| castleman disease | <radiology> Angiofollicular lymph node hyperplasia, benign lymphoid hyperplasia, massively enlarged lymph nodes, mediastinum most common; rarely in mesentery, age less than 30 yrs, types: hyaline vascular (90%), asymptomatic, vascular proliferation and hyalinization, plasma cell (10%), fever, anaemia, increased sed rate, increased IgG (12 Dec 1998) |
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| Castleman's disease | Solitary masses of lymphoid tissue containing concentric perivascular aggregates of lymphocytes, occurring usually in the mediastinum or hilar region of young adults; similar changes have been reported outside the mediastinum and, if associated with interfollicular sheets of plasma cells, may progress to lymphoma or plasmacytoma. Synonym: angiofollicular mediastinal lymph node hyperplasia, Castleman's disease. (05 Mar 2000) |
| Castleman, Benjamin | <person> U.S. Pathologist, 1906-1982. See: Castleman's disease. (05 Mar 2000) |
| castor bean | The seed of the castor bean or castor oil plant, ricinus communis, which yields castor oil. (12 Dec 1998) |
| castor oil | <chemical> An oil obtained from the seed of ricinus communis. It is used as a cathartic and as a plasticiser for pharmaceutical preparations, and has been used as a bland emollient to the skin in certain dermatoses. Pharmacological action: cathartic, emollients, pharmaceutic aid. Chemical name: Castor oil (12 Dec 1998) |
| castrate | To remove the testicles or the ovaries. Origin: L. Castro, pp. -atus, to deprive of generative power (male or female) (05 Mar 2000) |
| castration | The removal of the gonads or their destruction as by radiation or parasites. Origin: L. Castratio (18 Nov 1997) |
| castration anxiety | A child's fear of injury to the genitals by the parent of the same sex as punishment for unconcious guilt over oedipal feelings, fantasied loss of the penis by a female or fear of its actual loss by a male, unconscious fear of injury from those in authority. Synonym: castration anxiety. (05 Mar 2000) |
| castration cells | Altered basophilic cells of the anterior lobe of the pituitary that develop following castration; the body of the cell is occupied by a large vacuole that displaces the nucleus to the periphery, giving the cell a resemblance to a signet ring. Synonym: signet ring cells. (05 Mar 2000) |
| castration complex | A child's fear of injury to the genitals by the parent of the same sex as punishment for unconcious guilt over oedipal feelings, fantasied loss of the penis by a female or fear of its actual loss by a male, unconscious fear of injury from those in authority. Synonym: castration anxiety. (05 Mar 2000) |
| casts, surgical | Dressings made of fibreglass, plastic, or bandage impregnated with plaster of paris used for immobilization of various parts of the body in cases of fractures, dislocations, and infected wounds. In comparison with plaster casts, casts made of fibreglass or plastic are lightweight, radiolucent, able to withstand moisture, and less rigid. (12 Dec 1998) |
| casualty | An injury, or the victim of an accident. (05 Mar 2000) |