Purpose The true association between primary hyperparathyroidism (PHPT) and pancreatitis continues to be controversial. In this study, we present clinical data, investigative profile, management and follow-up of PHPT patients with pancreatitis and compare this group with PHPT patients without pancreatitis. Methods Records of 242 patients with PHPT managed at our center over 24 years were retrospectively analyzed for demographic and laboratory data. The diagnosis of pancreatitis was entertained in the presence of at least two of the three following features: abdominal pain, levels of serum amylase greater than three times the normal or characteristic features at imaging. Results Fifteen (6.19) of the 242 consecutive patients with PHPT had had pancreatitis. Fourteen patients (93.3) had acute pancreatitis (AP), while one patient had chronic calcific pancreatitis. Over half (8 of 14) of the patients with AP had at least two episodes of pancreatitis. Pancreatitis was the presenting symptom in 14 (93.3) patients. None of the pancreatitis cases had additional risk factors for pancreatitis. PHPT patients with pancreatitis had significantly higher serum calcium and ALP than PHPT patients without pancreatitis. After successful parathyroidectomy, 14 patients had no further attacks of pancreatitis during a median follow-up of 16 months (range 2-41 months), while recurrence of pancreatitis was seen in one patient. Conclusions We conclude that pancreatitis can be the only presenting complaint of PHPT. Our study highlights the importance of fully investigating for PHPT in any pancreatitis patient with high normal or raised serum calcium level, especially in the absence of other common causes of pancreatitis.
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