Ces Urol 2001, 5(5):15-19 | DOI: 10.48095/cccu2001037

Metanephric adenoma - a case report and the review of literature

M. Hora¹, O. Hes², Z. Ouda¹, M. Michal², L. Boudová², Z. Chudáček³

Lékařská fakulta Univerzity Karlovy a Fakultní nemocnice v Plzni

¹ Urologická klinika

² Šiklův patologicko-anatomický ústav

³ Radiodiagnostické oddělení

The metanephric adenoma (AAA) is a relatively rare tumour. It was and it still often is confused with particularly the papilar renal carcinoma and nephroblastoma. It afflicts patients of any age, even children, and more frequently female (2:1). About 100 cases have been published so far and in only one case the metastases to the regional lymph nodes are reported. In the other cases the AAA was benign. It is impossible to distinguish the AAA from other renal tumours preoperatively by imaging studies.
Our evidence: isoechogenous, well demarcated expansion of the right kidney, 5cm in diameter, was found in the 43 old female. The finding of a homogenous tumour was verified by the CT scan. Radical nephrectomy without adrenalectomy was carried out. The homogenous, very solid, spherical whitish tumour grew out of the dorsal lip of the pars intermedia. It was well capsulated and it did not infiltrate the structures of the hilus. The proportions of the tumour were 5x4x3.5cm. The histological examination proved a typical AAA. The patient is doing well three months after the surgery.
The AAA is a rare, entirely specific renal tumour. Its malignant potential is low to zero. The treatment is surgical. The best choice is the kidney saving surgery and follow up.

Keywords: Renal tumours, Metanephric adenoma, Metanephric adenofibroma

Published: December 1, 2001