaschko. A biopsy showed acanthosis and elongation of the epidermal crests, with increased pigmentation of the basal layer and a large number of irregular, elongated smooth muscle fibers that confirmed the diagnosis of Becker nevus. It typically occurs on one shoulder and upper trunk but occasionally occurs elsewhere on the body. A Becker's nevus often becomes darker, and excessive hair growth (hypertrichosis) and acne may develop within the nevus. [1][2] In some instances, the differential diagnosis between large CMN and Becker nevus (BN) may be difficult. Skinmed. Clinicopathologic characteristics of early-onset Becker's nevus in Korean children and adolescents Androgens themselves do not seem to be related to the development of BN but play only an aggravating role especially in male patients. Differential Diagnosis Albright syndrome Congenital melanocytic nevus Congenital smooth muscle hamartoma Overdevelopment of a tissue such as adrenal gland, limb, fingers or toes Post-inflammatory hyperpigmentation Smooth muscle hamartoma Under the development of underlying structures such as breast, fat, limb etc. Adams SP(1). Keratosis pilaris (KP) is a genetic disorder of keratinization of hair follicles of the skin. [Medline]. Becker nevus is considered a benign process; however, an association with melanoma was discussed in a series of 9 patients in whom both Becker nevus and melanoma developed. Becker's nevus is an epidermal nevus presenting as hyperpigmented macules. Cancer. It is sometimes present from birth. The presence of a hypertrichotic “giant” nevus spilus tardivus (Becker’s nevus) is also a rare finding in this particular case. Background: Dermoscopic features of congenital melanocytic nevi (CMN) have been mostly assessed by high-resolution video-dermoscopy. However, optical dermoscopy with the 10-fold magnification is largely available. In some instances, the differential diagnosis between large CMN and Becker nevus (BN) may be difficult. Basal Cell CarcinomaDermatologic Manifestations of Juvenile XanthogranulomaDermatologic Manifestations of Pyogenic Granuloma (Lobular Capillary Hemangioma)Melanocytic NeviNongenital Warts In some instances, the differential diagnosis between large CMN and Becker nevus (BN) may be difficult. Naevus spilus: This is similar … 3 The resulting birthmark is usually large, brown, and on one side of … On histopathology , Spitz nevi characteristically have vertically arranged nests of nevus cells that have both a spindled and an epithelioid morphology. We present such a case which will be of interest to the budding dental practitioner. First a greyish-brown pigmentation appears. Intraoperatively, the mass was noted to involve the fascia and subcutis. Dermacase. With the excep¬ tion of Becker's nevus, all can be distinguished histologically. Differential diagnosis This section has been translated automatically. Giant congenital melanocytic nevi: 40 years of experience with the serial excision technique. Author information: (1)Department of Dermatology, University of Calgary. Genetic similarities between Spitz nevus and Spitzoid melanoma in children. Differential diagnosis of CALS. ... A clinical diagnosis of an unusual form of Becker nevus was made and a skin biopsy was performed. Pearls and Other Issues Becker's nevus is a focal epidermal hypermelanotic disorder. ... Taken together, these features are consistent with the patient's clinical diagnosis of a Becker nevus. This work also discusses the various differential diagnoses that can be considered in similar cases. The presence of a hypertrichotic “giant” nevus spilus tardivus (Becker’s nevus) is also a rare finding in this particular case. In this series, 5 patients developed melanoma on the same body site as the Becker nevus, but in 1 patient only did melanoma develop within the Becker nevus. When it is acquired, it may be confused with Becker's nevus. Differential diagnosis includes cutaneous-skeletal hypophosphatemia syndrome, nevus comedonicus syndrome, Becker nevus syndrome, phakomatosis pigmentokeratotica, CHILD syndrome, the spectrum of PIK3CA-related overgrowth syndrome, SOLAMEN (segmental outgrowth-lipomatosis-arteriovenous