Tornwaldt's cyst.The development of a cyst cyst (sist) 1. bladder. 2. an abnormal closed epithelium-lined cavity in the body, containing liquid or semisolid material. 3. a stage in the life cycle of certain parasites, during which they are enveloped in a protective wall. in the nasopharyngeal bursa bursa of Achilles tendon one between the calcaneal tendon and the back of the calcaneus. anserine bursa one between the tendons of the sartorius, gracilis, and semitendinosus muscles, and the tibial collateral ligaments. Calori's bursa one between the trachea and the arch of the aorta. (Tornwaldt's cyst) occurs in about 3% of the population. It is the result of persistent embryonic communication between the anterior tip of the notochord 1. A flexible rodlike structure that forms the main support of the body in the lowest chordates; a primitive backbone. 2. A similar structure in embryos of higher vertebrates, from which the spinal column develops. no and the nasopharyngeal epithelium. This communication usually disappears during the second month of gestation. [1] Tornwaldt's cyst is located at the midline mid·line (m to·chord al adj. dl n)n. of the posterior nasopharynx naso·pha·ryngeal (-f -rn. It has an epithelial lining and a nasopharyngeal mucosal coverage. The cyst is often asymptomatic a·symp·to·mat·ic ( smp-t-m, and it is usually discovered incidentally on imaging, as it was in the case presented here (figure). Tornwaldt's cysts occasionally become infected and can cause eustachian eu·sta·chian (y -stshn, -sh tube dysfunction. From the Department of Radiology, MacNeal Hospital, Berwyn, Ill. Reference (1.) Miyahara H, Matsunaga T. Tornwaldt's disease. Acta Otolaryngol Suppl (Stockh) 1994;517:36-9. |
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