Abstract

A sixty‐nine‐year‐old male patient, without a significant prior medical history, presented with a rapidly enlarging, 2 cm non‐tender nodule on the right lower eyelid. The lesion persisted in spite of an incision and drainage. Following an excision, the histology revealed a diffuse infiltrate of atypical mononuclear cells within the dermis. The cells were large, monomorphic, with irregular to convoluted nuclei, prominent nucleoli, amphophilic cytoplasm. They were very mitotically active. Immunohistochemical stains for CD45, CD3, and CD30 were strongly positive. Pancytokeratin, CD20, and ALK (Anaplastic Lymphoma Kinase fusion protein) were negative. The histopathologic diagnosis was CD30 (Ki‐1) positive anaplastic large cell lymphoma. The margin was positive for involvement by lymphoma. The lesion was re‐excised with no evidence of residual involvement by lymphoma. A primary cutaneous anaplastic large cell lymphoma was favored over systemic involvement based on the clinical presentation of a single eyelid nodule and ALK negativity. He was referred to a hematology‐oncologist for further management. Anaplastic large cell lymphoma is a distinctive type of malignant lymphoma with a relatively favorable prognosis. It frequently involves the skin, however, to the best of our knowledge, presentation of this lymphoma type as a single lesion on the eyelid is extremely rare.

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