malformation-epidermal nevus syndrome), and CLOVES … It usually follows sun exposure. Differential Diagnosis : History: Becker’s melanosis, also called Becker’s pigmented hairy nevus, occurs most commonly as a large, unilateral patch showing hyperpigmentation and hypertrichosis on the shoulder, back, or chest of an adult male. hamartoma (NCH), Becker’s nevus, Bednar tumors and cellular blue nevi are close mimcs. Benign pigmented skin lesions and melanocytic nevi (moles) are common in children and adolescents. The differential diagnosis includes Mongolian spots, lentigines, nevus spilus, nevocellular nevi, and Becker's nevi. 1. Occult spinal dysraphism should be excluded if the lesion is near the midline of the spine. Society Information. The presence of a hypertrichotic "giant" nevus spilus tardivus (Becker's nevus) is also a rare finding in this particular case. Becker's nevus syndrome is a rare entity characterised by the presence of Becker's nevus, 1 a well-circumscribed hyperpigmented patch with overlying hypertrichosis which affects a particular area, most commonly the thorax and scapular region, and associated abnormalities which consist of one or more of the following: ipsilateral breast … Another close differential diagnosis was non-hypertrichotic variant of Becker's nevus. Pigmentation (darkening of skin color) may be subtle at first, but the nevus often darkens after puberty and expands. Men get sick 5 times more often than women. Histopathological The clinical differential diagnosis included mastocytoma, epidermal nevus, congenital pigmented nevus, and congenital Becker's nevus. Becker's Nevus forms during one's childhood or adolescent stage and the skin lesions are mostly observed on the shoulders and back. This study was aimed at evaluating the clinicopathological aspects of BN in Korean cases in differential diagnosis with CSMH. In contrast to CALMs, lentigines are usually small (less than 1 cm) and have variable salt-and-pepper-like brown pigmentation. Linear and whorled nevoid hypermelanosis (LWNH) was first described by Kalter and colleagues in 1988. A diagnosis of Becker nevus is usually made clinically, but a biopsy can be performed to rule out differential diagnoses if necessary. The differential diagnosis of hyperpigmented patches in a blocklike pattern may include (A, B) nonsyndromic café-au-lait macules, (C) a Becker nevus that tends to break apart into smaller macules at its periphery, and (D) a speckled lentiginous nevus, which can have a variable number of superimposed macules and papules. 1-3 The clinical history usually rules out other lesions in the differential diagnosis, which includes congenital melanocytic nevus, nevus spilus, caf au lait patch, and postinflammatory hyperpigmentation. ... Congenital Melanocytic nevus Becker's Nevus Speckled Lentiginous Nevus Segmental Pigmentation Disorder. Becker nevi on the lower extremities, head, and hands have been reported. It is a type of epidermal naevus syndrome. A Becker nevus is characterized by overactivity of hair follicles and pigment cells (melanocytes). Onychorrhexis is believed to be a result of disordered keratinization in the nail matrix and is due to a variety of conditions: Normal aging. This study was aimed at evaluating the clinicopathological aspects of BN in Korean cases in differential diagnosis with CSMH. 1-3 The clinical history usually rules out other lesions in the differential diagnosis, which includes congenital melanocytic nevus, nevus spilus, café au lait patch, and postinflammatory hyperpigmentation. Becker nevus on the hand. differential diagnoses, and treatment options are discussed. 