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Biomedical subjects

K Lockwood

Publications and source records attributed to K Lockwood.

At least 37 records · Page 2Linked to original sources
PubMed1976

Comparative study of ultrasound, 131I-19-iodocholesterol scintigraphy, and aortography in localising adrenal lesions.

Twenty-seven consecutive patients with endocrinological disease necessitating adrenal surgery underwent blind preoperative investigation with ultrasound, renal aortography, and adrenocortical scintigraphy for an adrenal lesion. Nine patients had pituitary-dependent Cushing's syndrome, five had pituitary-independent Cushing's syndrome, four had an adrenocortical androgenic excess, and nine had a preoperative diagnosis of phaeochromocytoma. The predictive value of preoperative ultrasound was 100% for a positive finding and 79% for a negative result. Preoperative aortography had a predictive value of 83% for a positive finding and 64% for a negative result; and the predictive value of adrenocortical scintigraphy was 100% for a positive finding and 85% for a negative finding. In localising biochemically suspected adrenal lesions ultrasound should be the first choice, since it is rapid, noninvasive, cheap, and reasonably accurate. Adrenocortical scintigraphy has a similar diagnostic value, especially in Cushing's syndrome, but it is time consuming. Nevertheless, it may be preferable for diagnosing small glucocorticoid-secreting adenomas. Aortography should be reserved for cases with inconclusive diagnoses and suspected extra-adrenal phaeochromocytomas.

Adolescent↗
PubMed1975

Arteriographic exposition of the parathyroids.

Arteriographic exposition of the parathyroids in 52 patients consecutively referred for primary hyperparthyroidism is reported. Thirty-nine patients under-went neck exploration. In 29 patients pathologic parathyroids were found. The arteriographic evaluation was based on observation of the course of the inferior thyroid artery and the presence of parenchymal opacification. Comparison of arteriography and surgical findings revealed that selective angiograpy of the inferior thyroid artery had a high sensitivity and specificity in the detection of pathologic parathyroids far exceeding that of a non-selective technique.

Adult↗