VIEWS: 30 PAGES: 5 CATEGORY: Medicine POSTED ON: 6/11/2010
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DOI: 10.3315/jdcr.2009.1030 30 Mycosis fungoides and CD30+ cutaneous T-cell lymphoma simulating pyoderma gangrenosum in a patient with ulcerative colitis Fares Salameh, Aviv Barzilai, Sharon Baum, Henri Trau Department of Dermatology, Chaim Sheba Medical Center, Tel Hashomer, The Sackler School of Medicine, Tel Aviv University, Israel Corresponding author: Abstract Fares Salameh M.D. Background: Pyoderma gangrenosum is estimated to occur in 5% to 12% of Department of Dermatology ulcerative colitis patients. Primary CD30+ cutaneous large cell lymphoma is the second most common cutaneous lymphoma. It may coexists with mycosis fungo- The Chaim Sheba Medical Center, ides. Tel Hashomer 52621 Israel Main observations: We report a 38-years-old female patient with 12 year histo- E-mail: email@example.com ry of ulcerative colitis, treated previously with 5-aminosalicylic acid and systemic corticosteroids. The disease has been in remission for the past 1.5 years, with no maintenance treatment. The patient then developed a rapidly progressing ulcera- Key words: ted lesion clinically simulating pyoderma gangrenosum. Physical examination re- cutaneous T-cell lymphoma, in- vealed also a small number of hairless hypopigmented patches on the upper and flammatory bowel disease, myco- lower limbs which she claimed to have appeared 4 years ago. Surprisingly a histo- sis fungoides, ulcer, ulcerative coli- logical evaluation of the ulcer revealed a CD30+ primary cutaneous large cell tis, pyoderma gangrenosum lymphoma, while histology of hypopigmented lesions revealed mycosis fungoides, patch stage. T-cell receptor gene rearrangement from the two lesions didn't reveal the same T Cell clonalitiy and the patients lymphoma was stable. Conclusion: Our case presents the rare coexistence of primary mycosis fungo- ides and primary CD30+ cutaneous large cell lymphoma, rather than the CD30+ cutaneous large cell lymphoma developing from mycosis fungoides. This case also presents the development of a pyoderma gangrenosum-like lesion of CD30+ cu- taneous large cell lymphoma in a patient with ulcerative colitis. An observation that emphasizes the need for a high index of suspicion in cases diagnosed as py- oderma gangrenosum based solely on clinical appearance. Introduction PCLCL was reported to coexist with MF as an indepen- dent lymphoproliferative disorder or develop secondarily Primary cutaneous T-cell lymphoma (CTCL) represents from MF.4,5,6,7,8 a heterogeneous group of neoplasms derived from skin- We describe a patient with MF patch stage coexisting homing T cells. Apart from mycosis fungoides (MF), pri- with CD30+ PCLCL presenting as a pyoderma gangreno- mary CD30+ CTCL is the most common group, accoun- sum (PG) like lesion. ting for approximately 25% of all CTCLs.1 The spectrum of primary CD30+ CTCLs includes lymphomatoid papulosis (LyP), primary cutaneous large cell lymphoma (PCLCL), Case report and borderline CD30+ lesions.2 These three types may coexist in the same patient with overlapping clinical and A 38-years-old woman with a 12 years history of ulcera- histopathological features and may be associated with tive colitis was admitted to our department for an investi- other types of lymphoproliferative disorders including gation of a rapidly progressing ulcerated lesion on her Hodgkin’s lymphoma and mycosis fungoides (MF).3 CD30+ right thigh which appeared 9 days previously. Ulcerative J Dermatol Case Rep 2009 2, pp 30-33
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