Calculation of residual volume by spirometric data

The current practice to measure RV is either by BPG or helium dilution methods which may not be available in all clinics due to their cost. This paper outlines a method for both direct and indirect calculation of RV via PFT with acceptable sensitivity [81%, 60%], specificity [71%, 94%] and validity [76%, 78%] for obstructive and restrictive lung disease respectively at a much lower cost

Pheochromocytoma of urinary bladder: report of a case and brief review of the literature

A case of pheochromocytoma of the bladder is presented with a review of the literature. We discuss general management principles of bladder pheochromocytoma. Successful diagnosis and treatment of this lesion requires a high index of suspicion based upon the patient's symptom complex, allowing preoperative preparation prior to surgical treatment