Urinary concentration of osteopontin and association with urinary supersaturation and crystal formation.

Objective: In this study, we measured urinary osteopontin (OPN) concentrations in urolithiasis patients as well as in healthy volunteers, and investigated the relationship between urinary excretion of OPN and urinary supersaturation level.

Methods: Supersaturation levels (AP indexes) were determined by using Tiselius's index. Crystals with a maximum diameter of 12 ìm or larger and less than 5 ìm were counted by scanning electron microscopy.

[A case of Rathke's cleft cyst in association with anterior communicating artery aneurysm presenting a rare visual field defect].

We report a case of Rathke's cleft cyst associated with anterior communicating artery aneurysm. The patient was 60-year-old woman who developed visual disturbance two months before admission to our hospital. Visual acuity on the right was 0.