Aim: To determined risk of increases Incidence of Thyroid cancer in solitary thyroid nodules so Preoperative distinction between benign and malignant in solitary thyroid nodules is important and helps to avoid unnecessary surgery and its adverse effects, such as hypothyroidism, hypocalcemia, and recurrent nerve injury. Methods: Descriptive perspective analyzed data over a period of 6 years April 2015-April 2021 in Saudi Hospital at Hajjah, Yemen. 226 thyroid operations for 207 patients, 135 patient’s diagnosis as Solitary thyroid nodule and 72 patients as Multi nodular goiter. Patients with a clinically solitary thyroid nodule were included in the study group. Results: 135 cases of clinically detected solitary thyroid nodules, 126 female and 9 male patients, between 14 - 65 years age, median 41 years and mean 39.76 years, (94, 41) patients respectively Right side thyroid effect more than Left side, Fine needle aspiration cytology (FNAC) sensitivity, specificity and accuracy was (61%, 72%, 64%) respectively. Postoperative histopathology reported 100 (74%) patients as having benign thyroid nodules and 35 patients (26%) as having malignant thyroid nodules. Postoperative transient hypocalcemia was observed in 9 patients (7%), and temporary hoarseness was observed in 3 patients (2%). Conclusion: The incidence of malignancy in solitary thyroid nodules is high. Rapid growth by history and hard fixed nodule by examination and hypoechoic, micro calcification and cervical lymphadenopathy on Thyroid Ultrasound frequently in malignant nodules. Male risk factors for thyroid cancer but age, number and size of nodules not included as risk factor. Fine needle aspiration cytology (FNAC) is more helpful for diagnosing if aspiration under Ultrasound guidance and reading by experience histopathologists. The type of surgery depends on preoperative evaluation, including history, examination, ultrasound, fine needle aspiration cytology (FNAC) result, and intraoperative assessment of the nodule. There are fewer complications of thyroid surgery by experienced surgeons.
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