Fever of unknown origin due to dental infections: cases report and review.

Persistent undiagnosed fever remains a common problem in clinical practice. In a variable number of cases, no definitive diagnosis is made. This lack of a clear etiology indicates that certain disorders are not being detected despite the recently developed technology usually applied in this situation.

Autoimmune cholangitis presented as fever of unknown origin.

Autoimmune cholangitis is a rare chronic cholestatic liver disease. Fever of unknown origin is defined as a temperature higher than 38.3 degrees C that lasts for more than 3 weeks with no obvious source despite appropriate investigation.

Parotid mass due to cat scratch disease.

Cat scratch disease (CSD), due to Bartonella henselae, is a self-limited chronic lymphadenopathy. A previously healthy 22-year-old woman presented with a palpable painful swelling in the right submandibular region accompanied by enlarged cervical lymph nodes. A diagnosis of B.

Cytomegalovirus enteritis in an immunocompetent host.

A 60-year-old healthy woman presented with fever, abdominal pain and bloody diarrhea. After initial conservative therapy, enterectomy was performed because of perforation of the jejunum. Histological analysis and high titer of anti-CMV IgM confirmed the diagnosis.