Final answer:
The best method to obtain a cell sample from a tumor in the lobar bronchus for microscopic analysis is a biopsy. A biopsy involves examining a tissue sample microscopically by a pathologist specialized in disease diagnosis. The biopsy procedure provides essential information about the tumor cells, helping in diagnosing and classifying the cancer.
Step-by-step explanation:
The best method to obtain a cell sample from a tumor present in a patient's lobar bronchus for microscopic analysis is a biopsy. In a biopsy, a tissue sample from the patient is examined microscopically by a pathologist. For example, in the case of lung cancer, a bronchoscopic biopsy can be performed by a pulmonologist to obtain a sample from the lobar bronchus.
By obtaining a biopsy sample, the pathologist can examine the tumor cells under a microscope to make a definitive diagnosis of cancer. This helps in classifying and naming the cancer based on the type of tissue where it originated.
The biopsy procedure provides important information about the size, shape, and characteristics of the cancer cells, which can further distinguish different types of cancer and influence prognosis and treatment decisions. In the case of lung carcinomas, there are different subtypes such as small-cell carcinomas and non-small-cell carcinomas, each with its own prognosis and treatment approach.