23 January 2026
: Case report 
Severe Hypocalcemia in Hungry Bone Syndrome After Parathyroid Surgery: A Case Study and Review
Challenging differential diagnosis, Diagnostic / therapeutic accidents, Unusual setting of medical care, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)
Wojciech Matuszewski
ABDEF 1*, Michał Szklarz ABDF 1, Jan Górny CF 1, Bernard Kordas BC 2, Joanna Rutkowska DF 1, Judyta Juranek ACD 2
DOI: 10.12659/AJCR.950046
Am J Case Rep 2026; 27:e950046
Table 1 Results of laboratory tests during hospitalization.
| Laboratory parameter (N) | July 1, 2022 (day of admission to hospital) | July 07, 2022 | July 14, 2022 | July 29, 2022 (day of discharge from hospital) | October 20, 2022 |
|---|---|---|---|---|---|
| Ca mmol/l (2.195–2.545) | 0.923 | 1.297 | 1.447 | 2.071 | 2.295 |
| Ca 2+ ionized mmol/l (1.12–1.32) | 1.0 | 0.85 | 0.9 | 1.03 | – |
| Albumin g/l (32.0–52.0) | 34.3 | – | – | 39.5 | 46.4 |
| Total protein g/dL (6.6–8.7) | 5.22 | 5.2 | – | 5.5 | – |
| P mg/dl (2.5–4.5) | 5.5 | 3.8 | 4.7 | 5.9 | 4.3 |
| Mg mg/dL (1.6–2.6) | 1.2 | 2.2 | – | 2.6 | – |
| ALP U/L (25–104) | 1046.0 | 762.0 | 663.0 | 806.0 | 499.0 |
| Creatinine mg/dL (0.5–0.9) | 1.4 | 1.3 | 1.3 | 1.3 | 1.2 |
| PTH pg/mL (14.9–56.9) | 34.0 | 28.6 | 42.9 | 46.6 | 49.0 |
| Vitamin D ng/mL (30–50) | 35.0 | – | 35.0 | – | 38.0 |