Formation of a firm impassable mass of stool in the RECTUM or distal COLON.
Radiographic examination of the process of defecation after the instillation of a CONTRAST MEDIA into the rectum.
Infrequent or difficult evacuation of FECES. These symptoms are associated with a variety of causes, including low DIETARY FIBER intake, emotional or nervous disturbances, systemic and structural disorders, drug-induced aggravation, and infections.
Radiographic visualization of the body between the thorax and the pelvis, i.e., within the peritoneal cavity.
A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures.