Primary Psoas Abscess Due to Salmonella typhi.

Typhoid fever is a febrile illness caused by Salmonella typhi. The usual symptoms include fever, malaise, and compromise of the gut such as diarrhea and abdominal pain. Occasionally, an extraintestinal involvement can be seen and it may be accompanied by severe complications like bowel perforation or massive hemorrhage. The general manifestations are always present in the extraintestinal compromise, and can be preponderant. However, nonintestinal involvement without the general symptoms that this case reports is so rare that no related records can be found in the MEDLINE database.