• Estrogen receptor protein was found in 24% of colonic neoplasms. Presence of estrogen receptor activity was independent of age or sex of the patient, state of differentiation or spread of the tumor, and concentration of carcinoembryonic antigen in the tumor. Estrogen receptor activity in colon tumors probably reflects novel protein synthesis resulting from dedifferentiation. Measurement of tumor estrogen receptor protein and carcinoembryonic antigen may have discriminatory value in the patient with metastatic adenocarcinoma and an unknown primary neoplasm.
(Arch Surg 112:240-241, 1977)
McClendon JE, Appleby D, Claudon DB, Donegan WL, DeCosse JJ. Colonic NeoplasmsTissue Estrogen Receptor and Carcinoembryonic Antigen. Arch Surg. 1977;112(3):240-241. doi:10.1001/archsurg.1977.01370030012002