Thyroid Ca causes laryngeal paralysis due to
The nerves found in close relationship to the thyroid gland and therefore likely to be involved in the malignant spread and thyroid surgery are recurrent laryngeal nerve and the superior laryngeal nerve. Ref : Schwaz Surgery 9/e p1346
Recurrent laryngeal nerve palsy
Vagus nerve palsy
Glossopharyngeal nerve palsy
Hypoglossal nerve palsy
Endocrinology and breast