Multidetector Computed Tomography Features in Differentiating Exophytic Renal Angiomyolipoma from Retroperitoneal Liposarcoma: A Strobe-Compliant Observational Study.

Multidetector Computed Tomography Features in Differentiating Exophytic Renal Angiomyolipoma from Retroperitoneal Liposarcoma

This study aims to evaluate the multidetector computed tomography (CT) imaging features in differentiating exophytic renal angiomyolipoma (AML) from retroperitoneal liposarcoma. We retrospectively enrolled 42 patients with confirmed exophytic renal AML (31 patients) or retroperitoneal liposarcoma (11 patients) during 8 years period to assess: renal parenchymal defect at site of tumor contact, s...

Exophytic angiomyolipoma vs retroperitoneal liposarcoma: CT features analysis

Retroperitoneal extrarenal angiomyolipoma at the surgical bed 8 years after a renal angiomyolipoma nephrectomy: A case report and review of literature

Retroperitoneal extrarenal angiomyolipoma (RERAML) are rare and close mimickers of retroperitoneal liposarcoma on both imaging and histopathology. However, imaging findings including heterogeneity, hyperdensity on unenhanced computed tomography, intralesional hemorrhage, absence of calcifications, low signal intensity on T2-weighted magnetic resonance imaging, and dilated intratumoral vessels c...

Images in Nephrology Giant bilateral perinephric tumour and overt proteinuria

A 63-year-old man with type 2 diabetes mellitus and hypertension presented with increasing abdominal girth and foamy urine for the previous 2 years. Impaired renal function (BUN 33mg/dl, serum creatinine 2.3mg/dl), hypoalbuminaemia (2.3 g/dl), overt proteinuria (11.2 g/day), microscopic haematuria (RBC 21-35/HPF) and bilateral perinephric tumour were noted at a local hospital. Non-contrast enha...

[Perinephric liposarcoma mimicking cystic renal tumor].

Liposarcoma is one of the most common primary retroperitoneal neoplasms, and the perinephric region is a frequent location for them. Liposarcomas show a variety of radiographic features in terms of histological types and tumor sizes, so the specific diagnosis of liposarcoma is often difficult. We present a unique case of perinephric dedifferentiated liposarcoma mimicking cystic renal tumor. A 7...