A 17 mm nodule is not considered a large nodule. However, the fact that it was not present 3 years ago and is present now, makes it important to be evaluated a pulmonary specialist. The cause of such lesions could be
infectiousInfectious endocarditis
Infectious mononucleosis
Infectious mononucleosis #3,
inflammatoryInflammatory bowel disease
Ulcerative colitis or a tumor. The likelihood of it being one or another of these is dependent in turn on a number of
factorsFactor ix complex including, but not limited to, age, smoker or non-smoker, symptoms or none, geographic exposures etc. With reference to the latter, such nodules are
commonCommon cold in the mid-west (
HistoplasmosisAcute histoplasmosis
Disseminated histoplasmosis
Histoplasmosis
Histoplasmosis, disseminated in hiv patient) and the southwest (Coccidiomycosis). The safest suggestion is for this to be further evaluated.