Renal angiomyolipomas are generally benign tumors which are composed of smooth muscle, fat, and blood vessels. Classically these have been diagnosed with the use of arteriograms; however, since ultrasound and CAT scans have come into use these now are the common modalities for diagnosis. A11 angiomy
Bilateral renal angiomyolipoma
β Scribed by H. B. Toncaonkar; M. B. Sampat; A. V. Dalal; N. P. Dandekar; J. N. Kulkarni; M. R. Kamat
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 618 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0022-4790
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β¦ Synopsis
Bilateral renal angiomyolipoma is a rare entity, usually associated with tuberous sclerosis. Five cases of bilateral renal angiomyolipoma, all females, with a mean age of 34.6 years, are reported. All patients had symptoms attributable to lesions only on one side, with flank pain and mass the commonest symptoms encountered. Only one case had clinical evidence of stigmata of tuberous sclerosis. The mean size of the lesions on the symptomatic side was 17 cm, while that on the asymptomatic side was 2 cm. Three patients were diagnosed correctly as having angiomyolipomas preoperatively with the use of ultrasonography and computed tomography (CT); two of these were treated with total nephrectomy and the third with partial nephrectomy. The other two cases were seen before the availability of CT and were only diagnosed intraoperatively. Both patients were treated with total nephrectomy. The lesions on the asymptomatic side were kept on close surveillance, Two patients developed an increase in the size of the lesions in the contralateral kidney 1 year and 3% years after the first surgery. Both patients were treated with partial nephrectomy . All patients are alive at 3-14 years (mean 6.6 years) after operation.
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## BACKGROUND. Angiomyolipoma is a benign kidney tumor with distinctive pathologic and clinical features. Because the prognosis differs from many other renal and retroperitoneal tumors, accurate diagnosis on cytologic material may be important for appropriate management.
Chromosome analysis of a benign, unilateral, renal angiomyolipoma revealed the karyotype 44,XX, -8, -12, -14, -2 I , + der (8q I4q), + der( I2)( I2pter+ I2q 14-1 S : : I2q24+12q 14-I S : : 2 I q2 I 4 2 I qter). This indicates that structural changes of 12q 13-IS, which are so frequently observed in