Our findings indicate that malignancy, lymph node dissection, and metastatic nodal disease are risk factors for IP. Patients with IP were more likely to have postoperative biochemical and symptomatic hypocalcemia than controls, showing that there is a physiologic consequence to IP. Additionally, intraoperative surgeon identification of parathyroid glands results in a lower incidence of IP, highlighting the importance of awareness of parathyroid anatomy during thyroid surgery.

Diabetes was found concurrently with pheochromocytoma in 23% of patients, more often in those with large, symptomatic tumors. The majority of patients had long-term resolution of diabetes after successful resection; however, some patients may continue to require treatment of diabetes after operation, especially those with a higher BMI.

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Of 30 patients, one patient was found to have multifocal biliary strictures requiring two biliary stents on endoscopic retrograde cholangiopancreatography five months post procedure (n ¼ 1, 3.3%). Two patients demonstrated grade 3/4 bilirubin toxicity (n ¼ 2, 6.7%). The average treatment dosage was 135 Gray (range, 95-341 Gy). Compared to the biliary complication rate described in the literature for HCC with 2.1% for biliary findings on imaging and 6.8% for grade 3/4 bilirubin toxicity 2 , our study showed comparable rates of 3.3% and 6.7%, respectively. Conclusions: Yttrium-90 radioembolization of segment IV HCC demonstrated no significant difference in biliary complication rates compared to nonsegment specific biliary complication rates reported in the literature.

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