Hypoparathyroidism secondary to surgery for carcinoma of the pharynx and larynx.

Hypoparathyroidism occurs secondary to surgery for carcinoma of the pharynx and larynx in which a total thyroidectomy is required. The indications for partial and total thyroidectomy are presented. Hypoparathyroidism is an important and complex problem with the clinical presentation ranging from tetany to latent chronic hypoparathyroidism. Serum calcium, phosphate, magnesium, and protein levels are important parameters to monitor. A therapeutic strategy is presented and its complications are discussed. The role of magnesium in calcium metabolism is emphasized.