Liposarcoma of the tongue: clinico-pathologic correlations of a possible underdiagnosed entity.
Liposarcoma (LS), one of the most common malignant tumors, is considered as a rarity in the oral cavity, the tongue being the most frequent site for its occurrence. The purpose of the present study was to review and analyze the clinico-pathologic correlations of 32 cases of LS of the tongue, including four new cases from the files of our department. A total of 32 cases of LS of the tongue were collected, 29 from a MEDLINE search of the English language literature (1966-2004). Since the histopathologic features of one of the four new cases have been presented previously, this case was counted only once. LS of the tongue is a tumor of adult and old age, with a mean age of approximately 62 years and a peak incidence in the seventh and eighth decades. Clinically, it is a long-standing tumor that commonly presents as a solitary nodular mass, but can also present as a multi-nodular lesion. The most common histopathologic type is that of atypical lipomatous tumor (ALT)/well-differentiated LS (75%). LS can be easily misdiagnosed with both benign and malignant lipomatous and non-lipomatous tumors. LS of the tongue was commonly treated by local excision, however, there were cases of (multiple) recurrences and dedifferentiation. When a lipomatous lesion is encountered in the oral cavity, and especially in the tongue, LS should certainly be among the lesions that top the list of differential diagnosis. The follow-up must be on a long-term basis since this tumor can recur years after initial surgical treatment and can also undergo dedifferentiation.
Allon
Irit
I
Department of Oral Pathology and Oral Medicine, The Maurice and Gabriella Goldschleger School of Dental Medicine, Tel Aviv University, 69978 Tel Aviv, Israel.
Vered
Marilena
M
Dayan
Dan
D
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008080:Liposarcoma / Q000473:pathology* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D014062:Tongue Neoplasms / Q000473:pathology* / Q000628:therapy