Back issues No.4 - 1997 / Case Report  

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Granuloma Annulare Occurring in Herpes Zoster Scre-A Case Report-
Shu-Ching Hu, Chung-Ren Tseng, Li-Fang Wang
Dermatol Sinica 15: 280-284, 1997

One case of granuloma annulare in herpes zoster scar, was first described by Guill and Goette in 1978. Here, we report a similar case. A 61-year-old man suffered from herpes zoster over the right lower back 5 months ago. About one month after vesicular lesions resolved, many erythematous papules appeared at the site of the scar relating to herpes zoster with itching and painful sensation. Microscopically, there are necrobiosis with the accumulation of lymphocytes, histiocytes, and fibroblasts in a palisading fashion. Giant cells and nuclear dusts were also seen in the palisading granuloma. Alcian blue stain was mildly positive. The clinical pictre and histopathological feature suggest that this is a case of granuloma annulare in herpes zoster scar. True etiology is unknown. Treatment methods include topical or intralesional steroid.

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