Lateral neck metastases in the ipsilateral and contralateral compartments of papillary thyroid carcinoma located in one lobe.

Although few patients with PTC located in one lobe have BLNM, the contralateral lateral compartment should be carefully evaluated for BLNM in males and in patients with a primary tumour size >2 cm, aggressive subtype of PTC, central node metastasis and Delphian node metastasis.