Metachronous thyroid metastasis of primary rectal adenocarcinoma

Summary Thyroid metastases occur frequently from lung, breast and renal cancer, with an overall incidence of 1.25% to 24.2% reported in autopsy studies (Shimaoka et al, 1961; Czech et al, 1982). Only a few cases of colorectal cancer metastatic to the thyroid have been reported to date. We describe the case of a 60-year old man who underwent right hemithyroidectomy with laterocervical lymph node dissection for a thyroid metastasis from a previous rectal adenocarcinoma surgically treated 11 years before.