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The Korean Journal of Pathology 2005;39(3): 211-213.
Plexiform Fibrohistiocytic Tumor of the Neck: A Case Report.
Hyang Mi Shin
Department of Pathology, Cheongju St. Mary's Hospital, 589-5 Jujung-dong, Sangdang-gu, Cheongju, Korea. fecalith@empal.com
Plexiform fibrohistiocytic tumor (PFT) is a rare, low-grade soft tissue tumor that occurrs primarily in children and young adults. The most common location of PFT is the upper extremity, and there are very few reports of PFT in the neck. We report here on a case of PFT presenting as a painless subcutaneous nodule in the neck of a 46-year-old woman. Histologically, this subcutaneous tumor was composed of a plexiform proliferation of histiocyte-like cells and fibroblast-like cells along with a few multinucleated osteoclast-like giant cells. Immunohistochemically, the tumor cells were positive for vimentin, CD68 and smooth muscle actin (SMA).
Key Words: Plexiform fibrohistiocytic tumor; Neck