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Unusual Malignant Solid Neoplasms of the Kidney: Cross-Sectional Imaging Findings.

Karaosmano─člu AD, Onur MR, Shirkhoda A, Ozmen M, Hahn PF - Korean J Radiol (2015)

Bottom Line: Malignant kidney neoplasms are the most frequently encountered solid kidney masses.Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component.In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.

ABSTRACT
Malignant kidney neoplasms are the most frequently encountered solid kidney masses. Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component. In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma.

No MeSH data available.


Related in: MedlinePlus

Primitive neuroectodermal tumor of kidney.Axial (A) and coronal (B) post-contrast computed tomography images demonstrate large masses (arrows) arising from left kidney. Kidney parenchyma is almost completely replaced by mass. Central hypodense area (arrowheads) represents necrosis.
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Figure 1: Primitive neuroectodermal tumor of kidney.Axial (A) and coronal (B) post-contrast computed tomography images demonstrate large masses (arrows) arising from left kidney. Kidney parenchyma is almost completely replaced by mass. Central hypodense area (arrowheads) represents necrosis.

Mentions: A PNET is a malignant small round cell tumor characterized by aggressive biological behavior with frequent recurrence and metastatic potential (1). These tumors are most frequently encountered in adolescents and young adults. The imaging features of a PNET are indistinguishable from RCC. PNET of the kidney is mostly reported as a large mass with near-total replacement of the renal parenchyma (Fig. 1) (2). These renal lesions appear as a heterogeneous mass on CT. MRI reveals a low signal-intensity solid mass with lobulated contours on T1-weighted images and heterogeneous signal intensity on T2-weighted images. PNET of the kidney may extend to the renal veins and inferior vena cava (3).


Unusual Malignant Solid Neoplasms of the Kidney: Cross-Sectional Imaging Findings.

Karaosmano─člu AD, Onur MR, Shirkhoda A, Ozmen M, Hahn PF - Korean J Radiol (2015)

Primitive neuroectodermal tumor of kidney.Axial (A) and coronal (B) post-contrast computed tomography images demonstrate large masses (arrows) arising from left kidney. Kidney parenchyma is almost completely replaced by mass. Central hypodense area (arrowheads) represents necrosis.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4499550&req=5

Figure 1: Primitive neuroectodermal tumor of kidney.Axial (A) and coronal (B) post-contrast computed tomography images demonstrate large masses (arrows) arising from left kidney. Kidney parenchyma is almost completely replaced by mass. Central hypodense area (arrowheads) represents necrosis.
Mentions: A PNET is a malignant small round cell tumor characterized by aggressive biological behavior with frequent recurrence and metastatic potential (1). These tumors are most frequently encountered in adolescents and young adults. The imaging features of a PNET are indistinguishable from RCC. PNET of the kidney is mostly reported as a large mass with near-total replacement of the renal parenchyma (Fig. 1) (2). These renal lesions appear as a heterogeneous mass on CT. MRI reveals a low signal-intensity solid mass with lobulated contours on T1-weighted images and heterogeneous signal intensity on T2-weighted images. PNET of the kidney may extend to the renal veins and inferior vena cava (3).

Bottom Line: Malignant kidney neoplasms are the most frequently encountered solid kidney masses.Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component.In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.

ABSTRACT
Malignant kidney neoplasms are the most frequently encountered solid kidney masses. Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component. In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma.

No MeSH data available.


Related in: MedlinePlus