PURPOSE: This study was designed to present the radiological imaging findings of a renal primitive neuroectodermal tumor (PNET). MATERIALS AND METHODS: The study included 10 patients with pathologically proven renal PNETs. We assessed the size, margin, internal architecture, enhancement pattern, vein thrombosis, and presence of a metastasis of the tumors on multidetector-row computed tomography and magnetic resonance imaging. RESULTS: The mean age of the patients was 31 years. Patients were predominantly male (males-females, 8:2). The mean diameter of a renal PNET was 12.7 cm. All masses were well defined with a lobulated contour. Necrosis and hemorrhage were detected in 9 cases, respectively. All of the masses showed weak heterogeneous enhancement with multiple irregular septumlike structures. Eight of the masses had renal vein thrombosis, and 4 masses had extension into inferior vena cava. A lymph node metastasis was detected in 3 patients. A lung metastasis was detected in 4 patients, and 2 of the patients also had a bone metastasis. CONCLUSIONS: A renal PNET usually appears as a weakly enhanced large mass with multiple septumlike structures, peripheral hemorrhage, venous thrombosis, and accompanied with a distant metastasis in a young adult.
PURPOSE: This study was designed to present the radiological imaging findings of a renal primitive neuroectodermal tumor (PNET). MATERIALS AND METHODS: The study included 10 patients with pathologically proven renal PNETs. We assessed the size, margin, internal architecture, enhancement pattern, vein thrombosis, and presence of a metastasis of the tumors on multidetector-row computed tomography and magnetic resonance imaging. RESULTS: The mean age of the patients was 31 years. Patients were predominantly male (males-females, 8:2). The mean diameter of a renal PNET was 12.7 cm. All masses were well defined with a lobulated contour. Necrosis and hemorrhage were detected in 9 cases, respectively. All of the masses showed weak heterogeneous enhancement with multiple irregular septumlike structures. Eight of the masses had renal vein thrombosis, and 4 masses had extension into inferior vena cava. A lymph node metastasis was detected in 3 patients. A lung metastasis was detected in 4 patients, and 2 of the patients also had a bone metastasis. CONCLUSIONS: A renal PNET usually appears as a weakly enhanced large mass with multiple septumlike structures, peripheral hemorrhage, venous thrombosis, and accompanied with a distant metastasis in a young adult.
Authors: Ali Devrim Karaosmanoğlu; Mehmet Ruhi Onur; Ali Shirkhoda; Mustafa Ozmen; Peter F Hahn Journal: Korean J Radiol Date: 2015-07-01 Impact factor: 3.500
Authors: Nidale Tarek; Rabih Said; Clark R Andersen; Tina S Suki; Jessica Foglesong; Cynthia E Herzog; Nizar M Tannir; Shreyaskumar Patel; Ravin Ratan; Joseph A Ludwig; Najat C Daw Journal: Cancers (Basel) Date: 2020-10-11 Impact factor: 6.639