Calcium2026-10

[The 520th case: neck swelling, hypocalcemic convulsions, and spontaneous hemorrhage of a cystic parathyroid adenoma].

Chen Y S, Wang L N, Jin J, Zeng X Y et al. — Zhonghua nei ke za zhi

Summary

This case study describes a young man who developed severe calcium deficiency, leading to convulsions and bone weakening, due to a rare complication of an overactive parathyroid gland. The parathyroid gland, which regulates calcium levels, developed a bleeding cyst, causing a sudden drop in his blood calcium. Surgical removal of the affected gland successfully restored his calcium balance and resolved his symptoms.

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Key points

The parathyroid glands are crucial for regulating calcium levels in the body.
An overactive parathyroid gland can lead to various health problems, including bone weakness.
A rare complication, like bleeding within a parathyroid tumor, can cause a sudden and dangerous drop in blood calcium.
Prompt diagnosis and treatment, often surgical, can restore calcium balance and alleviate severe symptoms.

What the study looked at

This study investigated a rare medical case where a young man experienced severe symptoms due to a sudden, dramatic drop in his body's calcium levels. It's a single case report detailing the medical journey of a 33-year-old man. Doctors observed his symptoms, conducted various tests including blood work, bone density scans, and imaging of his neck, to pinpoint the underlying cause. They discovered he had an overactive parathyroid gland, which typically causes high calcium, but a rare complication—a bleeding cyst within the gland—led to a sudden, severe calcium deficiency. This deficiency caused convulsions and weakened bones. Surgical removal of the problematic gland successfully normalized his calcium levels and resolved his health issues.

Dietary takeaway

This case highlights the critical role of the parathyroid glands in maintaining healthy calcium levels, which are essential for strong bones and proper nerve and muscle function. While this specific complication is rare, it underscores that severe calcium imbalances can have serious health consequences. Ensuring adequate calcium intake through diet, along with sufficient vitamin D, supports overall bone health, but remember that complex medical conditions require professional diagnosis. This single case study provides valuable insights but isn't definitive for general dietary advice.

Abstract

A 33-year-old man was admitted with a 4-day history of neck swelling and intermittent convulsions for 3 days. Physical examination revealed a soft, tender nodule measuring~4 cm×3 cm in the right lobe of the thyroid gland. Chvostek's and Trousseau's signs were positive. Laboratory tests revealed hypocalcemia, normal serum phosphorus and magnesium levels, elevated parathyroid hormone (PTH) levels, and reduced vitamin D levels. Bone turnover markers indicated active bone formation, and bone density testing revealed severe osteoporosis. Neck ultrasound and CT suggested a thyroid-origin mass; however, Tc-MIBI parathyroid scintigraphy was negative. A review of the previous thyroid ultrasound of the patient revealed a hypoechoic nodule on the dorsal side of the right lobe suspected to represent a parathyroid adenoma, along with elevated blood calcium levels. Combined with the significantly elevated PTH levels detected in the aspirate from the neck mass, these findings led to a final diagnosis of primary hyperparathyroidism, cystic degeneration and hemorrhage of a parathyroid adenoma, hungry bone syndrome, secondary osteoporosis, and vitamin D deficiency. After correcting the hypocalcemia, the patient underwent endoscopic resection of the parathyroid lesion. Postoperatively, serum PTH levels decreased significantly, blood calcium levels normalized, and no further convulsions occurred.

View on PubMed →DOI: 10.3760/cma.j.cn112138-20260213-00092