The prevalence of vitamin B(12) deficiency in patients with type 2 diabetes: a cross-sectional study.

Purpose: The purpose of this study is to define the prevalence of vitamin B(12) deficiency in a type 2 diabetic population within a primary care practice. Metformin use and advanced age are associated with vitamin B(12) deficiency and often present in type 2 diabetic patients, yet the prevalence of vitamin B(12) deficiency in the diabetic population is unknown.

Methods: We conducted a cross-sectional study of 203 outpatient type 2 diabetic patients at a large military primary care clinic.

Nasoseptal chondrosarcoma resection requiring anterior fossa floor repair: a case report.

We present a case in which a 23-year-old male patient diagnosed with nasoseptal chondrosarcoma with anterior cranial fossa extension underwent combined surgical approaches to optimize complete resection of the tumor. Surgery was followed by a 6-month course of proton-beam radiation therapy. Extensive tumors of this type with significant intracranial extension require surgical repair of the anterior fossa floor.