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Vitamin D plays a crucial role in calcium metabolism through the parathormone-dependent process. The deficiency of this important nutrient may be associated with hypocalcemia after thyroidectomy. To evaluate the role of vitamin D in predicting hypocalcemia following total thyroidectomy. In this study, sixty-two patients who underwent total thyroidectomy for benign or malignant thyroid disease were included in this prospective study. Preoperative vitamin D serum levels and parathormone (PTH) levels were determined. The association between preoperative vitamin D status and the development of hypocalcemia was investigated. In this study, 62 patients were evaluated. The mean age of the subjects was 47 years. Of the 62 patients studied, of which 9 were male patients (14.5%), and 53 were female (85.5%), the results of our study showed. In both groups with and without vitamin D deficiency, calcium levels decreased significantly (P=0.01). In our study, it was found that there was no significant relationship between postoperative hypocalcemia and vitamin D deficiency. (P=0.441). After reviewing the data and according to Spearman correlation statistical test, no significant relationship was observed between serum parathyroid hormone (PTH) and calcium after thyroidectomy (P=0.340). Vitamin D deficiency is a risk factor of hypocalcemia after total thyroidectomy for benign goiter. Although post thyroidectomy hypocalcemia is multifactorial, vitamin D deficiency, particularly severe form, is significantly associated with the development of biochemical and clinical hypocalcemia. Vitamin D supplementation can prevent this unwanted complication in such patients. [ABSTRACT FROM AUTHOR]

Primary simultaneous multiple organs teratomas are extremely rare. They usually arise in the gonads, and only 1–3 % of them arise in the mediastinum. We present a case of simultaneous multiple organs immature teratomas who was admitted to Razi hospital because of cough, dyspnea, and left-side supraclavicular mass. Computed tomography (CT) showed a big mass with multiple high densities, nodular, semi-solid, heterogenic structures on the left side of the neck, left-side anterior mediastinum, right-side middle mediastinum and right-side suprarenal region. CT-guided needle biopsy was performed and histopathological study showed immature teratoma. After performing neoadjuvant therapy, the tumors were removed. The patient underwent chemo radiation therapy on the mediastinum and abdomen. On 6-months follow-up, he was asymptomatic. This case is being reported because of the rarity of multiple organs immature teratomas and informing other clinicians about managing these cases. [ABSTRACT FROM AUTHOR]