title: Pseudo-pseudo-pseudotumor of the lung.
abstract: Benign lesions may simulate bronchogenic carcinoma by virtue of radiologic appearance or false-positive cytologic studies. A lung opacity initially suspected to be malignant was, on review, considered to be a loculated effusion. Needle biopsy yielded cells which appeared malignant. The resected lesion was a benign infarct.
mesh_terms: D001707:Biopsy, Needle; D002283:Carcinoma, Bronchogenic / Q000175:diagnosis; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D005189:False Positive Reactions; D006801:Humans; D007238:Infarction / Q000175:diagnosis*; D008168:Lung / Q000098:blood supply*; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed