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Renal arteriovenous malformation with inferior vena caval extension mimicking renal cell carcinoma.

Dangi AD, Kumar R, Kekre NS - Indian J Urol (2014)

Bottom Line: A young lady presented with complaints of right flank pain and a palpable mass.Histopathology revealed a benign arteriovenous malformation that had extended into the IVC.Arteriovenous malformation should therefore be kept in the list of differentials for a renal mass with IVC extension.

View Article: PubMed Central - PubMed

Affiliation: Department of Urology, Christian Medical College, Vellore, Tamil Nadu, India.

ABSTRACT
A young lady presented with complaints of right flank pain and a palpable mass. On contrast-enhanced tomography (CECT), a renal mass with extension into the inferior vena cava (IVC) - suggestive of renal cell carcinoma - was diagnosed and she underwent radical nephrectomy with en bloc excision of the IVC thrombus. Histopathology revealed a benign arteriovenous malformation that had extended into the IVC. Arteriovenous malformation should therefore be kept in the list of differentials for a renal mass with IVC extension.

No MeSH data available.


Related in: MedlinePlus

(a) Hematoxylin and eosin stain (X50): Renal tissue with variably angulated and dilated blood vessels, distributed in a copious hyaline fibrous matrix. The spindle cells in the stroma did not show any atypia or pleomorphism. (b) Human melanoma black 45 immunostaining (X200): Negative, rules out angiomyolipoma
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Figure 2: (a) Hematoxylin and eosin stain (X50): Renal tissue with variably angulated and dilated blood vessels, distributed in a copious hyaline fibrous matrix. The spindle cells in the stroma did not show any atypia or pleomorphism. (b) Human melanoma black 45 immunostaining (X200): Negative, rules out angiomyolipoma

Mentions: Gross examination revealed a tumor measuring 9 × 8 × 7 cm with a firm white surface on cut section, displacing the entire kidney and abutting the renal pelvis. A 2 cm fleshy mass with cut surface similar to the tumor was seen to extend out of the renal vein without infiltrating it (IVC thrombus). Light microscopy findings are described in Figure 2a. The stromal cells were negative for HMB45 [Figure 2b], SMA, CD34, Melan A, S-100 [Figure 3a], EMA [Figure 3b] and desmin on immunohistochemistry. Slides were reviewed by a second expert pathologist and the diagnosis of arteriovenous malformation of right kidney was confirmed.


Renal arteriovenous malformation with inferior vena caval extension mimicking renal cell carcinoma.

Dangi AD, Kumar R, Kekre NS - Indian J Urol (2014)

(a) Hematoxylin and eosin stain (X50): Renal tissue with variably angulated and dilated blood vessels, distributed in a copious hyaline fibrous matrix. The spindle cells in the stroma did not show any atypia or pleomorphism. (b) Human melanoma black 45 immunostaining (X200): Negative, rules out angiomyolipoma
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4120230&req=5

Figure 2: (a) Hematoxylin and eosin stain (X50): Renal tissue with variably angulated and dilated blood vessels, distributed in a copious hyaline fibrous matrix. The spindle cells in the stroma did not show any atypia or pleomorphism. (b) Human melanoma black 45 immunostaining (X200): Negative, rules out angiomyolipoma
Mentions: Gross examination revealed a tumor measuring 9 × 8 × 7 cm with a firm white surface on cut section, displacing the entire kidney and abutting the renal pelvis. A 2 cm fleshy mass with cut surface similar to the tumor was seen to extend out of the renal vein without infiltrating it (IVC thrombus). Light microscopy findings are described in Figure 2a. The stromal cells were negative for HMB45 [Figure 2b], SMA, CD34, Melan A, S-100 [Figure 3a], EMA [Figure 3b] and desmin on immunohistochemistry. Slides were reviewed by a second expert pathologist and the diagnosis of arteriovenous malformation of right kidney was confirmed.

Bottom Line: A young lady presented with complaints of right flank pain and a palpable mass.Histopathology revealed a benign arteriovenous malformation that had extended into the IVC.Arteriovenous malformation should therefore be kept in the list of differentials for a renal mass with IVC extension.

View Article: PubMed Central - PubMed

Affiliation: Department of Urology, Christian Medical College, Vellore, Tamil Nadu, India.

ABSTRACT
A young lady presented with complaints of right flank pain and a palpable mass. On contrast-enhanced tomography (CECT), a renal mass with extension into the inferior vena cava (IVC) - suggestive of renal cell carcinoma - was diagnosed and she underwent radical nephrectomy with en bloc excision of the IVC thrombus. Histopathology revealed a benign arteriovenous malformation that had extended into the IVC. Arteriovenous malformation should therefore be kept in the list of differentials for a renal mass with IVC extension.

No MeSH data available.


Related in: MedlinePlus