Suprarenal retroperitoneal liposarcoma with intracaval tumor thrombus: an imaging mimic of adrenocortical carcinoma (original) (raw)

An 18-kg giant variant of a well-differentiated retroperitoneal liposarcoma of the kidney

Scripta Scientifica Medica

Well-differentiated liposarcoma (WDLS), the most common type of liposarcoma is a slow-growing, painless tumor usually located in the retroperitoneum or the limbs. In this abstract we present a case of a 71-year-old male who presented in our clinic with a diagnosis of a giant WDLS. We performed a CT scan from which we found a giant abdominopelvic mass originating from the right kidney. This mass was pushing almost all organs and structures from the right abdominal cavity across the midline to the left side, which includes the IVC, aorta and the right ureter, all bowels were also pushed and were above this mass. A large 18-kg fibro-fatty mass was extirpated. The histopathological findings reported low-grade differentiated liposarcoma. The CT scan, which was done 3 months after the operation, determined that the patient was free from recurrence.

Renal Angiomyolipoma Mimicking a Well-Differentiated Retroperitoneal Liposarcoma

Case Reports in Urology

A 37-year-old Burmese woman presented with an incidentally found retroperitoneal fat-containing tumor. The tumor was 9 cm in the longest diameter, surrounding the right kidney, and composed of homogenous adipose tissue with thickened septum-like structures and spotty nonadipose structures, which were enhanced on contrast-enhanced computed tomography and magnetic resonance imaging. The tumor did not show either a beak sign or synchronous angiomyolipoma-like lesion in the kidneys. The tumor had irregular septa, thin blood vessels, and spotty small soft-tissue nodules. The tumor did not contain any heterogeneously enhanced solid lesions suspicious for dedifferentiated liposarcomas. Based on these imaging findings, a clinical diagnosis of a well-differentiated liposarcoma was made. Under the consensus of a multidisciplinary cancer board, she was recommended to undergo core-needle biopsy to confirm the clinical diagnosis. However, she declined to undergo biopsy for financial reasons. She...

Giant mixed-type perinephric liposarcoma

International Urology and Nephrology, 2004

Retroperitoneal fatty tumours are uncommon occurrences in current urologic practice, the differentials being lipomas, liposarcomas and extra-renal angiomyolipomas (AML). We report an unusual case of a 48-year-old Chinese female who presented with a 6.2 kg giant mixed-type liposarcoma in the left perinephric space, invading into the renal cortex and parenchyma. Extirpative surgery with left radical nephrectomy was performed, and histology confirmed liposarcoma with both myxoid and well-differentiated elements. The patient remains well and disease-free at 6-month follow-up. We review the literature on the diagnosis and management of these perinephric lipomatous lesions. We also discuss the diagnostic dilemma in differentiating such malignancies from benign angiomyolipomas in the perinephric area on conventional radiological imaging, and its direct implications with respect to extent of surgery and renal preservation.

Case 10789 A large calcified dedifferentiated liposarcoma of the retroperitoneum

Clinical History A 70-year-old man was admitted to our department with a 4-month history of intermittent abdominal discomfort. Physical examination revealed a palpable mass in the left side of abdomen. Imaging Findings Abdominal computed tomography (CT) images show a large calcified mass (19x16 cm in size) in the left retroperitoneal space, containing both solid and fatty components, involving the perirenal adipose tissue and the left kidney [Fig.1]. The mass causes anterior displacement of the left kidney and descending colon, right displacement of the jejunum and inferior and superior mesenteric vessels, showing no evidence of infiltration of these structures [Fig. 2-3]. No enlargement of loco-regional lymph nodes was demonstrated. Surgical excision was performed and the post-operative histopathological result was a calcified dedifferentiated liposarcoma (DDLPS) arising from well-differentiated liposarcoma (WDLPS).

Giant Retroperitoneal Liposarcoma with Multi-Organ Involvement

zet Retroperitoneal liposarkom ender görülen, kötü prognozlu bir tümördür. Spesifik bir bulgu vermemesi nedeniyle kitleler büyük boyutlara ulaşana kadar tanı gecike-bilmektedir. Cerrahi tedavi başlıca tedavi seçeneğidir. Dev liposarkomlu hastalar da çok sayıda organ rezeksiyonu gerekebilir ve kitlenin tam çıkarılamaması lokal nükslerin sebebidir. Medikal tedavi ise tartışmalıdır. Bu yazıda 2 yıl önce retrope-ritoneal kitle saptanarak ameliyat önerilen, ancak hasta tarafından ameliyat kabul edilmediği için dev boyutlara ulaşarak sol böbrek, sol adrenal bez ve sol kolon me-zosunu tutan liposarkom olgusu sunuldu. Tümörün dev boyutlarda olması ve birçok organı tutmasının rezeksiyon açısından kontrendikasyon oluşturmadığını ve rezek-siyonun hastanın yaşam kalitesini arttırdığını göstermek için bu olguyu tartıştık. Abstract Retroperitoneal liposarcomas are very rare tumors with poor prognosis. The diagnosis can be delayed since there are no specific symptoms and findings. Surgical resecti...

Primary retroperitoneal liposarcoma

European Journal of Obstetrics & Gynecology and Reproductive Biology, 2003

A retroperitoneal liposarcoma that marginally involved the right kidney and ovary was presented clinically as an adnexial mass in a 61-yearold woman. At laparatomy a large retroperitoneal mass in addition to the right kidney and ovary was removed totally. A well-differentiated retroperitoneal liposarcoma was detected in histological speciment. Adjuvant irradiation was given. The 5-year survival rate of retroperitoneal liposarcoma is low. Curative resection remains the main treatment for primary and recurrent liposarcomas. #