In April 2018, a 47-year-old woman came to our attention for dyspnea and tachycardia under exertion. An x-ray of the chest showed a large mass in the left hemithorax. A CT scan with enhancement presented a 40 x30 cm mass involving the left upper lobe of the lung. A CT guided biopsy gave a diagnosis of benign lung tumor. An Emission Tomography - Computed Tomography (PET/CT) scan showed a very mild uptake at the level of the nodule (SUV max = 2.3) with no other signs of uptake in other parts of the body (Figure 1).
For the symptomatology and the dimension of the mass, the patient underwent a left upper lobectomy through lateral thoracotomy. The final histology showed an IMT of the lung. The cells were positive for actin in smooth muscle, although negative for ALK, MNF116, and estrogenic receptors, as well as for tuberculosis.
Patient underwent a clinical check ten days after surgery by the oncologist who suggested a period of follow up every 6 months for the first and second year from surgery, and every year after the second year, for a total of 5 years of radiological and clinical monitoring.