| yaba monkey tumour virus | The type species of yatapoxvirus, a tumour-producing DNA virus discovered in monkeys in yaba, nigeria. It has been found to produce histiocytomas in monkeys and humans. (12 Dec 1998) |
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| Yaba tumour | <oncology, virology> A poxvirus-induced neoplasm of African monkeys caused by the Yaba monkey virus, a member of the family Poxviridae. It is associated with tumour-like growths occur chiefly on the head and limbs. The tumours are benign and the natural disease has been reported only in Africa in monkeys kept outdoors. (05 Mar 2000) |
| yolk sac tumour | An unusual and aggressive tumour of germ-cell origin that reproduces the extraembryonic structures of the early embryo. It is the most common malignant germ cell tumour found in children. It is characterised by a labyrinthine glandular pattern of flat epithelial cells and rounded papillary processes with a central capillary (schiller-duval body). The tumour is rarely bilateral. Before the use of combination chemotherapy, the tumour was almost invariably fatal. (12 Dec 1998) |
| kidney tumour | <oncology> A benign or cancerous growth originating from kidney tissue (for example renal cell carcinoma, hypernephroma). (27 Sep 1997) |
| fat necrosis tumour | <surgery> Destruction of fat cells in the breast due to trauma or injury that can cause a hard noncancerous lump. (09 Oct 1997) |
| Zollinger-Ellison tumour | A non-beta cell tumour of pancreatic islets causing the Zollinger-Ellison syndrome. (05 Mar 2000) |
| klatskin's tumour | Adenocarcinoma of the common hepatic duct bifurcation. These tumours are generally small, sharply localised, and seldom metastasizing. G. Klatskin's original review of 13 cases was published in 1965. Once thought to be relatively uncommon, tumours of the bifurcation of the bile duct now appear to comprise more than one-half of all bile duct cancers. (12 Dec 1998) |
| klatskin tumour | <radiology> Tumour at junction of right and left intrahepatic bile ducts, slower growth than usual cholangiocarcinoma, late to metastasize (12 Dec 1998) |
| Koenen's tumour | Multiple smooth firm nodules formed at the nail folds, often over 10 mm in length, which appear at or after puberty in some patients with tuberous sclerosis. Synonym: Koenen's tumour. (05 Mar 2000) |
| Krukenberg's tumour | A metastatic carcinoma of the ovary, usually bilateral and secondary to a mucous carcinoma of the stomach, which contains signet-ring cells filled with mucus. (05 Mar 2000) |
| krukenberg tumour | <radiology> Ovarian metastasis of stomach carcinoma, also: colon, breast, other mucin-gland organs, 6% of malignant ovarian tumours (12 Dec 1998) |
| fibroid tumour | Old term for certain fibromas and leiomyomas. (05 Mar 2000) |
| Landschutz tumour | A transplantable, possibly isoantigenic, highly virulent neoplasm which can be grown in any strain of mice; the host is killed in a few days by what is apparently an anaplastic carcinoma. (05 Mar 2000) |
| leydig cell tumour | The most common nongerminal tumour of the testis, derived from the leydig cells. It is rarely malignant. This tumour appears among 1-3% of testicular tumours and although they may be seen in children, the median age of appearance is 60 years. They are sometimes seen in women as ovarian tumours. Clinically, symptoms are usually related to the endocrine abnormalities induced by this tumour. (12 Dec 1998) |
| Lindau's tumour | <oncology, tumour> A haemangioma, or type of tumour composed of blood vessel or angioblast cells, which occurs in the brain. (09 Oct 1997) |