["Sand-clock" lithiasis on prostatic transurethral resection bed]. / Litiasis en "reloj de arena" sobre celda de resección transuretral prostática.

OBJECTIVES: Although uncommon, prostatic surgical bed lithiasis may present among post-TURP complications. The present study underscores the importance of diagnosis and treatment. METHODS/RESULTS: We report on a patient with magnesium ammonium phosphate hourglass lithiasis in the prostatic surgical bed one year and a half following transurethral resection due to adenomyomatous prostatic hyperplasia that was successfully treated by intracorporeal lithotripsy with the Lithoclast. The physiopathological, clinical, diagnostic and therapeutic aspects are discussed. CONCLUSIONS: This condition should be suspected in patients with dysuric syndrome post-TURP. The importance of simple complementary diagnostic procedures as DRE and plain abdominal films in discarding lithiasis in underscored. We consider retrograde endoscopic manipulation and ultrasonic lithotripsy or penumatic lithotripsy with the Lithoclast to be the safest procedures for this type of lithiasis.

[Late metastasis in thyroid gland after nephrectomy for renal clear cell carcinoma]. / Metástasis tardía en glándula tiroidea tras nefrectomia por carcinoma renal de células claras.

Renal carcinoma natural history is unpredictable. Spontaneous metastases regression after nephrectomy, as well as late recurrence are suggestive of this peculiar human neoplasm. tumor metastases localized to thyroid gland are uncommon in clinical practice; and carcinoma of the kidney, breast, lung, melanoma and gastrointestinal tract tumors are responsible for the majority of them. This paper reports on a patient with metachronous thyroid gland metastases after fourteen years of renal carcinoma nephrectomy, with one year after hemithyroidectomy recurrence on cervical striated muscle followed by surgical excision. Therapeutical aspects are briefly reviewed in literature, emphasizing surgical treatment and the need of all-life follow-up, with more alert attitude toward thyroid gland after renal cell carcinoma nephrectomy.

[Sign of the prominent papilla]. / Signo de la papila prominente.

Renal papillae can be seen ultrasonographically in acute dilatation of the urinary tract as echogenic formations within the ecstatic calices. The foregoing, however, must be distinguished from radiotransparent lithiasis, urothelial neoformation or solid infectious detritus. Occasionally, making the differential diagnosis may entail some difficulty.