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Year : 1995  |  Volume : 61  |  Issue : 1  |  Page : 50-51

Bilateral pigmented hairy epidermal naevus

Correspondence Address:
B Yogesh Shah

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Source of Support: None, Conflict of Interest: None

PMID: 20952877

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A 15-year-old boy developed bilateral Becker's naevus over scapular region without any associated abnormality.

Keywords: Becker′s naevus

How to cite this article:
Shah B Y, Solanki B R, Shah N A, Shah. Bilateral pigmented hairy epidermal naevus. Indian J Dermatol Venereol Leprol 1995;61:50-1

How to cite this URL:
Shah B Y, Solanki B R, Shah N A, Shah. Bilateral pigmented hairy epidermal naevus. Indian J Dermatol Venereol Leprol [serial online] 1995 [cited 2020 Feb 26];61:50-1. Available from: http://www.ijdvl.com/text.asp?1995/61/1/50/4131

  Introduction Top

Pigmented hairy epidermal naevus was first described in 1949 by Becker.[1],[2] It is a variety of epidermal naevus with dominant clinical features of pigmentation, hypertrichosis and lack of warty change. Characteristically it is a unilateral lesion of the shoulder usually in males and it is first noticed during adolescence.[3] It may affect other sites and may be bilateral or multiple.[3],[4] Histological examination may show no epidermal thickening. Naevus cells are not seen in the dermis.[3]

  Case Report Top

A 15-year-old male patient developed Becker's naevus on right side of scapular region at the age of 13. After 2 years, he had a Becker's naevus on left side of scapular region. The area of macular pigmentation was non-infiltrated and margin was diffuse and irregular. There were fine hairs over pigmented area on both sides. Becker's naevi on both sides [Figure - 1] were gradually spreading. There was absence of any other naevi on naeval area and elsewhere on the skin. No other congenital abnormality was detected. No hypertrichosis or cafe-au-lait spots were present elsewhere on the body.

General examination and systemic examination revealed no abnormality. Complete blood examination, urine examination and X-ray chest and spine were normal. Biopsy report showed slight acanthosis and regular elongation of the rete ridges in the epidermis. There was hyperpigmentation of the basal layer and few melanophages were present in the upper dermis [Figure - 2].

  Discussion Top

Becker's naevus is a relatively common condition, present in about 0.5% of young men. It is about five times more common in the male than in the female. It may become conspicuous only after exposure to sunlight. The most common sites are shoulder, anterior chest or scapular region.[4] It may enlarge slowly for a year or two after presentation and then it stabilizes and appears to persist indefinately.[5]

The characteristic blotchy macular outline of the naevi recall the hypothesis of Whimster (1961) that the skin comprises small partially independent macular areas that do not reveal themselves except during the disease process or development. The prominence of the naevus following exposure to sunlight and particularly at puberty may be the result of actinic or hormonal stimuli on a group of preconditioned abnormal cells in such areas.[3] The late onset, the hypertrichosis and the male predominance all suggest the local androgen hypersensitivity.[4] The "Progressive Cribriform" and "Zosteriform hyperpigmentation" may be a non-hypertrichotic variant of Becker's Naevus.[4]

Bilateral Becker's naevus is extremely rare. To the best of our knowledge bilateral Becker's naevus is not reported in Indian literature.

  References Top

1.Katz R. Epidermal naevus. In : Clinical Dermatology (Demis D J, Dobson R L, Macguire J, eds), 5th edn. Harper and Row Publishers, 1977, Chap. 1.12, 2.  Back to cited text no. 1    
2.Lever W F, Lever G S. Benign melanocytic tumours and malignant melanoma. In : Histopathology of the Skin, 7th edn, J B Lippincott, 774.  Back to cited text no. 2    
3.Copeman PWM, Wilson Jones EWJ. Pigmented hairy epidermal naevus (Becker). Arch Dermatol 1965;92:249-51.  Back to cited text no. 3    
4.Atherton D J. Naevi and other development defects. In : Textbook of Dermatology (Champion R H, Burten J L, Ebling FJG, eds), 5th edn. Oxford : Blackwell Scientific Publications, 1992;462-6.  Back to cited text no. 4    
5.Vincent C Y HO, McLean D L. Benign epithelial tumours. In : Dermatology in General Medicine (Fitzpartick T B, Eisen A Z, Wolff K, et al, eds), 4th edn. McGraw-Hill, 1993,863.  Back to cited text no. 5    


[Figure - 1], [Figure - 2]


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