The very first step would be to undergo a chest X-ray or perhaps a CT scan (computed chest tomograph), which will reveal a pleural thickening and an effusion. This really is followed by a bronchoscopy. Nevertheless, it should always be left to a healthcare practitioner for a better comprehending of the respective instances. Another method is really a biopsy, which may be a needle biopsy, an open biopsy, or perhaps a thoracoscopy, exactly where a mini digital camera is inserted within the body and with that a tissue sample is attained for additional diagnosis.