Diagnosis: Lymphoma CD30+ anaplastic large cell
Description: Nodules and ulcers on forearm
Clinical Features: Nodule
Pathology/Site Features: Tumour cells in dermis
Sex: M
Age: 55
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Differential DiagnosisHistory: This 55-year-old male presented with multiple asymptomatic nodules mainly on the extremities some of which are ulcerated of 6 months duration. Biopsy of one of the lesions reported diffuse infiltration of large atypical lymphoid cells with pleomorphic nuclei, eosinophilic cytoplasm & frequent mitotic figures. The infiltration goes deeply replacing the subcutaneous tissue. Immunohistochemical studies showed the cells to be positive for LCA, CD3 and CD30 but negative for CD20.