PubMed Health⌕ Search

Biomedical subjects

J A Lynn

Publications and source records attributed to J A Lynn.

At least 19 recordsLinked to original sources
PubMed1986

Imaging of metastatic medullary carcinoma of the thyroid with 131I-meta-iodobenzyl guanidine.

The uptake of 131I-MIBG by medullary carcinoma of the thyroid was studied in six patients after total thyroidectomy in whom persistent raised plasma calcitonin levels were indicative of residual disease. The only patient in whom any activity in a possible metastasis was seen had by far the highest level of circulating calcitonin of the group and in contrast one patient with a presumptive metastatic deposit showed no uptake of MIBG into it. In conclusion the uptake of 131I-MIBG by medullary carcinoma of the thyroid is unreliable and unpredictable.

3-Iodobenzylguanidine↗
PubMed1981

Reoperations for hyperparathyroidism.

During a 20 year period, 27 patients have undergone reoperations for primary hyperparathyroidism. Hypercalcemia has been successfully controlled in 21 of the 27 patients after a total of 64 operations. Reasons for failure at initial exploration included surgical error in 12, multiple gland disease in five, unusual parathyroid gland location in five, carcinoma of the parathyroid gland in two and unknown in three. A variety of techniques were used to localize missing parathyroid glands prior to reoperation. Selective venous sampling was the most helpful but gave correct localizing information in only nine of 18 patients. Postoperatively, hypoparathyroidism was temporary in two patients and permanent in four. Recurrent laryngeal nerve injury was temporary in one patient, permanent and unilateral in two and bilateral in one patient. Reoperations for hyperparathyroidism are associated with increased morbidity and decreased success. Most importantly, failure at the initial operation is preventable in most patients.

Adolescent↗
PubMed1979

Evaluation of tests for predicting the viability of axial pattern skin flaps in the pig.

The viability of axial pattern skin flaps in pigs was assessed by the use of intravenous fluorescein, intradermal injection of 133Xe in saline, intravenous 51Cr tagged red cells, and angiography. The results were correlated with flap survival at 4 days postoperatively. Intravenous fluorescein provided the most accurate method for prediction of viable tissue at the time of operation. There was no evidence of vascular perfusion in the distal portions of these flaps. These axial pattern flaps differed in their viability from similar flaps in humans, and anastomoses between discrete vascular territories were infrequent in pigskin.

Animals↗