The Journal of the Korean Bone and Joint Tumor Society  2012;18(2):113-117

doi:10.5292/jkbjts.2012.18.2.113

Repeated Unplanned Excision of Malignant Fibrous Histiocytoma (Malignant Fibrous Histiocytoma Misdiagnosed as the Simple Cyst): A Case Report.

Jae Wan SOH 1 ; Woo Jong KIM ; Chang Hyun KIM ; Sei Won KWON ; Han Jo KIM

Affiliations

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Keywords

thigh; malignant fibrous histiocytoma; simple excision

Country

Republic of Korea

Language

Korean

Abstract

A 73-year-old male was admitted for unhealed wound. Eight months ago, the patient had been operated for excision of soft tissue mass on left distal thigh area in previous hospital and after 4 months from first operation, had been reoperated because of recurrence. The pathologic diagnosis of previous operation was simple cyst. In operating finding, the mass invaded the vastus lateralis fascia and had irregular margin and adhesion. We carried out simple excision with retaining 5 cm of free margin from the mass. The pathologic diagnosis of our hospital was malignant fibrous histiocytoma, and then the patient was performed radiation therapy. In 1 year follow-up, there was no significant finding either increasing mass size or metastasis. We misdiagnosed as simple cyst and then performed simple excision, however finally pathologic diagnosis confirmed as malignant fibrous histiocytoma. It is considered to operate a mass that preoperative proper evaluation and diagnosis are required.