[Patient with relapsed hyperparathyroidism and neck swelling].

72-year-old woman with a history of primary hyperparathyroidism, for which she underwent surgery years previously, went to see her general practitioner because of a swelling in her neck that had been present for a few months and was growing in size. Other than this she had no symptoms. During the physical examination a solid elastic, non-fixed swelling with a diameter of about 3 cm was palpable on the right of the neck, medially to the sternocleidomastoid muscle.