title: [Monohydrate and dihydrate oxalic lithiasis. Calculi, their macroscopic structure (radiographic and therapeutic impact). Calciuria and oxaluria].
abstract: Calculi of pure calcium oxalate monohydroxide are hard, polish, dark brown stones, of a very tenuous crystalline structure. On the contrary, calculi of pure bihydroxide oxalate are clear irregular stones with a spiky surface. They are more friable and less hard than monohydroxide oxalate stones. Monohydroxide oxalate stones radiologically are regular and homogeneous, whereas bihydroxide oxalate stones have an irregular aspect. Monohydroxide oxalic lithiasis is less frequent than bihydroxide oxalic lithiasis. The proportion of monohydroxide lithiasis is the same in men and women whereas bihydroxide lithiasis is more frequent in men. Of a biologic point of view, in monohydroxide lithiasis, calciuria and oxaluria are often normal while proportion of hypercalciuria and hyperoxaluria is more important in bihydroxide lithiasis. Evolutivity is clearly inferior in monohydroxide lithiasis than in bihydroxide lithiasis.
mesh_terms: D000328:Adult; D002129:Calcium Oxalate / Q000032:analysis* / Q000652:urine; D003460:Crystallization; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010070:Oxalates / Q000032:analysis* / Q000652:urine; D011859:Radiography; D012737:Sex Factors
chemical_list: D010070:Oxalates; D002129:Calcium Oxalate
vernacular_title: Lithiase oxalique monohydrate et bihydrate. Les calculs, leur structure macroscopique (incidences radiographiques et thérapeutiques). Calciurie et oxalurie.