Diagnostic Cytopathology Essentials is a succinct yet comprehensive guide to diagnosis in both non-gynecological and gynecological cytology. It provides quick answers to diagnostic problems in the cytological interpretation and recognition of a wide range of disease entities. Diagnosis of Cancer is nearly always diagnosed by an expert who has looked at cell or tissue samples under a microscope. In some cases, tests done on the cells’ proteins, DNA, and RNA can help tell doctors if there’s cancer. These test results are very important when choosing the best treatment options. Fine needle aspiration cytology is an inexpensive, a traumatic technique for the diagnosis of disease sites. It illustrates how it may be applied to the management of tumors throughout the body. The limitations of the method, the dangers of false positive reports, and the inevitability of false negative diagnoses are emphasized. In a clinical context the method has much to offer by saving patients from inappropriate operations and investigations and allowing surgeons to plan quickly and more rationally. It is an economically valuable technique and deserves greater recognition. Esophagus cancers are usually found because of signs or symptoms a person is having. If esophagus cancer is suspected, exams and tests will be needed to confirm the diagnosis. If cancer is found, further tests will be done to help determine the extent (stage) of the cancer.