[Usefulness of the percutaneous marking method with a coil (PMMC) for the localization of small pulmonary nodules]

We surgeons have always encountered difficulty in localizing small pulmonary nodules, measuring less than 5 mm in diameter, through palpation during operation. In order to solve such a problem, we devised a new method of localizing small pulmonary nodules by applying a technique of CT-guided needle biopsy; namely, metallic spring coil is implanted through a 16 G eraster needle, the tip of which has been placed near the lesion. Our method not only secures the resection of entire lesions, but reduces an amount of lung resection through a small incision (mini-thoracotomy) as well. Furthermore, this method is also thought to be useful for open lung biopsy of pulmonary nodules, measuring less than 1 cm in diameter, in saving time and reducing an amount of lung tissue collection. In case of cystic lesion which is thought to be difficult to palpate on operation, this method can also be useful for its resection.