Benign tumours

Benign tumours

Follicular adenomas present as clinically solitary nodules us ( Figure 55.21 ) and the distinction between a follicular - carcinoma and an adenoma can only be made by histological examination; in the adenoma there is no invasion of the capsule or of pericapsular blood vessels. For this reason, FNA, which provides cytological detail but not tissue architecture, cannot di ff erentiate between benign and malignant follicular lesions. Diagnosis and treatment is, therefore, by wide excision, i.e. total lobectomy . The remaining thyroid tissue is normal so that prolonged follow-up is unnecessary . - Benign tumours

Follicular adenomas present as clinically solitary nodules us ( Figure 55.21 ) and the distinction between a follicular - carcinoma and an adenoma can only be made by histological examination; in the adenoma there is no invasion of the capsule or of pericapsular blood vessels. For this reason, FNA, which provides cytological detail but not tissue architecture, cannot di ff erentiate between benign and malignant follicular lesions. Diagnosis and treatment is, therefore, by wide excision, i.e. total lobectomy . The remaining thyroid tissue is normal so that prolonged follow-up is unnecessary . -