Patch Type Granuloma Annulare Imitating Cutaneous T-Cell Lymphoma

Granuloma annulare (GA) is a benign inflammatory skin disease with distinct clinical and histopathological findings. Patch type GA is described with erythematous patches beyond the classical clinical appearance and an interstitial pattern is observed without histopathologically granulomas with disseminated histiocytes among collagen bundles and vessels. Here we report 46 year old woman diagnosed as patch type GA after a punch biopsy performed from the annular bordered patches in belly area, which is a classical area for mycosis fungoides (MF) evolution, and lesions increasingly spreading out within a 2 year period.\u