| lateral aberrant thyroid carcinoma | <tumour> A cervical nodule of thyroid carcinoma situated outside the thyroid gland, formerly thought to arise from ectopic thyroid tissue but now believed to be metastatic from an occult carcinoma within the gland. (05 Mar 2000) |
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| anaplastic carcinoma of the thyroid | <oncology, tumour> An aggressive form and rare form of thyroid cancer that is one of the most rapidly growing and invasive types of thyroid cancer. It commonly occurs in people over 60 years of age and may cause obstruction of the trachea. The cause is unknown but exposure to radiation may be a factor. Thyroid function tests are usually normal. Hoarse voice, cough and coughing up blood are common symptoms. Examination may reveal nodules in the thyroid gland. Diagnosis is made via biopsy. Treatment is surgical with or without radiation therapy. (27 Sep 1997) |
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| giant cell carcinoma of thyroid gland | A rapidly progressive undifferentiated carcinoma observed in the thyroid gland, characterised by numerous, unusually large, anaplastic cells derived from glandular epithelium of the thyroid gland. (05 Mar 2000) |
| thyroid carcinoma | <radiology> Papillary-follicular (75%), well-differentiated, 95% 5-yr survival with treatment, papillary may lead to neck nodes, follicular may lead to lungs, bone (haematogenous), anaplastic (20%), older patients, prognosis poor, medullary (5%), C cells, associated with pheochromocytoma (MEN-2 and MEN-3) see also: hot and cold nodules on radionuclide studies, risk factors (12 Dec 1998) |
| thyroid carcinoma risk factors | <radiology> Increased risk of malignancy: young female, male, history of radiation to head or neck, hard lesion, other neck masses, no shrinkage on TSH, family hx of thyroid carcinoma see: thyroid carcinoma (12 Dec 1998) |
| aberrant | Wandering or deviating from the usual or normal course. Origin: L. Aberrans (18 Nov 1997) |
| aberrant artery | Artery having an unusual origin or course. (05 Mar 2000) |
| aberrant bile ducts | Small duct's occasionally present in the ligaments of the liver or originating from the surface of the liver. (05 Mar 2000) |
| aberrant bundles | A group, or groups, of fibres from the corticobulbar or corticonuclear tract, directed to each of the motor nuclei of cranial nerves. (05 Mar 2000) |
| aberrant complex | An anomalous electrocardiographic complex, more specifically an abnormal ventricular complex caused by abnormal intraventricular conduction of a supraventricular impulse. (05 Mar 2000) |
| aberrant ducts | The superior or inferior diverticula of the epididymis. Synonym: ductuli aberrantes, aberrant ducts, ductus aberrantes, vasa aberrantes. (05 Mar 2000) |
| aberrant ductules | The superior or inferior diverticula of the epididymis. Synonym: ductuli aberrantes, aberrant ducts, ductus aberrantes, vasa aberrantes. (05 Mar 2000) |
| aberrant ganglion | A collection of nerve cells sometimes found on a posterior spinal nerve root between the spinal ganglion and the spinal cord. (05 Mar 2000) |
| aberrant goiter | Enlargement of a supernumerary thyroid gland. Synonym: struma aberrata. (05 Mar 2000) |
| aberrant haemoglobin | A mutant Hb that functions abnormally. Compare: variant haemoglobin. (05 Mar 2000) |
| aberrant obturator artery | See: pubic branch of inferior epigastric artery. (05 Mar 2000) |