Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview

A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD

Diagnosis:

Psoriasis

Discussion:

X-ray of the hand with diffuse fusiform soft-tissue swelling of the entire 3rd digit. This sign refers to fusiform soft-tissue swelling involving an entire, single digit within the hand. The appearance of a sausage digit (cocktail sausage) is classically associated with the single-ray pattern of involvement seen in some patients with psoriatic arthritis, and may be the initial manifestation of the disease.

References:

Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview

A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD