Dx… SAUSAGE DIGITS…
The term sausage digit refers to the clinical and radiologic appearance of diffuse fusiform swelling of a digit due to soft-tissue inflammation from underlying arthritis or dactylitis…
The common causes of sausage digit are :
psoriatic arthropathy
osteomyelitis
sickle cell anemia
sarcoidosis
tuberculous dactylitis (spina ventosa)
leukemia
syphilitic dactylitis
gout