| MCAS | middle cerebral artery syndrome |
|---|---|
| MCAT | medical college admission test; middle cerebral artery thrombosis |
| MHA | major histocompatibility antigen; May-Hegglin anomaly; Mental Health Association; methemalbumin; mic... |
| MHV | magnetic heart vector; middle hepatic vein; mouse hepatitis virus |
| mid | middle |
| ear canal, self-cleaning | most of the time the ear canals are self-cleaning, that is, there is a slow and orderly migration of ear canal skin from the eardrum to the outer opening. Old earwax is constantly being transported from the deeper areas of the ear canal to the opening where it usually dries, flakes, and falls out. (12 Dec 1998) |
|---|---|
| ear cartilages | Cartilages of the auricle (pinna) and the external acoustic meatus. (12 Dec 1998) |
| ear cleaning | When so much wax accumulates that it blocks the ear canal (and hearing), your physician may have to wash it out, vacuum it, or remove it with special instruments. Alternatively, your physician may prescribe ear drops what are designed to soften the wax (such as Cerumenex). Never put anything smaller than your elbow in your ear! Wax is not formed in the deep part of the ear canal near the eardrum, but only in the outer part of the canal. So when a patient has wax pushed up against the eardrum, it is often because he has been probing his ear with such things as cotton-tipped swabs (such as Q-Tips), bobby pins, or twisted napkin corners. Such objects only serve as ramrods to push the wax in deeper. Also, the skin of the ear canal and the eardrum is very thin, fragile and easily injured. The ear canal is more prone to infection after it has been whipped clean of the good coating type wax. In addition, we have seen many perforated eardrums as a result of these efforts. (12 Dec 1998) |
| ear crystals | Crystalline particles of calcium carbonate and a protein adhering to the gelatinous membrane of the maculae of the utricle and saccule. Synonym: statoconia, ear crystals, otoconia, otoliths, otolites, sagitta. Origin: G. Statos, standing, + lithos, stone (05 Mar 2000) |
| ear cyst | A sebaceous cyst that occurs most commonly in the ear canal. They are bulging sac-like collections of dead skin cells and fluid. These cysts can be quite painful and may block the canal causing hearing loss. Treatment may include warm wet compresses, antibiotics (if infected) and surgical removal in some cases. Most resolve spontaneously. (27 Sep 1997) |
| ear deformities, acquired | Distortion or disfigurement of the ear caused by disease or injury after birth. (12 Dec 1998) |
| ear diseases | Diseases of the ear, general or unspecified. (12 Dec 1998) |
| ear lobe | The lowest part of the auricle; it consists of fat and fibrous tissue not reinforced by the auricular cartilage. Synonym: lobulus auriculae, lobule of auricle. (05 Mar 2000) |
| ear lobe crease | A diagonal crease found on one or both earlobes with a possible connection to coronary heart disease in males. (05 Mar 2000) |
| ear, low-set | A minor anomaly involving an ear situated down below its normal location. Technically, the ear is low-set when the helix (of the ear) meets the cranium at a level below that of a horizontal plane through both inner canthi (the inside corners of the eyes). The presence of 2 or more minor anomalies in a child increases the probability that the child has a major malformation. (12 Dec 1998) |
| ear, malrotated | See Ear, slanted. (12 Dec 1998) |
| ear mange | Disease resulting from heavy infestation with the mite Otodectes cynotis in the ears of dogs, cats, foxes, and other carnivores and manifested by head shaking, continual ear scratching, and ear droop; observed in severe cases are torticollis, circling, epileptoid fits with purulent inflammation and discharge of the external ear, and possible perforation of the tympanic membrane. See: otoacariasis. Synonym: ear mange. (05 Mar 2000) |
| ear neoplasms | Neoplasms of the internal, external, or middle ear. (12 Dec 1998) |
| ear-piercer | <zoology> The earwig. Source: Websters Dictionary (01 Mar 1998) |
| ear pit | Tiny pit in front of the ear: preauricular pit. A minor anomaly of no great consequence in itself. More common in blacks than whites and in females than males. Can recur in families. The presence of 2 or more minor anomalies in a child increases the probability that the child has a major malformation. (12 Dec 1998) |