6 Metastatic Calcification of the Kidney due to high circulating calcium. In this case the hyper-production of parathormone was due to Parathyroid Carcinoma. Trabecular growth pattern with mitoses. Positive nodes Local recurrence following resection. The tumors are usually attached, firmer than adenomas.
Patients usually survive for many years, few patients die from hyperparathyroidism.
Mostly from chief cell hyperplasia. Most glands are enlarged but enlargement may be asymmetric. Hyperplasia may be nodular making the diagnosis of adenoma difficult. Clear cell hyperplasia is composed of cells with many small vacuoles. 7 Gross Image of Hyperplastic glands compared to atrophic gland in a case of hyperparathyroidism.