Tumor-to-tumor Metastases: Papillary Renal Cell Carcinoma into A Papillary Thyroid Carcinoma: A Case Report

Abstract

Thyroid malignancies are commonest endocrine malignancy. It can be primary, can be secondary also.Though secondary thyroid malignancies are rare it happens sporadically from kidney, skin, breast andhead-neck tumor. Here we described a case of metastatic papillary thyroid carcinoma. This case wasdiagnosed as a case of papillary cell carcinoma of left kidney 18 months back, underwent radical nephrectomyand received a course of Tyrosine Kinase Inhibitor also and remain symptom free for one year. Thenpresented to us with thyroid swelling along with cervical lymphadenopathy. J MEDICINE 2022; 23: 77-81