An Unusual Presentation of Cutaneous T Cell Lymphoma

Cutaneous lymphomas are the second most frequent extranodal lymphomas. A 37 aged male patient who has a lesion on his posterior thigh was admitted to our clinic with a preliminary diagnosis of malignant melanoma. A hemorrhagic tumor mass of 20 × 15 cm in size, elevated from the skin, and ulcerated in the middle of it was observed on the posterolateral side of right thigh of the patient. An incisional biopsy was performed from the current lesion of the patient by another clinic, and malignant melanoma was diagnosed. However, because additional immunohistochemical staining could not be performed, the patient was accepted by us and the patient was initially considered to have biopsy taken and have it re-evaluated and reassessed. Incisional biopsy was performed again by our clinic and the lesion was reported as a result of cutaneous anaplastic large cell lymphoma. Cutaneous T cell lymphoma can be difficult to diagnose.