Kidney tumors

Kidney tumors - they come from the mesenchyme or from tubular cells


 * 1) benign - angiomyolipoma (may rupture with bleeding), oncocytoma, tumor from juxtaglomerular cells (renin production → hypertension, hypokalaemia),
 * 2) malignant - adenocarcinoma (from proximal tubule cells) - conventional (Grawitz - 70%), papillary
 * 3) metastases - cancer of the lungs, breast, stomach, hemoblastosis.

=Benign kidney tumors= Benign kidney tumors are rare. They include:


 * angiomyolipoma
 * hamartom
 * fibroma
 * hemangioma
 * leiomyoma
 * adenoma (up to 3 cm in diameter)
 * oncocytoma (a variant of an adenoma growing from intervening collecting duct cells) - it has a spherical shape and does not form metastases. It is often asymptomatic. The biggest problem is its inability to histologically distinguish from chromophobic kidney cancer, so nephrectomy is recommended.

The biological nature of the adenoma and oncocytoma is uncertain. The biological nature of angiomyolipoma is benign, but there is a risk of rupture and associated massive bleeding. An operational solution is recommended for these.

=Malignant tumors of the kidneys=

Related articles

 * Kidneys
 * Kidney (histological slide)