Litiasis ósea: patología excepcional

Abstract

Bone lithiasis is an uncommon disease unfrequent reported in the literature. Its origin is supported on urothelium and conjuctive tissue bone metaplasia. High suspicious index is needed to establish its diagnosis; where radiological signs and extracorporeal lithotripsy resistence drive to these uncommon entity. Definitive diagnosis is based on histological exam. We report a 49-year-old patient with left obstructive uropathy due to a high ureteral lumbar lithiasis who precised ureterolithectomy and partial ureterectomy after extracorporeal litotripsy failure. Histological exam confirmed bone lithiasis and squamous metaplasia. Epidemiologic, diagnostic and therapeutic aspects are briefly reviewed in literature. Bone calculus treatment includes lithectomy and urothelium resection to avoid posterior recurrence. Possible association to tumoral transformation suggests close evolutive follow-up.

Rare calcium oxalate monohydrate calculus attached to the wall of the renal pelvis

“…In fact, papillary calculi are unique among the common calculi in that they develop while attached to renal papillary tissue. The pelvic calculus of the patient in the present study is an extremely rare type, with very few previous reports 5–8 . As in the cited instances, the calculus developed on an ossification attached to the renal pelvis near the pyeloureteral zone, but in these four cases the etiology of the stones was unknown.…”

“…The pelvic calculus of the patient in the present study is an extremely rare type, with very few previous reports. [5][6][7][8] As in the cited instances, the calculus developed on an ossification attached to the renal pelvis near the pyeloureteral zone, but in these four cases the etiology of the stones was unknown. Trabecular bone tissue with an osteoblastic surface is clearly apparent in Figure 3.…”