Limits...
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

Renal leiomyosarcoma.A. Axial post-contrast computed tomography image demonstrates hypoenhancing solid mass with well-defined lobulated margins (arrow). Axial (B) and coronal (C) T2-weighted magnetic resonance image (MRI) reveals low signal intense left renal mass (arrows). D. Renal mass (arrow) appears with low enhancement on contrast-enhanced fat saturated T1-weighted MRI.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4499550&req=5

Figure 4: Renal leiomyosarcoma.A. Axial post-contrast computed tomography image demonstrates hypoenhancing solid mass with well-defined lobulated margins (arrow). Axial (B) and coronal (C) T2-weighted magnetic resonance image (MRI) reveals low signal intense left renal mass (arrows). D. Renal mass (arrow) appears with low enhancement on contrast-enhanced fat saturated T1-weighted MRI.

Mentions: Renal LMS accounts for only 0.1% of all invasive renal tumors and 50-60% of all cases of renal sarcoma (12). These tumors most frequently arise from the renal capsule, smooth muscle fibers of the renal pelvis, sphincter ring around the renal papilla, and internal blood vessels (13). Spontaneous rupture of the kidney has been reported in patients with renal LMS (14). Renal LMSs appear as expansile, heterogeneously-enhancing, and well-circumscribed solid masses that usually project exophytically from the kidney (131516). Not surprisingly, the fibrous stroma of the tumor accounts for the T1- and T2-hypointensity and demonstrates delayed enhancement after intravenous injection of contrast agent (Fig. 4) (13). Large renal LMS may present as multilocular cystic masses with peripheral enhancement. A histopathological diagnosis is necessary, as these tumors cannot be distinguished from RCC and other renal malignancies.


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)

Renal leiomyosarcoma.A. Axial post-contrast computed tomography image demonstrates hypoenhancing solid mass with well-defined lobulated margins (arrow). Axial (B) and coronal (C) T2-weighted magnetic resonance image (MRI) reveals low signal intense left renal mass (arrows). D. Renal mass (arrow) appears with low enhancement on contrast-enhanced fat saturated T1-weighted MRI.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 4: Renal leiomyosarcoma.A. Axial post-contrast computed tomography image demonstrates hypoenhancing solid mass with well-defined lobulated margins (arrow). Axial (B) and coronal (C) T2-weighted magnetic resonance image (MRI) reveals low signal intense left renal mass (arrows). D. Renal mass (arrow) appears with low enhancement on contrast-enhanced fat saturated T1-weighted MRI.
Mentions: Renal LMS accounts for only 0.1% of all invasive renal tumors and 50-60% of all cases of renal sarcoma (12). These tumors most frequently arise from the renal capsule, smooth muscle fibers of the renal pelvis, sphincter ring around the renal papilla, and internal blood vessels (13). Spontaneous rupture of the kidney has been reported in patients with renal LMS (14). Renal LMSs appear as expansile, heterogeneously-enhancing, and well-circumscribed solid masses that usually project exophytically from the kidney (131516). Not surprisingly, the fibrous stroma of the tumor accounts for the T1- and T2-hypointensity and demonstrates delayed enhancement after intravenous injection of contrast agent (Fig. 4) (13). Large renal LMS may present as multilocular cystic masses with peripheral enhancement. A histopathological diagnosis is necessary, as these tumors cannot be distinguished from RCC and other renal malignancies.

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