Comparison Between Two Techniques During Thyroidectomy (Conventional Dissection Technique and Injection of Methylene Blue Dye Into Inferior Thyroid Artery Technique) Regarding Recurrent Laryngeal Nerve Identification and Preservation

Inclusion Criteria: * All patients who present with simple nodular goiter, solitary thyroid nodule, controlled toxic goiter and failed medical treatment with indication for thyroidectomy. * Patents undergoing primary surgery (not recurrent). * Patients who are willing to undergo surgery under general anesthesia without any preoperative complications or major diseases. * Either gender in the age group of 18-60 years Exclusion Criteria: * Previous thyroid surgery. * Malignant goiter. * Major cardiac diseases, renal diseases or patients who are unfit for surgery. * Methylene blue allergies. * Pregnancy. * Patients who refuse to participate in the study. * Presence of any preoperative cord pathology or patients with dysphonia.