A rare case of benign fibrous histiocytoma arising in the upper lip in a 76-year-old female is presented. A well-defined tumor measuring 1 cm existed in the submucosal area of the right side of the upper lip. With the patient under local anesthesia, the tumor was excised. Microscopically, the excised tumor was diagnosed as a benign fibrous histiocytoma. There has been no evidence of tumor recurrence after the operation.

Two cases of intramuscular lipoma occurring in the cheek of a 39-year-old and of a 55-year-old Japanese males are presented. These were excised by the intraoral approach. Histopathologically, these lesions were composed of the adipose cell-like tumor cells infiltrating in the striated muscles. There has been no evidence of tumor recurrence after operation.

Two cases of intramuscular lipoma occurring in the cheek of a 39-year-old and of a 55-year-old Japanese males are presented. These were excised by the intraoral approach. Histopathologically, these lesions were composed of the adipose cell-like tumor cells infiltrating in the striated muscles. There has been no evidence of tumor recurrence after operation.