| A>B | air greater than bone [conduction] |
|---|---|
| A&BC | air and bone conduction |
| ABM | adjusted body mass; alveolar basement membrane; autologous bone marrow |
| ABMI | autologous bone marrow transplantation |
| ABMT | American Board of Medical Toxicology; autologous bone marrow transplantation |
| gingival cyst | A cyst derived from remnants of the dental lamina situated in the attached gingiva, occasionally producing superficial erosion of the cortical plate of bone; most are located in the cuspid-premolar region. (05 Mar 2000) |
|---|---|
| parvilocular cyst | A tumour composed of multiple small cyst's. (05 Mar 2000) |
| globulomaxillary cyst | A cyst of odontogenic origin found between the roots of the maxillary lateral incisor and canine teeth. (05 Mar 2000) |
| median anterior maxillary cyst | A cyst in or near the incisive canal, arising from proliferation of epithelial remnants of the nasopalatine duct; the most common maxillary development cyst. Synonym: median anterior maxillary cyst, nasopalatine duct cyst. (05 Mar 2000) |
| median palatal cyst | A developmental cyst located in the midline of the hard palate. (05 Mar 2000) |
| median raphe cyst of the penis | A cyst of the raphe penis resulting from incomplete closure of the urethral groove, becoming clinically evident in childhood or later. (05 Mar 2000) |
| mediastinal cyst | Cysts of one of the parts of the mediastinum: the superior part, containing the trachea, oesophagus, thoracic duct and thymus organs; the inferior middle part, containing the pericardium; the inferior anterior part containing some lymph nodes; and the inferior posterior part, containing the thoracic duct and oesophagus. (12 Dec 1998) |
| pearl cyst | <ophthalmology> A mass of epithelial cells introduced into the interior of the eye by a perforating injury. (21 Jun 2000) |
| vitellointestinal cyst | A small red sessile or pedunculated tumour at the umbilicus in an infant; it is due to the persistence of a segment of the vitellointestinal duct. Synonym: umbilical cyst. (05 Mar 2000) |
| residual cyst | The persistence of an apical periodontal cyst that remains after tooth extraction. (05 Mar 2000) |
| meibomian cyst | An inflammation of the oil gland of the eyelid. Also called a chalazian or a tarsal cyst. (12 Dec 1998) |
| cerebellar cyst | A cyst usually occurring in the lateral cerebellar white matter; often a part of cerebellar astrocytoma. (05 Mar 2000) |
| rete cyst of ovary | A cyst derived from the germinal cords in the hilum of the ovary. (05 Mar 2000) |
| retention cyst | A cyst resulting from some obstruction to the excretory duct of a gland. Synonym: distention cyst, secretory cyst. (05 Mar 2000) |
| cervical cyst | Also called a branchial cleft cyst, this is a cavity that is a remnant from embryologic development present at birth in one side of the neck just in front of the large angulated muscle on either side (the sternocleidomastoid muscle). The cyst may not be recognised until adolescence as it enlarges its oval shape. It may develop a sinus or drainage pathway to the surface of the skin from which mucus can be expressed. Total surgical excision is the treatment of choice. Recurrence is not expected. (12 Dec 1998) |