ABDOMINAL WALL - Liposarcoma

The specimen is a very large tumour; the outer surface is nodular in outline and apparently largely contained within a thin membrane. The cut surface shows one area of recognisable fat but the rest appears rather myxomatous.
This woman first presented at the age of 38 in 1953 with a mass in the left lower quadrant of the abdomen which was shown to be arising from the anterior abdominal wall behind the peritoneum. The histology was that of a simple lipoma. The tumour recurred in 1957; microscopy showed a low-grade lipo-myxo-sarcoma. There were further recurrences in 1966, 1969, 1976, 1977, 1978 and 1981. On the last occasion the left colon was removed with the tumour but although adherent to the lesion, was not infiltrated. In April 1983 the tumour recurred and extended from the upper pole of the left kidney into the true pelvis. It was removed. In September 1983 exploration of her abdomen showed three liposarcomatous masses in the abdomen, the largest being some 6 inches in diameter.