2017 Mar-Apr. Skin biopsy was done with the differential diagnosis of Becker’s nevus (BN), CMN and giant café-au-lait spot. 29. Epidermal naevus characterized by an asymptomatic irregular macular hyperpigmentation with hypertrichosis occurring mainly on the shoulders, anterior chest, or scapular region of adolescent males. After a variable interval, usually a year or two, thick dark hairs appear in the region of the pigmented … Becker's nevus or melanosis is an acquired pigmented hairy nevus with both epidermal and dermal components, commonly seen in males. Surgical excision is performed with obligatory histological examination. The differential diagnosis of CSMH includes: Congenital melanocytic nevus, Becker's nevus, solitary mastocytoma, piloleiomyoma, café-au-lait spots, and nevus pilosus. Longitudinal splitting may also occur. In the differential diagnosis, we included idiopathic eruptive macular pigmentation, confluent and reticulated papillomatosis, and BN. Epidermal naevus characterized by an asymptomatic irregular macular hyperpigmentation with hypertrichosis occurring mainly on the shoulders, anterior chest, or scapular region of adolescent males. differential diagnoses, and treatment options are discussed. Can Fam Physician. BN has been described as acquired as found in a similar entity, congenital smooth muscle hamartoma (CSMH). Neurotized congenital melanocytic nevus and pigmented neurofibroma (PNF) are close mimics and pose a clinicopathological challenge. In contrast to CALMs, lentigines are usually small (less than 1 cm) and have variable salt-and-pepper-like brown pigmentation. Background. For multiple lesions, the main differential diagnosis is fetal alcohol syndrome. 3 Becker's nevus usually manifests as a solitary lesion that predominantly involves the upper trunk, scapular region, or upper arm unilaterally. Nevus (plural nevi) is a nonspecific medical term for a visible, circumscribed, chronic lesion of the skin or mucosa. Becker's Nevus may present. Evidence of epidermal changes, smooth muscle or hypertrichosis all favor diagnosis to Becker nevus. Mongolian spots are easily differentiated from CALMs by their blue-green color and indistinct borders. Although differentiation of CMN and PNF is difficult due to sometimes overlap of clinic-pathological features, Becker's nevus can also form a differential diagnosis especially in a brown hypertrichotic plaque. Nevus Becker. This work also discusses the various differential diagnoses that can be considered in similar cases. We present such a case which will be of interest to the budding dental practitioner. Becker's Nevus causes abnormal skin discoloration, abnormal hair growth, and thickening of skin (verrucous skin surface) It is an uncommon condition that mostly affects males. There may be underdevelopment or overdevelopment of underlying structures, including: Smooth muscle hamartoma. Al Aboud K, Al Hawsawi K. Becker nevus on the hand. Background. It morphologically presents as unilateral, hyperpigmented, hypertrichotic patch on upper trunk, proximal upper extremities and arms. Blue-gray spots seen in congenital dermal melanocytosis typically overlie the buttocks or lumbosacral area. The American Academy of Dermatology was founded in 1938. The aims of this work were: (1) to assess by dermoscopy with the … Becker nevi on the lower extremities, head, and hands have been reported. Occult spinal dysraphism should be excluded if the lesion is near the midline of the spine. Al Aboud K(1), Al Hawsawi K. Author information: (1)Department of Medicine, Dermatology Unit, King Faisal Hospital, Taif, Saudi Arabia. Subscription Required. other topics related to the prevention, diagnosis, and treatment of disorders of the skin, hair, and nails; More. A Becker naevus is a large one-sided brown patch, sometimes over half the upper back or chest. Publication types Case Reports MeSH terms Adolescent Biopsy, Needle This is a Becker's naevus with additional abnormalities of underlying tissues derived from ectoderm. Distinguishing CSMH from congenital melanocytic nevus might be difficult by using only clinical criteria. Citations may include links to full text content from PubMed Central and publisher web sites. The clinical differential diagnosis of a single CSMH includes congenital melanocytic (pigmented) nevus, Becker's melanosis, solitary mastocytoma, pilo-leiomyoma, cafe-au-lait spots, and nevus pilosus and connective tissues nevi. Herein, we report a case of giant bilateral Becker's nevus involving shoulder, scapular region, anterior chest and both the arms. View chapter Purchase book. Hypoplasia of breast. Commonest histopathological association of Becker's nevus is smooth muscle hamartoma. Becker's nevus