Giant retroperitoneal lipoma: a case report

Abstract

-Background -Retroperitoneal lipoma is an extremely rare neoplasm. Aims -The authors report a case of giant retroperitoneal lipoma in a 32-year-old white female, with a history of pain and an abdominal mass over a 2-year period. Total abdominal ultrasonography and barium enema showed a large mass located in the retroperitoneal space behind the ascending colon. Laparotomy showed a large encapsulated tumor measuring 20 x 13 x 10 cm and weighing 3.400 g. The histological study revealed a benign neoplasm of fatty cells. Conclusion -The patient remains well 17 years after surgery, without recurrentce of the disease.

Large intraperitoneal lipoma in pregnancy

“…Large intraperitoneal lipomas are rare and may originate from retroperitoneal adipose muscle, connective, lymphatic, nerve tissues or urogenital tract 1. The most common peritoneal lipomas occur through the intestinal tract commonly the colon, small bowel, stomach, oesophagus and pharynx 2.…”

Staged management of giant bilateral perinephric adipocytic neoplasms

“…Retroperitoneal lipomas are an extremely rare finding and only diagnosed after thoroughly excluding liposarcoma on morphologic and molecular genetic grounds. There have been at least 40 cases in the English literature; some presented with giant abdominal tumors [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. The majority of the reports describe typical lipomas with pure adipocytes on histology.…”

Practical Issues for Retroperitoneal Sarcoma

“…Eighteen cases of retroperitoneal lipoma have been described in the literature since 1980. [139][140][141][142][143][144][145][146][147][148][149][150][151][152][153][154][155] Retroperitoneal lipoma may not be distinguishable from well-differentiated liposarcoma on imaging and findings on biopsies are often inconclusive. Molecular testing is recommended to support a diagnosis of retroperitoneal lipoma confirming the absence of MDM2 amplification; however, a negative result does not exclude the possibility of well-differentiated liposarcoma.…”