The differential imaging features of fat-containing tumors in the peritoneal cavity and retroperitoneum: the radiologic-pathologic correlation.
There are a variety of fat-containing lesions that can arise in the intraperitoneal cavity and retroperitoneal space. Some of these fat-containing lesions, such as liposarcoma and retroperitoneal teratoma, have to be resected, although resection can be deferred for others, such as adrenal adenoma, myelolipoma, angiomyolipoma, ovarian teratoma, and lipoma, until the lesions become large or symptomatic. The third group tumors (i.e., mesenteric panniculitis and pseudolipoma of Glisson's capsule) require medical treatment or no treatment at all. Identifying factors such as whether the fat is macroscopic or microscopic within the lesion, the origin of the lesions, and the presence of combined calcification is important for narrowing the differential diagnosis. The development and wide-spread use of modern imaging modalities make identification of these factors easier so narrowing the differential diagnosis is possible. At the same time, lesions that do not require immediate treatment are being incidentally found at an increasing rate with these same imaging techniques. Thus, the questions about the treatment methods have become increasingly important. Classifying lesions in terms of the necessity of performing surgical treatment can provide important information to clinicians, and this is the one of a radiologist's key responsibilities.
Shin
Na-young
NY
Department of Radiology, Severance Hospital, Yonsei University School of Medicine, Seoul, Korea.
Kim
Myeong-Jin
MJ
Chung
Jae-Joon
JJ
Chung
Yong-Eun
YE
Choi
Jin-Young
JY
Park
Young-Nyun
YN
D050153:Abdominal Fat / Q000000981:diagnostic imaging / Q000473:pathology; D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D018205:Neoplasms, Adipose Tissue / Q000000981:diagnostic imaging* / Q000473:pathology*; D010529:Peritoneal Cavity / Q000000981:diagnostic imaging / Q000473:pathology; D010532:Peritoneal Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D010534:Peritoneal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging / Q000473:pathology; D036542:Tomography, Spiral Computed / Q000379:methods; D055815:Young Adult
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