Hossein Karami

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BACKGROUND AND PURPOSE Gaining access to the pyelocaliceal system in percutaneous nephrolithotomy (PCNL) is routinely performed using fluoroscopic guidance with the patient in a prone position. We compared ultrasonography-guided access for PCNL with the patient in the flank position with conventional fluoroscopy-guided access. PATIENTS AND METHODS A total(More)
BACKGROUND AND THE PURPOSE OF THE STUDY Functional constipation is prevalent in children. Recently polyethylene glycol has been introduced as an effective and safe drug to treat chronic constipation. There are only a few clinical trials on comparison of PEG and liquid paraffin in childhood constipation. The purpose of this study was to evaluate clinical(More)
Ureteral obstruction with subsequent hydronephrosis is clinically common. Most cases are identified and diagnosed in the perinatal period. The diagnosis of ureteropelvic junction obstruction (UPJO) implies a functionally significant impairment of the urinary transportation from the renal pelvis to the ureter. Although most cases are probably congenital in(More)
PURPOSE To assess the feasibility of one-stage acute dilation of the nephrostomy tract with a 30F Amplatz dilator in patients who are candidate for percutaneous nephrolithotomy (PCNL) regardless of whether there is a previous renal scar to make the procedure less time consuming and more cost effective. PATIENTS AND METHODS The outcomes of one-stage tract(More)
PURPOSE Significant early postoperative discomfort after percutaneous procedures is usually secondary to nephrostomy tubes and externalized ureteral catheters. We describe our modification of the traditional percutaneous nephrolithotomy (PCNL) approach that we name "totally tubeless PCNL." PATIENTS AND METHODS Between June 2000 and May 2001, 60(More)
INTRODUCTION The present study aimed to assess the efficacy and safety of percutaneous nephrolithotomy (PCNL) in elderly patients. MATERIALS AND METHODS We retrospectively reviewed 50 PCNLs performed in the elderly patients (age > 65 years) carried out in our clinic from 2001 through 2007 and compared those with 248 PCNLs performed in younger patients(More)
PURPOSE Our aim was to evaluate the safety and efficacy of percutaneous nephrolithotomy (PCNL) with ultrasonography (US)-guided renal access in the lateral decubitus flank position. PATIENTS AND METHODS From July 2006 to March 2008, 40 patients with renal stones > 2 cm underwent PCNL with US-guided renal access in the lateral decubitus flank position by a(More)
PURPOSE To compare percutaneous nephrolithotomy (PCNL) safety and efficacy in prone, supine, and flank positions. METHODS A total number of 150 candidates for PCNL were randomly assigned into prone, supine, and flank groups. Patients in groups 1 and 2 underwent fluoroscopy-guided PCNL in prone and supine positions, respectively, while patients in group 3(More)