| breast neoplasms, male | Any neoplasms of the male breast. These occur infrequently in males in developed countries, the incidence being about 1% of that in females. Two-thirds of patients present with intraductal carcinoma. The average age of onset is 60 years for men. Orchiectomy was the standard treatment but it has been replaced by tamoxifen as the initial therapy since oestrogen-receptor-positive tumours are predominant in males. Orchiectomy and mastectomy may be used if initial drug therapy is not successful. The prognosis is worse than that for females. (12 Dec 1998) |
|---|---|
| vascular neoplasms | <oncology> Neoplasms located in vascular tissue or specific veins. They are differentiated from neoplasms, vascular tissue which are neoplasms composed of vascular tissue, such as angiofibroma or haemangioma. (12 Dec 1998) |
| 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) |
| pancreatic neoplasms | <radiology> Adenocarcinoma, most common, usually in pancreatic head, nasty (1-2% survival at 1 yr!), cystic neoplasms, slow-growing, more common in women, isleT-cell tumours, soft-tissue tumours (rare), metastases (breast, lung, melanoma, stomach, colon) (12 Dec 1998) |
| mammary neoplasms | Tumours of the mammary gland. Their occurrence is uncommon with the exception of the female dog, in which they account for 25% of all neoplasms. (12 Dec 1998) |
| paranasal sinus neoplasms | Neoplasms or tumours of the paranasal sinuses. Malignant neoplasms are rare, comprising 3% of all head and neck neoplasms. The majority arise in the maxillary sinus with malignancies of the ethmoid sinus constituting virtually all the remaining tumours. (12 Dec 1998) |
| genital neoplasms, male | Neoplasms of the male genitalia. (12 Dec 1998) |
| maxillary neoplasms | Cancer or tumours of the maxilla or upper jaw. (12 Dec 1998) |
| maxillary sinus neoplasms | Neoplasms or tumours of the maxillary sinus. The majority of paranasal sinus neoplasms arise here. They develop silently when confined to the sinus and produce symptoms on extension through the walls. (12 Dec 1998) |
| central nervous system neoplasms | Neoplasms located in the brain, spinal cord, or meninges. (12 Dec 1998) |
| cerebellar neoplasms | Neoplasms located in the cerebellum. (12 Dec 1998) |
| penile neoplasms | Cancers or tumours of the penis or of its component tissues. (12 Dec 1998) |
| cerebral ventricle neoplasms | Neoplasms located in the brain ventricles including the two lateral, third, and fourth ventricles. (12 Dec 1998) |
| meningeal neoplasms | Neoplasms located in any of the meninges, the dura mater, pia mater, or arachnoid. (12 Dec 1998) |
| choroid neoplasms | Tumours of the choroid; most common intraocular tumours are malignant melanomas of the choroid. These usually occur after puberty and increase in incidence with advancing age. Most malignant melanomas of the uveal tract develop from benign melanomas (nevi). (12 Dec 1998) |