Observations on the pyramidal lobe of the thyroid gland.
Thyroid glands were studied during surgery in 17 patients and the records of a further 53 patients who had undergone thyroidectomy were reviewed to establish the incidence of the pyramidal lobe. It was found to be present in 60 - 65% of subjects (usually being situated on the left side), and should therefore be regarded as a normal component of the thyroid gland and not as a congenital abnormality. In patients with diffuse disease of the gland the lobe is always involved.
D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009929:Organ Size; D013961:Thyroid Gland / Q000033:anatomy & histology* / Q000473:pathology; D013965:Thyroidectomy