ASSISTANT: ANESTHESIOLOGIST: PROCEDURES PERFORMED: 1. Conscious sedation for 45 minutes under my direct supervision. 2. CT-guided lung biopsy. PREPROCEDURE DIAGNOSIS: Lung mass. POSTPROCEDURE DIAGNOSIS: guidance. Biopsy, percutaneous, with CT ANESTHESIA: 1. Conscious sedation under my direct supervision for 45 minutes. 2. Location sedation with 1% lidocaine solution without epinephrine in the subcutaneous and subcuticular tissues. DURATION OF PROCEDURE: 45 minutes. INDICATION FOR PROCEDURE: neoplastic process. Lung mass suspicious for CONSENT: Verbal and written consent were obtained after a detailed discussion of the risks and benefits of the procedure including risk of pneumothorax, hemoptysis and other adverse events. TECHNIQUE: The patient was prepped and draped in the usual sterile fashion over a suitable area marked with CT guidance. Local sedation was given with 1% lidocaine solution without epinephrine in the subcutaneous and subcuticular tissues. A small skin incision was made with a #11 blade. Access was gained to the lesion without difficulty with a needle and a specimen was obtained. The specimen was sent for pathological evaluation. Follow-up CT examination was done to exclude pneumothorax. Chest radiographs will be obtained after the procedure. SPECIMENS TO PATHOLOGY: IMPRESSION: Lung aspirate.