syndrome is a part of epidermal nevus syndrome, which is a disease complex of epidermal nevi and developmental abnormalities of different organ systems. Skin biopsy was done with the differential diagnosis of Becker’s nevus (BN), CMN and giant café-au-lait spot. Becker naevus Becker naevus syndrome ; Nevus of Ota is characteristically in the trigeminal distribution of the face. Becker’s nevus syndrome. Epidermal nevi are the result of cutaneous mosaicism. A clinical diagnosis of Becker nevus was made and confirmed histopathologically. However, Becker's nevus presenting as … Treatment. Management. Synonym: Becker-Reuter Syndrome. Asymptomatic, irregular, tan-to-brown patch, most commonly located over the chest, shoulder, or back; often at the time of puberty; thick, brown-to-black hairs develops both within and in close proximity to the patch; possibly associated with underlying smooth muscle hamartoma They may be present at birth or manifest themselves in early childhood. The differential diagnosis of CALM includes speckled lentiginous nevus (SLN, or nevus spilus), lentigo, congenital melanocytic nevus, Becker's nevus, and segmental pigmentation disorder. Occasionally, a congenital Becker nevus may simulate congenital melanocytic nevus or nevus spilus, necessitating histologic examination to distinguish between lesions. 1997 May;43:855, 863. The other dermatoses following Blaschko’s lines, in the descending order of frequency seen in this study were linear epidermal nevus, linear lichen planus, linear Differential Diagnosis : History: Smooth-muscle hamartoma is an uncommon, usually congenital cutaneous hyperplasia of the arrectores pilorum muscles. Onset in infancy, bilateral distribution, location on forearms, and associated … Diagnosis Various differential diagnoses of pigmented skin lesions, by relative incidence and malignancy potential, including "Spitz, Reed or spindle nevus" at top right. DIAGNOSIS: Becker melanosis. 92 (2):256-259. Considering high occurrence in exposed areas, BN may distress patients severely. ; Regular, specialist skin check-ups, 1 … CALS not essential for diagnosis, but may be present Associated with vestibular schwannomas and other neoplasms. DIFFERENTIAL DIAGNOSIS The differential diagnosis includes congenital melanocytic nevus, café au lait patch, Albright syndrome, and nevus spi- ... Nischal KC, et al. On histopathology, hyperkeratosis with slight acanthosis, regular elongation of rete ridges and increased basal and suprabasal . There may be underdevelopment or overdevelopment of underlying structures, including: Smooth muscle hamartoma. Binder SW, ... , Van den Oord J, Geybels MS, Becker JC, Zur Hausen A, Winnepenninckx V. Front Med (Lausanne), 5:344, 13 Dec 2018 ... criteria for histological diagnosis and its reporting. But lack of increase in dermal smooth muscles and presence of pigment incontinence was against it. Differential diagnosis Becker's nevi are often mistaken for congenital melanocytic nevi, which are more elevated and are present since birth. 1 This benign area of hyperpigmentation typically manifests as a circumscribed patch with an irregular border on the upper trunk, shoulders, or upper arms of young men. Hypoplasia of breast. We report this patient for the rarity of presentation. Benign pigmented skin lesions, including lentigines, café-au-lait macules, Becker nevi, and dermal melanocytoses (Mongolian spots, nevus of Ota, and nevus of Ito), will be discussed below. The most important clinical differential diagnosis includes the connective tissue nevus and Becker's nevus. Differential Diagnosis. Authors / Editorial Board This page lists authors by institution and topics associated with the author in their capacity as Editor-in-Chief, Deputy Editor-in-Chief, Editorial Board member, Resident / Fellow Advisory Board member or … ... Occult Becker’s nevus with mild folliculitis J Am Acad Dermatol 1989;20(2 Pt 1):296–297. Differential Diagnosis : History: Becker’s melanosis, also called Becker’s pigmented hairy nevus, occurs most commonly as a large, unilateral patch showing hyperpigmentation and hypertrichosis on the shoulder, back, or chest of an adult male. It is the largest, most