1. Diagnosisa concise statement or conclusion concerning the nature, cause, or name of a disease. (note: the accuracy of a diagnosis is limited by the evidence available for study)

2. Differential Diagnosis (“rule-outs”) A list of diagnoses that could account for the history, clinical signs or lesions in a case.

3. Clinical Diagnosis Diagnosis based on data obtained from the case history, clinical signs, and physical examination.

4. Morphologic Diagnosis (lesion diagnosis) A diagnosis based on the predominant lesion(s) in the tissue. it may be macroscopic (gross) or microscopic (histologic) and describes the severity, duration, distribution, location and nature (eg degenerative, inflammatory, neoplastic) of the lesion. eg. severe, acute, locally-extensive, fibrinous bronchopneumonia.

5. Morphologic Diagnosis (lesion diagnosis)

6. Etiologic Diagnosis a definitive diagnosis that names the specific cause of the disease.

7. Disease (Definitive) Diagnosis a specific diagnosis that states the “name of the disease”.

8. Anatomic Terminology ORGAN + OPATHY (disease of an organ; the etiology / pathogenesis is not entirely clear). Hepatopathy- any disease of the liver. Nephropathy - any disease of the kidney.

9. Anatomic Terminology ORGAN + OSIS (noninflammatory disease of an organ, often used if degeneration / necrosis) e.g. Hepatosis - esp. when degeneration &/or necrosis of hepatocytes. Nephrosis - esp. when degeneration &/or necrosis of tubules.

10. Anatomic Terminology ORGAN + ITIS (an inflammatory disease of the organ). Hepatitis- inflammation of the liver. Nephritis - inflammation of the kidney. Lung + itis = ?

11. Anatomic Terminology pneumonia is the term typically used for inflammation of the lung, not "pneumonitis“ or lungitis

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