Lipoblastoma-like tumor is a very rare mesenchymal tumor believed to be restricted to female patients and only recently reported in the spermatic cord of a male patient. We describe herein an additional case of lipoblastoma-like tumor occurring in the spermatic cord, describing its histopathological, immunohistochemical, and molecular features.
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A lipomatous tumour of the paratesticular region: fibrosarcoma-like lipomatous neoplasm or lipoblastoma-like tumour?
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Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address:
Lipoblastoma-like tumor (LLT) is a rare adipocytic neoplasm with a predilection for the vulva. Since 2002, <30 cases have been reported, characterizing it as an indolent tumor that may sometimes recur locally. Diagnosis can be challenging due to its rarity and morphologic overlap with other adipocytic tumors.
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Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, Florida. Electronic address:
Lipoblastoma-like tumor (LLT) is a benign soft tissue tumor demonstrating mixed morphologic features of lipoblastoma, myxoid liposarcoma, and spindle cell lipoma but lacking genetic alterations associated with those tumors. LLT was originally thought to be specific to the vulva but has since been reported in the paratesticular region. The morphologic features of LLT overlap with those of "fibrosarcoma-like lipomatous neoplasm" (FLLN), a rare, indolent adipocytic neoplasm considered by some to form part of the spectrum of atypical spindle cell and pleomorphic lipomatous tumor.
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