influential and representative dermatology group in the United States. Subscription Required. Becker melanosis (also called Becker’s nevus or Becker’s pigmentary hamartoma) is an organoid hamartoma that is most common among males. Becker naevus syndrome. However, since the risk of developing malignant melanoma is increased in patients with many nevi, the risk status of the patient should always be documented by determining skin type, age, family history, UV exposure, and the number and degree of dysplasia of existing nevi. Submit your diagnosis to see full explanation. It is most commonly located on the upper trunk of young men. Occasionally acne may develop in the naevus. If hypertrichosis is not present, lesions may be confused with café-au-lait patches or postinflammatory hyperpigmentation. Differential Diagnosis & Pitfalls Giant congenital nevi are darker and have a distorted hair pattern, often with coarse hair, unlike the regular but exuberant hair in a Becker nevus. The clinical differential diagnosis has been reviewed 3,20,22 and should include congenital melanocytic (pigmented) nevus, Becker's melanosis, solitary mastocytoma, piloleiomyoma, café-au-lait spots, and nevus pilosus. Histologic examination shows characteristic changes, but … Mongolian spots are easily differentiated from CALMs by their blue-green color and indistinct borders. A Becker nevus without hypertrichosis may resemble a café au lait patch or postinflammatory hyperpigmentation. Skin biopsy provides histologic diagnosis of Becker’s nevus and helps distinguish it from other clinical entities. There is no effective treatment for the majority of Becker nevi. On histopathology, hyperkeratosis with slight acanthosis, regular elongation of rete ridges and increased basal and suprabasal . 2006 Sep-Oct. 5(5):242-5. . A list of the more common hyperpigmentation disorders is listed in Table 1. The first fingernails are most commonly affected. BN has been described as acquired as found in a similar entity, congenital smooth muscle hamartoma (CSMH). When it is acquired, it may be confused with Becker's nevus. Becker's nevus (BN) is a common cutaneous hamartoma, but it is often misdiagnosed or overlooked. This study was aimed at evaluating the clinicopathological aspects of BN in Korean cases in differential diagnosis with CSMH. Though multiple Becker's nevi have been described sporadically in literature ,, there have been only few reports wherein the lesions involved trunk and lower limbs concurrently.In our case, approximately 25% of the total body surface was … Differential Diagnosis of CALS. Becker’s nevus diagnosis A Becker’s nevus on the upper trunk in a peripubertal male is difficult to confuse with other pigmented lesions. Epidermal nevi. nevi or naevi) is a skin disorder predominantly affecting males. Becker's nevus is an uncommon pigmented smooth muscle hamartoma that develops during adolescence and occurs primarily in young men. In 1949, S. William Becker first described the lesion that carries his name as a “concurrent melanosis and hypertrichosis in the distribution of nevus unius lateris.” 1 Now found to be a common disorder, Becker's nevus, or Becker's melanosis, usually begins during the second decade of life as a circumscribed, hyperpigmented patch with an irregular outline that … 101 (11):2636-40. Patients with suspected Becker nevus should also be examined for extracutaneous involvement. Becker's nevus. Differential Diagnosis : History: Smooth-muscle hamartoma is an uncommon, usually congenital cutaneous hyperplasia of the arrectores pilorum muscles. Keywords: melanocytic nevus, hamartomas, developmental defects, pigmentary disorders, becker's nevus Introduction Becker's nevus (BN) is one of the cutaneous hamartomatous lesions that often presents as a single unilateral pigmented patch on the upper trunk, scapular region, or upper arm that could be accompanied by hypertrichosis. Differential diagnosis. ; Dermal melanocyte hamartoma is … PubMed® comprises more than 33 million citations for biomedical literature from MEDLINE, life science journals, and online books. Becker's nevus (BN) presents as a hairy patch or plaque with or without