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World J Surg Oncol. 2005 Feb 24;3(1):14.

A giant subcutaneous leiomyosarcoma arising in the inguinal region.

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  • 1Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata City, 951-8510 Japan.



Subcutaneous leiomyosarcoma is a rare condition that accounts for 1% to 2% of all superficial soft tissue malignancies. Approximately 10% of cases arise in the trunk, although the extremities are the most commonly affected.


We report herein the case of a 31-year-old man with a subcutaneous leiomyosarcoma, measuring 124 x 105 mm, arising in the left inguinal region. A wide local excision (with a resection margin >/= 20 mm) was performed. Histological examination of the resected specimen revealed a leiomyosarcoma with high cellularity and two mitoses per 10 high-power fields. The patient remains well with no evidence of disease 5 years and 8 months after the operation.


This is the first reported case of subcutaneous leiomyosarcoma arising in the inguinal region and also one of the largest tumors reported. The experience of this case and a review of the English-language literature (PubMed, National Library of Medicine, Bethesda, MD, USA) suggest that a resection margin of >/= 10 mm is recommended when excising this rare tumor.

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