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A case of ectopic parathyroid gland hyperplasia in the pyriform sinus
Akira Fukumoto1, Manabu Nonaka, Tomonobu Kamio
1Department of Otolaryngology, Chiba Hokusoh Hospital, Nippon Medical School, 1715 Kamakari, Inba-mura, Inba-gun, Chiba 270-1694, Tokyo, Japan.
Archives of Otolaryngology--Head & Neck Surgery
|January 12, 2002
Abstract:
Variability in the location of parathyroid glands is well recognized. There are usually 4 parathyroid glands located in the area of the thyroid gland, but embryologically, they may be found anywhere from the angle of the jaw to the pericardium. We report a case of an ectopic parathyroid gland in the pyriform sinus. It appeared as a tumorous lesion in the pyriform sinus owing to progress of secondary hyperparathyroidism.