| PSP | pancreatic spasmolytic peptide; paralytic shellfish poisoning; parathyroid secretory protein; period... |
|---|---|
| PT | pain threshold; parathormone; parathyroid; paroxysmal tachycardia; part time; patient; pericardial t... |
| PTF | patient treatment file; plasma thromboplastin factor; posterior talofibular [ligament]; proximal tub... |
| PTL | peritoneal telencephalic leukoencephalomyopathy; pharyngotracheal lumen; plasma thyroxine level post... |
| PTM | posterior trabecular meshwork; posttransfusion mononucleosis; post-traumatic meningitis; prothymosin... |
| posterior mediastinal mass | <radiology> Mnemonic: HALOVEEN, haematoma, abscess, lymph nodexs, osteophyte, vertebral (metastasis, plasmacytoma), extramedullary haematopoesis, oesophagus, neurogenic (12 Dec 1998) |
|---|---|
| posterior mediastinum | Lies between the pericardium and the vertebral column, below the level of the T4/5 intervertebral disc. It contains the descending aorta, thoracic duct, oesophagus, azygos veins, and vagus nerves. Synonym: mediastinum posterius, postmediastinum. (05 Mar 2000) |
| posterior medullary velum | A thin sheet of white matter, hidden by the cerebellar tonsil, attached along the peduncle of the flocculus and, at and near the midline, to the nodulus of the vermis; it is continuous caudally with the epithelial lamina and choroid plexus of the fourth ventricle. Synonym: velum medullare inferius, posterior medullary velum, Tarin's valve, valvula semilunaris tarini, velum semilunare, velum tarini. (05 Mar 2000) |
| posterior meningeal artery | <anatomy, artery> Origin, ascending pharyngeal; distribution, dura mater of posterior cranial fossa; anastomoses, branches of middle meningeal and vertebral. Synonym: arteria meningea posterior. (05 Mar 2000) |
| posterior meniscofemoral ligament | <anatomy> The band that passes posterior to the posterior cruciate ligament extending between the medial condyle of the femur and the posterior crus of the lateral meniscus. Synonym: ligamentum meniscofemorale posterius, ligamentum cruciatum tertium genus, ligamentum menisci lateralis, Wrisberg's ligament. (05 Mar 2000) |
| posterior myocardial infarction | Infarction involving the posterior wall of the heart; also formerly used erroneously of infarction's involving the inferior or diaphragmatic surface of the heart. (05 Mar 2000) |
| posterior naris | The opening into the nasopharynx of the nasal cavity on either side. Synonym: isthmus pharyngonasalis, posterior naris, postnaris. Origin: Mod. L. Fr. G. Choane, a funnel (05 Mar 2000) |
| posterior nasal spine | The sharp posterior extremity of the nasal crest of the hard palate. Synonym: spina nasalis posterior, posterior palatine spine. (05 Mar 2000) |
| posterior neck region | The back of neck, including the suboccipital region. Synonym: regio nuchalis, nuchal region, posterior neck region, regio cervicalis posterior. (05 Mar 2000) |
| posterior nephrectomy | Retroperitoneal removal of a kidney through an incision in the posterior lumbar muscles, usually with the patient in a prone position. (05 Mar 2000) |
| posterior neuropore | The temporary opening at the extreme caudal end of the neural tube in early embryos; closes at the 25th somite stage. Synonym: posterior neuropore. (05 Mar 2000) |
| posterior notch of cerebellum | A narrow notch between the cerebellar hemispheres posteriorly, occupied by the falx cerebelli. Synonym: incisura cerebelli posterior, marsupial notch, posterior notch of cerebellum. (05 Mar 2000) |
| posterior occipitoaxial ligament | A gelatinous membrane, attached to the bony spiral lamina, which overlies the hair cells within the cochlea of the inner ear. (12 Dec 1998) |
| posterior occlusion | The most effective contact of the molar and bicuspid teeth of both jaws which allows for all the natural movements of the jaws essential to normal mastication and closure. Synonym: posteroclusion. (05 Mar 2000) |
| posterior palatal seal | The seal at the posterior border of a denture. See: posterior palatal seal area. Synonym: palatal seal, post dam, postdam, postpalatal seal. (05 Mar 2000) |