title: An evanescent malignancy--resembling colonic mass: probably due to visceral gnathostomiasis.
mesh_terms: D000293:Adolescent; D003108:Colonic Diseases / Q000175:diagnosis*; D003110:Colonic Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006039:Gnathostoma; D006801:Humans; D009349:Nematode Infections / Q000175:diagnosis*