In medicine, a case report may be a detailed report of the symptoms, signs, diagnosis, treatment, and follow-up of a private patient. Case reports may contain a demographic profile of the patient but usually describe an unusual or novel occurrence. Some case reports also contain a literature review of other reported cases. Case reports are professional narratives that provide feedback on clinical practice guidelines and offer a framework for early signals of effectiveness, adverse events, and cost. They can be shared for medical, scientific, or educational purposes.  An unexpected association between diseases or symptoms. An unexpected event in the course of observing or treating a patient, Findings that shed new light on the possible pathogenesis of a disease or an adverse effect, Unique or rare features of a disease, Unique therapeutic approaches, and a positional or quantitative variation of the anatomical structures.