| GUS | genitourinary sphincter; genitourinary system |
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| IAS | immunosuppressive acidic substance; infant apnea syndrome; insulin autoimmune syndrome; interatrial ... |
| ICS | ileocecal sphincter; immotile cilia syndrome; impulse-conducting system; integrated case study; inte... |
| SD | Sandhoff disease; senile dementia; septal defect; serologically defined; serologically detectable; s... |
| SO | salpingo-oophorectomy; Schlatter-Osgood [test]; second opinion; sex offender; spheno-occipital [sync... |
| oesophageal branches of the recurrent laryngeal nerve | <anatomy, nerve> Supply motor and sensory fibres to cervical oesophagus on right side and to cervical and upper thoracic oesophagus on left. Synonym: rami oesophagei nervi laryngei recurrentis. (05 Mar 2000) |
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| oesophageal branches of the thoracic aorta | Branches arising directly from the anterior aspect of the portion of the thoracic aorta adjacent to the oesophagus, by which most of the oesophagus is supplied. Synonym: rami oesophageales aortae thoracicae. (05 Mar 2000) |
| oesophageal branches of the vagus nerve | <anatomy, nerve> Includes both branches passing directly from vagi and the branches from the recurrent laryngeal nerves that form the oesophageal nerve plexus which surrounds oesophagus, supplying it and adjacent portions of the pericardium. Synonym: rami oesophagei nervi vagi. (05 Mar 2000) |
| oesophageal cancer | Cancer of the oesophagus (the swallowing tube that passes from the throat to the stomach). The risk of cancer of the oesophagus is increased by long-term irritation of the oesophagus such as with smoking, heavy alcohol intake, and Barrett's oesophagitis. Cancer of the oesophagus can cause difficulty and pain with swallowing solid food. Diagnosis of oesophageal cancer can be made by barium X-ray of the oesophagus, and confirmed by endoscopy with biopsy of the cancer tissue. (12 Dec 1998) |
| oesophageal candidiasis | <gastroenterology, microbiology, oncology> Infection with a fungus of the genus Candida. It is usually a superficial infection of the moist cutaneous areas of the body and is generally caused by Candida albicans, it most commonly involves the skin (dermatocandidiasis), oral mucous membranes (oral candidiasis), respiratory tract (bronchocandidiasis) and vagina (vaginal candidiasis or thrush). Rarely there is a systemic infection or endocarditis. Oral candidiasis: describes a fungal (yeast) infection of the oral cavity due to Candida. It is common in infants, diabetics or those on chemotherapy and is well recognised in patients with HIV infection and AIDS. Oesophageal candidiasis: Infection of the oesophagus by the yeast-like fungus Candidal albicans. Usually occurs in the immunocompromised individual (AIDS or following chemotherapy). Oral candidiasis is a predisposing factor but oesophageal involvement can occur without evidence of infection in the oral cavity. Symptoms include difficulty swallowing, pain on swallowing and oral lesions. Diagnosis is made using endoscopy. Treatment is with antifungal agents such as ketoconazole or fluconazole. Synonym: moniliasis, candidosis, oidiomycosis, blastodendriosis. (16 Dec 1997) |
| oesophageal carcinoma | <radiology> EtOH, tobacco, achalasia, Plummer-Vinson syndrome, stricture (caustic, radiation), Barrett mucosa (GE reflux, hiatus hernia), tylosis, geographical areas: Iran, China, southern France, Japan, head/neck carcinoma <strong>not</strong> Sprue / coeliac disease (12 Dec 1998) |
| oesophageal carcinoma risk factors | <radiology> P Plummer-Vinson Web, A achalasia, alcohol, B Barrett oesophagus, S stricture, T tylosis, tobacco see: oesophageal carcinoma (12 Dec 1998) |
| oesophageal carcinoma: types | <radiology> Histologic types: squamous cell carcinoma (95%), adenocarcinoma (4%), 70% from Barrett oesophagus, carcinosarcoma = pseudosarcoma = spindle cell squamous cell carcinoma, usually middle 1/3 of oesophagus, large, polypoid, smooth, intramural mass; may be pedunculated, mucoepidermoid carcinoma, adenoid cystic carcinoma radiologic types: polypoid/fungating form (most common), sessile/pedunculated tumour with lobulated surface, applecore lesion, ulcerating form, infiltrating form, gradual narrowing with smooth transition (Differential diagnosis: benign stricture), varicoid form: superficial spreading carcinoma, thickened nodular tortuous longitudinal folds (Differential diagnosis: varices) (12 Dec 1998) |
| oesophageal constrictions | Three narrowings of the oesophagus normally demonstrated radiographically following a barium swallow: the upper or pharyngeal oesophageal constriction, at the beginning of the oesophagus, is caused by the cricopharyngeus muscle, often referred to as the superior oesophageal sphincter; the middle or aortic constriction is a left-sided narrowing due to the oesophagus passing the aortic arch; the inferior or diaphragmatic oesophageal constriction corresponds to the passage of the oesophagus through the oesophageal hiatus of the diaphragm. Synonym: impressions of oesophagus. (05 Mar 2000) |
| oesophageal diverticula | <radiology> Pharyngo-oesophageal (Zenker), cricopharyngeal spasm, Killian's dehiscence, posterior; if lateral, usually on left, Treatment: diverticulopexy with or without myotomy, mid-oesophageal, pulsion, not traction (not associated with TB), dysmotility, usually asymptomatic, distal (epiphrenic), dyity (including DES and achalasia), symptomatic, usually on right, Treatment: excision and myotomy, ** all due to PULSION (12 Dec 1998) |
| oesophageal diverticulum | Saccular, outward protrusion of all or a portion of the oesophageal wall from the lumen of the oesophagus. (12 Dec 1998) |
| oesophageal dysmotility | <radiology> Achalasia, Chagas disease, pseudoachalasia, scleroderma, diffuse oesophageal spasm, other causes, oesophageal atresia repair, neurologic disease (unilateral pharyngeal paralysis), oesophagitis (12 Dec 1998) |
| oesophageal dysrhythmia | Abnormal motility of the muscular layers of the oesophageal wall, such as occurs in oesophageal spasm. (05 Mar 2000) |
| oesophageal filling defect | <radiology> Tumour, carcinoma (oesophagus, stomach extending proximally), leiomyoma / leiomyosarcoma, polyp: fibrovascular, inflammatory, adenomatous, papilloma, carcinosarcoma, lymphoma, metastasis, oesophageal varix, extrinsic lesion (vascular impression, adenopathy, cyst), foreign body (12 Dec 1998) |
| oesophageal fistula | Abnormal passage communicating with the oesophagus. (12 Dec 1998) |