Parathyroid adenomas studied by digital subtraction angiography.

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Abstract
Patients (18) who had elevated serum Ca and parathormone levels were prospectively studied with i.v. digital subtraction angiography (DSA). I.v. DSA of the neck and mediastinum was performed in the anteroposterior, the left anterior and the right anterior oblique projections. The study was considered positive if an abnormal blush or blood supply was noted. Upon operation, 14 patients were confirmed to have parathyroid adenomas, of whom 5 had positive preoperative DSA examinations. Four patients were followed medically (3 negative DSA, 1 positive DSA). A positive i.v. DSA may be useful to guide neck explorations for parathyroid adenomas. However, the low sensitivity of the study may limit its screening potential.