Pseudoidiopathic hypoparathyroidism: report of a case and review of the literature in Japan.

A case of pseudoidiopathic hypoparathyroidism is described. The patient, 47-year-old male, developed numbness and muscle spasms in the extremities in July 1980. Physical and laboratory examinations revealed positive Chvostek and Trousseau's signs, hypocalcemea, mild hyperphosphatemia, normal serum magnesium, prolongation of QTc on EKG, normal reaction to Ellsworth-Howard test and high levels of serum PTH. Treatment with calcium lactate and vitamin D was successful. The literature regarding 16 cases reported in Japan was reviewed.