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Intestinal Parasites and Infestation

KEY FACTS Terminology Enteric infection with roundworm Ascaris lumbricoides (ascariasis) Enteric protozoal infection with Giardia lamblia (giardiasis) Cryptosporidium (cryptosporidiosis) Entamoeba histolytica (amebiasis) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Small Intestine: Imaging Approach and Differential Diagnosis

Embryology and Congenital Malformations The small intestine and the right side of the colon constitute the embryologic midgut, which herniates into the umbilical cord during the process of marked elongation in fetal development. Following a 270° counterclockwise rotation, the midgut returns to the peritoneal cavity. Errors during this complex series of events are common, resulting in varying degrees of malrotation ± volvulus. This may result in…

Imaging of Bariatric Surgery

KEY FACTS Imaging CT and upper GI radiography have complementary roles Laparoscopic adjustable gastric banding (LAGB) procedure (a.k.a. "lap band") Less effective for sustained weight loss Complications: Less common and less varied May be too tight or too loose Band may erode into stomach or esophagus Sleeve gastrectomy (gastric sleeve) 75% of stomach is removed by dividing stomach along its long axis – Complications: Less or…

Iatrogenic Injury: Feeding Tubes

KEY FACTS Terminology Patient injury caused by improper feeding tube placement Feeding tubes Small, soft enteric tubes Some with flexible metallic tips Tip of feeding tube should be located beyond stomach (distal duodenum or jejunum) Nasogastric tubes Large bore, moderately stiff Used for temporary gastric and bowel decompression Tip placed in pylorus can cause outlet obstruction Gastrostomy and jejunostomy tubes Balloon-tipped catheters should not be placed…