Hypopigmented MF presents as hypopigmented asymptomatic patches without any erythema or infiltration in its early stage and mimics Hansen's disease. Skin biopsy clinches the diagnosis.

Trichoscopy is the term coined for dermoscopic imaging of the scalp and hair. This novel diagnostic technique, both simple and non-invasive, can be used as a handy bed side tool for diagnosing common hair and scalp disorders. Trichoscopic observations can be broadly grouped as hair signs, vascular patterns, pigment patterns and interfollicular patterns. In this article, we have briefly described the trichoscopic findings in the common categories of cicatricial and non-cicatricial alopecias such as androgenetic alopecia, alopecia areata, telogen effluvium, tinea capitis, trichotillomania, lichen planopilaris, discoid lupus erythematosus and hair shaft disorders. Besides diagnosing alopecia, it has the potential for obviating unnecessary biopsies and when a biopsy is still needed it is helpful in choosing an ideal biopsy site. Moreover, trichoscopy is a valuable tool for evaluating the treatment response photographically at each follow-up. The last statement here is deleted as asked.

No abstract

Multinucleate cell angiohistiocytoma (MCAH) represents a rare benign skin lesion characterized by multiple papules that are usually found on the distal extremities or face of middle-aged women. We report on a 60-year-old male with a history of monoclonal gammopathy and severe rheumatoid arthritis who had several asymptomatic red-to-livid papules grouped on the right side of his trunk. The lesions had been present for a few years and were gradually enlarging. Biopsies from three lesions showed a spectrum of changes consisting of a proliferation of small venules together with thickened collagen bundles and increased numbers of interstitial cells including bizarre, multinucleated giant cells. Immunohistochemically, the multinucleated cells were positive for vimentin and lysozyme while the interstitial cells expressed CD68, factor XIIIa and lysozyme. Interestingly, strikingly enlarged dermal nerves were seen in all the three biopsies and two of the biopsies showed an accompanying infiltrate of lymphocytes and plasma cells.