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Subcutaneous panniculitis-like T-cell lymphoma: an elusive case presenting as lipomembranous panniculitis and a review of 72 cases in the literature.

We present a remarkable case of subcutaneous panniculitic T-cell lymphoma (SPTL) that eluded diagnosis for 14 years and illustrates the importance of continued follow-up with repeat biopsy when SPTL is suspected. This case is unusual in that multiple biopsies demonstrated either a nonspecific panniculitis or lipomembranous panniculitis with calcified lipomembranes. A clinicopathologic review of 72 cases of SPTL from the English language literature is also presented, and approaches to diagnosis and treatment are reviewed.