title: Adenocarcinoma of the colon associated with sarcoidosis.
abstract: Lymph node swelling in the setting of malignancy generally suggests metastasis of the primary tumor. Here, we describe a patient with adenocarcinoma of the colon with regional and systemic lymph node enlargement that resulted from sarcoid reaction, not metastasis. Interestingly, sarcoidosis regressed after treatment of colon cancer. The literature is reviewed and possible mechanisms are explained.
authors.affiliation: Digestive Disease Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Mohamadnejad
authors.forename: Mehdi
authors.initials: M
authors.lastname: Babai
authors.forename: Ali
authors.initials: A
authors.lastname: Bidari
authors.forename: Reza
authors.initials: R
authors.lastname: Malekzadeh
authors.forename: Seyed Mohamad
authors.initials: SM
authors.lastname: Tavangar
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy / Q000601:surgery; D003110:Colonic Neoplasms / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy / Q000601:surgery; D005260:Female; D006801:Humans; D008875:Middle Aged; D012507:Sarcoidosis / Q000188:drug therapy / Q000209:etiology* / Q000601:surgery