During the past 35 years, a patient has had four distinct examples of asymptomatic, gross, metastatic thyroid adenocarcinoma, each discovered on a relatively fortuitous basis. He was seeking medical attention for unrelated matters, viz, for an inguinal hernia, after automobile accident, during a routine surgical follow-up examination, and for dry skin, when the metastases in the lymph nodes, lung, axillary skin, and scalp, respectively, were noted and surgically removed. The benignity of these metastatic cancers reflects their location in noncritical sites as well as their extremely slow growth rate.
Shelley WB, Beerman H, Enterline HT. Metastatic Thyroid Carcinoma. JAMA. 1973;226(2):173-174. doi:10.1001/jama.1973.03230020035008