proliferation of the dermal smooth muscles. The causes and pathogenesis of the disease are unknown. We present a case of pigmented hypertrichotic plaque over lumbosacral region and discuss the differential diagnosis and its clinical, histopathological and immunohistochemistry features which may aid in differentiation. Neurotized congenital melanocytic nevus and pigmented neurofibroma (PNF) are close mimics and pose a clinicopathological challenge. Al Aboud K, Al Hawsawi K. Becker nevus on the hand. Analysis of mutations in B-RAF, N-RAS, and H-RAS genes in the differential diagnosis of Spitz nevus and spitzoid melanoma. The differential diagnosis includes Mongolian spots, lentigines, nevus spilus, nevocellular nevi, and Becker's nevi. We present a case of pigmented hypertrichotic plaque over lumbosacral region and discuss the differential diagnosis and its clinical, histopathological and immunohistochemistry features which may aid in differentiation. Affected individuals have a large dark brown patch of skin that has often been reported to involve the shoulder, back or chest. The distinction between SLN, congenital melanocytic nevi, … Different clinical features of Becker nevi, associated findings, differential diagnoses, and treatment options are discussed. If a connective tissue nevus as a sign of a … PMID: 3284306 Abstract Becker's nevus is a benign lesion that may be congenital or acquired, macular or papular, hairless or hypertrichotic. Melasma is much more common in women, whereas Becker's nevus occurs five times more frequently in males. Onychorrhexis refers to alternating longitudinal thickening and thinning, or ridging, of the nail plate. Becker's Nevus Develops hypertrichosis in adolescence. 48543002 – Nevus of Ito Look For. Becker naevus syndrome. Diagnostic Pearls. The sporadic occurrence and asymmetrical distribution of … Becker melanosis is usually … It usually begins during the second decade of life as a well-circumscribed hyperpigmented patch with an irregular border. Most of the hyperpigmentation disorders can be distinguished clinically. Becker's nevus, also called Becker's melanosis and Becker's pigmentary hamartoma, is a cutaneous hamartoma characterized by circumscribed hyperpigmentation with hypertrichosis. Differential Diagnosis & Pitfalls. Becker's nevus syndrome is a rare entity characterised by the presence of Becker's nevus,1 a well-circumscribed hyperpigmented patch with overlying hypertrichosis which affects a particular area, most commonly the thorax and scapular region, and associated abnormalities which consist of one or more of the following: ipsilateral breast hypoplasia,2 3 ipsilateral … After a variable interval, usually a year or two, thick dark hairs appear in the region of the pigmented … Becker nevus is an acquired patch or thin plaque of hyperpigmentation and excessive hair growth that was first described in 1949 by … Background Becker’s nevus (BN) presents as a hairy patch or plaque with or without proliferation of the dermal smooth muscles. It is a type of epidermal naevus syndrome. In fact, this is made by histopathological examination. Mutti LA, Mascarenhas MRM, Paiva JMG, Golcman R, Enokihara MY, Golcman B. van Dijk MC, Bernsen MR, Ruiter DJ. Skin nonmelanocytic tumor - Becker's nevus (Becker's melanosis) First described by Becker in 1948 (Arch Dermatol 1948;60:155) Present in 0.5% of young men (Ann Dermatol Venereol 1981;108:41) Sex ratio close to 1:1 despite apparent increase in women due to association with breast hypoplasia (An Bras Dermatol 2010;85:379) Associated with high … First documented in 1948 by US dermatologist Samuel William Becker (1894-1964), Becker's nevus (also naevus; pl. The nevus is characterized by hypertrichosis and hyperpigmentation and is usually located unilaterally over the shoulder, upper arm, and scapula. amoa65@hotmail.com PMID: 12506884 [Indexed for MEDLINE] Publication Types: Case Reports; MeSH terms. The clinical diagnosis was Becker nevus (Figure 1). A Becker's nevus typically begins to develop around puberty on the shoulder or upper trunk, although it may develop on other areas of the body.
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