| MSB | Master of Science in Bacteriology; mid-small bowel; most significant bit |
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| NSCLC | non-small-cell lung cancer |
| SACH | small animal care hospital; solid ankle cushioned heel |
| SAD | Scale of Anxiety and Depression; seasonal affective disorder; Self-Assessment Depression [scale]; se... |
| SAO | small airway obstruction; splanchnic artery occlusion; subvalvular aortic obstruction |
| lymphoma, small cleaved-cell, follicular | A low-grade malignant lymphoma of predominantly follicular pattern. Follicles are of relatively uniform size and shape and the cells are usually somewhat larger than normal lymphocytes. Nuclei are irregular with prominent indentations and cytoplasm can rarely be identified. Cells exhibiting these characteristics are often called centrocytes. (12 Dec 1998) |
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| lymphoma, small lymphocytic | A low-grade malignant lymphoma that may, in some cases, be considered histologically identical to chronic lymphocytic leukaemia (cll; leukaemia, lymphocytic, chronic). It is diffuse in pattern, representing the neoplastic proliferation of well-differentiated B-lymphocytes. In patients with immunoglobulin gammopathies, the lymphocytes may exhibit plasmacytoid characteristics. (12 Dec 1998) |
| lymphoma, small noncleaved-cell | A high-grade malignant lymphoma that includes both burkitt tumour (burkitt lymphoma) and other lymphomas previously designated undifferentiated non-burkitt type. Nuclei in burkitt tumour are round to ovoid and uniform in size. The non-burkitt type exhibits greater nuclear variation and less evidence of cellular maturation with a correspondingly lesser degree of differentiation. (12 Dec 1998) |
| accessory cephalic vein | <anatomy, vein> A variable vein that passes along the radial border of the forearm to join the cephalic vein near the elbow. Synonym: vena cephalica accessoria. (05 Mar 2000) |
| accessory hemiazygos vein | <anatomy, vein> Formed by the union of the fourth to seventh left posterior intercostal veins, passes along the side of the bodies of the fifth, sixth, and seventh thoracic vertebrae, then crosses the midline behind the aorta, oesophagus, and thoracic duct, and empties into the azygos vein, sometimes in common with the hemiazygos vein. Synonym: vena hemiazygos accessoria, vena azygos minor superior. (05 Mar 2000) |
| accessory vertebral vein | <anatomy, vein> A vein that accompanies the vertebral vein but passes through the foramen of the transverse process of the seventh cervical vertebra and opens independently into the brachiocephalic vein. Synonym: vena vertebralis accessoria. (05 Mar 2000) |
| accompanying vein | A vein accompanying another structure. Synonym: accompanying vein, companion vein. (05 Mar 2000) |
| accompanying vein of hypoglossal nerve | Runs with the hypoglossal nerve below and lateral to the hyoglossus muscle, emptying usually into the lingual vein. Synonym: accompanying vein of hypoglossal nerve. (05 Mar 2000) |
| angular vein | <anatomy, vein> A short vein at the medial angle of the eye, formed by the supraorbital and supratrochlear veins's and continuing as the facial vein. Synonym: vena angularis. (05 Mar 2000) |
| anterior auricular vein | <anatomy, vein> One of several veins draining the auricle and acoustic meatus and emptying into the retromandibular vein. Synonym: vena auricularis anterior, vena preauricularis. (05 Mar 2000) |
| anterior cerebral vein | <anatomy, vein> A small vein that parallels the anterior cerebral artery and drains into the basal vein. Synonym: vena cerebri anterior. (05 Mar 2000) |
| anterior facial vein | <anatomy, vein> A continuation of the angular vein at the medial angle of the eye. It passes diagonally downward and outward, joining with the retromandibular vein below the border of the lower jaw before emptying into the internal jugular vein. Synonym: anterior facial vein, vena facialis anterior, vena facialis. (05 Mar 2000) |
| anterior jugular vein | <anatomy, vein> It arises below the chin from veins draining the lower lip and mental region, descends the anterior portion of the neck superficially, and terminates in the external jugular vein at the lateral border of the scalenus anterior muscle. Synonym: vena jugularis anterior. (05 Mar 2000) |
| anterior pontomesencephalic vein | A vein in the midline of the interpeduncular fossa on the superior and anterior aspects of the pons; it communicates with the basal vein superiorly and the petrosal vein inferiorly. Synonym: anterior pontomesencephalic vein. (05 Mar 2000) |
| anterior vein of septum pellucidum | Vein draining the anterior part of the transparent septum; it empties into the superior thalamostriate vein. Synonym: vena septi pellucidi anterior. (05 Mar 2000) |