Sausage digit

Case contributed by Mohammad Taghi Niknejad
Diagnosis certain

Presentation

Digit pain and swelling. Known case of psoriasis.

Patient Data

Age: 35 years
Gender: Female
x-ray

There is a cortical irregularity with mild periosteal reaction in the proximal phalanx of the right hand's second finger, accompanied by surrounding soft tissue swelling consistent with the sausage digit.

Case Discussion

The sausage digit refers to the fusiform swelling of a digit due to soft tissue inflammation from underlying arthritis or dactylitis, and psoriasis is one of the important causes. 

The other important etiologies are tuberculous dactylitis (spina ventosa) and sickle cell disease.

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