Depressed plaques over back in a 35-year-old male
Department of Dermatology, Venerology and Leprology, PGIMER, CHD - 160 012
|How to cite this article:
Jain A, De D, Dogra S, Saikia UN. Depressed plaques over back in a 35-year-old male. Indian J Dermatol Venereol Leprol 2010;76:305-306
A 35-year-old male presented to our outpatient department with depressed pigmented patches over his back since 1 year. These lesions were non-progressive and asymptomatic. He had no history of trauma, tick bite, infection or injection at these sites.
On examination, multiple well-defined round-to-oval, brownish plaques varying in size from 1 to 8 cm were present over the back [Figure - 1]. These were depressed below the level of adjacent skin. There was no induration, sclerosis, tenderness, or perilesional erythema. A punch biopsy specimen was taken from the margin of one of these lesions and was sent for histopathological examination.
Hematoxylin and eosin staining of a skin biopsy specimen revealed dense collagen bundles throughout the dermis. Epidermis was normal. Minimal scattered inflammatory infiltrate was seen. The thickness of dermis was reduced [Figure - 2] and [Figure - 3].
Laboratory studies including a complete blood count, liver and renal function tests, urinalysis, and electrolytes were within normal limits. The chest X-ray was normal. Serum antibody for Borrelia burgdorferi and anti-nuclear antibody were negative. Complete ophthalmologic, odontologic, and radiologic surveys revealed no abnormalities.
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