Simple renal cysts are commonly observed and asymptomatic in the majority of patients. These cysts are usually located peripherally and are unnoticed unless they grow large enough to cause pain by impinging on the kidney.1 In contrast to the simple cyst, the peripelvic renal cyst is contiguous to the renal pelvis and infrequently observed.1 Often peripelvic cysts either stem from an embryologic...

Diagnostic accuracy of ultrasonography and cholangiography (ERCP/PTC) was compared in determining the site and nature of obstruction in obstructive jaundice. Ultrasound was performed in 50 patients with clinical diagnosis of obstructive jaundice. All patients subsequently underwent ERCP/PTC and/or surgery. ERCP was performed in 38 and PTC in 15 patients. The positive predictive value for the si...

Intestinal pseudo-obstruction is defined as a syndrome in which symptoms and signs of intestinal obstruction occur without evidence for a mechanical obstruction."2 Previous reviews3'4 have highlighted the heterogeneous nature of the syndrome with a wide variety of clinical associations, pathological abnormalities of the smooth muscle or myenteric plexus, and presenting features. The acute syndr...

Clinical signs of upper airway obstruction provide valuable information regarding the degree of airway compromise and the anatomic compartment involved but are not specific to any disease process. The purpose of the diagnostic workup is to determine the extent and nature of the condition. The extent of the physical examination depends on the degree of upper airway obstruction, and complete eval...

RATIONALE Obstructive jaundice can raise problems to diagnostic imaging. The radiologist must choose the most appropriate examination that delivers the most important diagnostic information because the differences between a lithiasic obstruction and a tumoral one are vital. This information helps the surgeon speed up the process of decision-making, because the treatment may be very different in...

BACKGROUND Conventional transabdominal ultrasound usually fails to visualize parts of the ureter or extrahepatic bile duct covered by bowel gas. In this study, we propose a new method for gaining acoustic access to the ureters and extrahepatic bile duct to help determine the nature of obstruction to these structures when conventional transabdominal ultrasound fails. METHODS The normal saline ...