Individuals with IMT present with a wide range of symptoms (e.g. pain, swelling, a mass, organ dysfunction, etc.) depending on the tumor location(s). Up to 1/3 of these individuals have symptoms of systemic inflammation such as fever, chills, night sweats, and weight loss. Rare cases of IMT have developed in individuals with: a) organizing pneumonia; b) infection by Mycobacterium avium intracellulare or Corynebacterium equi (pneumonia-causing bacteria); Campylobacter jejuni (causes gastroenteritis); Lysinibacillus sphaericus (previously termed Bacillus sphaericus, a rare cause of lung infections and sepsis); Coxiella burneti (causes Q fever); Epstein–Barr virus (causes infectious mononucleosis and Epstein–Barr virus-associated lymphoproliferative malignant diseases); and E. coli-related occlusive phlebitis of intrahepatic veins; or c) previous abdominal surgery; trauma; ventriculoperitoneal shunt in the brain; radiation therapy; and corticosteroid usage. The relationship (i.e. cause or merely association) of these disease relationships to IMT is unknown.
