| Castle, William | <person> U.S. Physician, *1897. See: Castle's intrinsic factor. (05 Mar 2000) |
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| 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) |
| 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) |
| hyaline cast | A relatively transparent renal cast composed of proteinaceous material derived from disintegration of cells; seen in patients with renal disease or transiently with exercise, fever, congestive heart failure, and diuretic therapy. (05 Mar 2000) |
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| shadow-cast replica | <microscopy> A replica which has been shadowed. See: shadowing. (05 Aug 1998) |
| split cast method | A procedure for placing indexed casts on an articulator to facilitate their removal and replacement on the instrument, the procedure of checking the ability of an articulator to receive or be adjusted to a maxillomandibular relation record. Synonym: Needles' split cast method. (05 Mar 2000) |
| split cast mounting | A cast with key grooves on its base, mounted on an articulator for the purpose of easy removal and accurate replacement; split remounting metal plates may be used instead of grooves in casts, a means for testing the accuracy of articulator adjustment. (05 Mar 2000) |
| spurious cast | <nephrology> An elongated, ribbon-like mucous thread with poorly defined edges and pointed or split ends, often confused with a true urinary cast. Synonym: cylindroid, mucous cast, pseudocast, spurious cast. (05 Mar 2000) |
| Needles' split cast method | A procedure for placing indexed casts on an articulator to facilitate their removal and replacement on the instrument, the procedure of checking the ability of an articulator to receive or be adjusted to a maxillomandibular relation record. Synonym: Needles' split cast method. (05 Mar 2000) |
| decidual cast | A mold of the interior of the uterus formed of the exfoliated mucous membrane in cases of extrauterine gestation. (05 Mar 2000) |
| dental cast | <dentistry> A positive likeness of a part or parts of the oral cavity. (05 Mar 2000) |
| diagnostic cast | A positive replica of the form of the teeth and tissues made from an impression. (05 Mar 2000) |
| investment cast | A cast made of material that will withstand the high temperatures of metal casting or soldering without disintegrating. Synonym: investment cast. (05 Mar 2000) |
| epithelial cast | A cast that contains epithelial cells and their remnants; occurs most frequently in renal tubules and urine as a marker for renal tubular necrosis. (05 Mar 2000) |
| tube cast | Any type of cast formed in a renal tubule, and found in the urine consisting of various materials, e.g., albumin, cells, blood. Synonym: tube cast. (05 Mar 2000) |
| false cast | <nephrology> An elongated, ribbon-like mucous thread with poorly defined edges and pointed or split ends, often confused with a true urinary cast. Synonym: cylindroid, mucous cast, pseudocast, spurious cast. (05 Mar 2000) |
| fatty cast | A renal or urinary cast consisting largely of fat globules; those containing doubly refractile bodies (composed of cholesterol) are found in the nephrotic syndrome. (05 Mar 2000) |
| fibrinous cast | A yellow cast that somewhat resembles a waxy cast; more likely to occur in the urine of certain patients with acute nephritis. (05 Mar 2000) |