| acalculous cholecystitis | <radiology> 5-10% of acute cholecystitis aetiology: depressed motility and starvation: trauma, burns, surgery, TPN, anaesthesia, narcotics, decreased blood flow through cystic artery: congestive heart failure, arteriosclerosis, polyarteritis nodosa, systemic lupus erythematosus, diabetes, shock, obstruction of cystic duct by extrinsic inflammation, lymphadenopathy, metastases, infection: Salmonella, cholera, Kawasaki syndrome (12 Dec 1998) |
|---|---|
| acute cholecystitis | <radiology> 80-95% secondary to cystic duct obstruction by gallstone, 5-6th decade; 75% female ultrasound (sensitivity 85-95%; specificity 64-100%): gall bladder wall thickening (greater than3mm), halo sign = gall bladder wall lucency (in 70%), gall bladder hydrops = AP diameter more than 5cm, sonographic Murphy sign (85%), pericholecystic fluid, hepatobiliary scan (95% accuracy): nonvisualization of gallbladder complications: gangrene, irregular wall (ulcers, intraluminal hemmorhage, necrosis), hyperechoic foci within gall bladder wall (microabscesses in Rokitansky-Aschoff sinuses), perforation (5-10%): most commonly in fundus, empyema: gravity dependent debris (12 Dec 1998) |
| cholecystitis | <pathology, surgery> Acute or chronic inflammation of the gallbladder. See: biliary tract. (15 Jan 1998) |
| chronic cholecystitis | <radiology> most common form of gallbladder inflammation, gallstones, gallbladder wall thickening, small gallbladder hepatobiliary scan: normal gall bladder visualization in most patients, delayed gall bladder visualization; visualization of bowel before gall bladder (sensitivity 45%, specificity 90%), noncontractility/decreased response after CCK (12 Dec 1998) |
| xanthogranulomatous cholecystitis | Chronic cholecystitis with conspicuous nodular infiltration by lipid macrophages; may be associated with biliary obstruction by calculi. (05 Mar 2000) |
| emphysematous cholecystitis | <radiology> Ring of air in RUQ, Differential diagnosis: pneumatosis coli, lipomatosis of gall bladder (rare!), follow plain X-ray with ultrasound, males (3:1), especially diabetics, usually acalculous, high mortality (12 Dec 1998) |
| gangrenous | Relating to or affected with gangrene. Synonym: mortified. (05 Mar 2000) |
| gangrenous appendicitis | Acute appendicitis with necrosis of the wall of the appendix, most commonly developing in obstructive appendicitis and frequently causing perforation and acute peritonitis. (05 Mar 2000) |
| gangrenous cellulitis | Infection of soft tissue with anaerobes, usually including clostridia, producing extensive tissue necrosis. Synonym: necrotizing cellulitis. (05 Mar 2000) |
| gangrenous emphysema | <microbiology> A severe form of gangrene (tissue necrosis) caused by Clostridium infection. Also referred to as necrotising subcutaneous infection. Results in death of the subcutaneous tissues and muscle layers. See: necrotising fascitis. (27 Sep 1997) |
| gangrenous pharyngitis | Gangrenous inflammation of the pharyngeal mucous membrane. (05 Mar 2000) |
| gangrenous pneumonia | Gangrene of the lungs. (05 Mar 2000) |
| gangrenous rhinitis | See: cancrum nasi. (05 Mar 2000) |
| gangrenous stomatitis | Stomatitis characterised by necrosis of oral tissue. See: noma. (05 Mar 2000) |
| epidemic gangrenous proctitis | A generally fatal disease affecting chiefly children in the tropics, characterised by gangrenous ulceration of the rectum and anus, accompanied by frequent watery stools and tenesmus. Synonym: bicho, caribi, Indian sickness. (05 Mar 2000) |