Beckenfinger
Pelvic digit, also known as a pelvic rib, pelvic finger or 11 finger, is a rare congenital abnormality where there is development of bony tissue in the soft tissue pelvis and less commonly in the abdomen. They can be associated with one or more pseudoarticulations. They are usually unilateral, though one case of bilateral pelvic digits has been reported .
The condition was first described by Sullivan and Cornwell in 1974, where a rib was noted radiologically in a girl . Most cases of pelvic digit variations occur to the ilium.
Pathology
Pathogenesis is unknown but is thought to occur during early embryogenesis from non-fusion of the vertebral column and the superior part of the coccyx and subsequent independent development of the intervening cartilaginous segment .
Treatment and prognosis
It is a benign entity and one of the so-called “do not touch” lesions and if incidentally discovered no further investigations are required. On rare occasions it can provoke localized pain .
Differential diagnosis
General imaging differential considerations include:
- myositis ossificans on the pelvis
- avulsion injury of the pelvis
Siehe auch:
Assoziationen und Differentialdiagnosen zu Beckenfinger:
