Case report: maldescent of the thymus in a hypoparathyroid infant with Pharyngeal Pouch Syndrome.

The clinical and pathological findings in a 6-month-old boy with III-IV pharyngeal puoch syndrome are reported. The infant had multiple congenital anomalies including absence of the parathyroid glands, maldescent of the thymus, aberrant right subclavian artery and dysfunction of the glossopharyngeal nerve. Because of persistence of the thymus in the cervical area, a thymic shadow was not found on roentgenographic examination of the anterior mediastinum. The weight and histology of the thymus were normal, as were studies of humoral and cellular immunity.