Ultrasonographic findings and diagnosis of omental dedifferentiated liposarcoma: a case report

Takao Miwa; Kentaro Otsuji; Masashi Aiba; Takahiro Kochi; Katsuhisa Toda; Noriaki Nakamura; Naoki Katsumura; Tatsuhiko Miyazaki; Masahito Shimizu

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Ultrasonographic findings and diagnosis of omental dedifferentiated liposarcoma: a case report

VernacularTitle:Ultrasonographic findings and diagnosis of omental dedifferentiated liposarcoma: a case report
Author: Takao MIWA ¹ ; Kentaro OTSUJI ¹ ; Masashi AIBA ¹ ; Takahiro KOCHI ¹ ; Katsuhisa TODA ¹ ; Noriaki NAKAMURA ¹ ; Naoki KATSUMURA ¹ ; Tatsuhiko MIYAZAKI ² ; Masahito SHIMIZU ³
Author Information

1. Department of Gastroenterology, Chuno Kousei Hospital, Japan
2. Department of Pathology, Gifu University Hospital, Japan
3. Department of Gastroenterology, Gifu University Graduate School of Medicine, Japan
Keywords: case report; dedifferentiated; liposarcoma; omental; ultrasonography
From:Journal of Rural Medicine 2020;15(2):68-72
CountryJapan
Language:English
Abstract: Liposarcoma is one of the most common types of soft tissue sarcomas and can develop at any site, although omental liposarcoma is extremely rare. Omental liposarcoma has a poor prognosis because the diagnosis is difficult, until it presents as a large tumor causing severe noticeable clinical symptoms. A 51-year-old male with lower abdominal pain was referred to our clinic. Abdominal ultrasonography revealed an ill-defined, solid, heterogeneous, and hypoechoic tumor deep in the lower abdomen. Generally, liposarcomas are hyperechoic, though 20% of liposarcomas present as hypoechoic tumors. This variation might occur depending on the pathological classification. We should consider the possibility of a dedifferentiated component if ultrasonography reveals typical features of soft tissue sarcoma with hypoechoic lesion.