| carcinoma, adenoid cystic | Carcinoma characterised by bands or cylinders of hyalinised or mucinous stroma separating or surrounded by nests or cords of small epithelial cells. When the cylinders occur within masses of epithelial cells, they give the tissue a perforated, sievelike, or cribriform appearance. Such tumours occur in the mammary glands, the mucous glands of the upper and lower respiratory tract, and the salivary glands. They are malignant but slow-growing, and tend to spread locally via the nerves. (12 Dec 1998) |
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| pancreatic cystic neoplasms | <radiology> Microcystic adenoma, glycogen, benign, mucinous cystic neoplasm, macrocystic adenoma, cystadenoma/cystadenocarcinoma, mucin, pre-malignant, Both occur more commonly in women, peak in middle age (12 Dec 1998) |
| papillary cystic adenoma | <tumour> An adenoma in which the lumens of the acini are frequently distended by fluid, and the neoplastic epithelial elements tend to form irregular, fingerlike projections. (05 Mar 2000) |
| mesothelioma, cystic | A peritoneal mesothelioma affecting mainly young females and producing cysts of variable size and number lined by a single layer of benign mesothelial cells. The disease follows a benign course and is compatible with a normal life expectancy, requiring occasionally partial excision or decompression for relief of pain or other symptoms. Malignant potential is exceptional. (12 Dec 1998) |
| chronic cystic mastitis | Older term corresponding to fibrocystic condition of the breast. (05 Mar 2000) |
| mucinous cystic neoplasm of pancreas | <radiology> = macrocystic adenoma of pancreas, cystadenoma / cystadenocarcinoma, M:F = 1:9, 40-60 years of age, malignant or pre-malignant, large mass (mean 12 cm), multilocular cysts, thick septations, tail / body in 85% (unlike adenocarcinoma and microcystic adenoma), hypo-/avascular, Differential diagnosis: panc pseudocyst, ** Cf: microcystic adenoma (12 Dec 1998) |
| multilocular cystic nephroma | <radiology> Cystic hamartoma, cystadenoma, congenital, usually benign, multiple small, noncommunicating cysts in single renal mass, usually large (mean 10 cm), with or without calcification, 50% detected in childhood, remainder in older adults, kids: M more than F, adults: F more than M (12 Dec 1998) |
| cystic | 1. Relating to the urinary bladder or gallbladder. 2. Relating to a cyst. 3. Containing cysts. Synonym: cystous. (05 Mar 2000) |
| cystic acne | <dermatology> A form of acne which results from the bacterial infection of cysts deep within the skin. Generally requires treatment with antibiotics and other agents (Isotretinoin). Without treatment cystic acne may result in scarring. (27 Sep 1997) |
| cystic adenomatoid malformation of lung | <radiology> Only true pulmonary cystic disease of newborn, three X-ray types: multicystic, walls of varying thickness, multicystic, one large dominant thin-walled cyst, solid, mediastinal shift common, cysts often contain foetal lung fluid, Treatment: surgery Cf: congenital lobar emphysema (12 Dec 1998) |
| cystic adenomatoid malformation of lung, congenital | A developmental anomaly that usually becomes apparent in the neonatal period with progressive respiratory distress. This malformation is a focal pulmonary dysplasia characterised by a multicystic mass of terminal bronchiolar structures. Ccam is classified into 3 separate types (I, II, III) depending on cyst size. (12 Dec 1998) |
| cystic adnexal masses | <radiology> Ovarian cyst, mature follicle measures up to 2.5 cm at ovulation, corpus luteum cyst common in first 16 weeks of pregnancy, polycystic (Stein-Leventhal) disease, paraovarian cyst, Wolffian duct remnants in broad ligament, ovarian neoplasm, serous cystadenoma (most common benign ovarian tumour), mucinous cystadenoma (usually complex), cystic teratoma (usually complex), endometriosis, diffuse (not detectable by ultrasound), localised (generally anechoic or hypoechoic), ectopic pregnancy, pelvic inflammatory disease, gonorrhoea or chlamydia, localised abscess and hydrosalpinx, non-gynecologic mass, mesenteric cyst, ureterocele, bladder diverticula, lymphocele (12 Dec 1998) |
| cystic artery | <anatomy, artery> Origin, right branch of hepatic; distribution, gall bladder and visceral surface of the liver. Synonym: arteria cystica. (05 Mar 2000) |
| cystic bronchiectasis | Bronchiectasis in which the bronchi end in blind sacs greater in diameter than the draining bronchi. See: saccular bronchiectasis. (05 Mar 2000) |
| cystic carcinoma | <tumour> A carcinoma in which true epithelium-lined cysts are formed, or degenerative changes may result in cystlike spaces. (05 Mar 2000) |