[Ultrasound findings in rupture of the colon after blunt abdominal trauma]. / Sonographische Befunde bei Ruptur des Kolons nach stumpfem Bauchtrauma.

A 20-year old man presented with pain in the upper abdomen but without external signs of injury after blunt abdominal trauma. On sonography free fluid and a mixed echogenic mass in the upper right abdominal quadrant were observed. On laparotomy a hematoma in the ascending colon following rupture of the serosa and muscularis and a hemoperitoneum were discovered.

[Synovial hemangioma of the knee joint--a rare cause of recurrent hemarthrosis]. / Das Synovialhämangiom des Kniegelenks--seltene Ursache eines rezidivierenden Hämarthros.

In the differential diagnosis of bloody knee joint effusions synovial haemangioma as a rare cause has to be considered. Especially suspicious are long durations of disease with recurrent atraumatic blood-stained joint effusions and repeated episodes of painful limitation of motion, laboratory and radiographic findings often being normal. On the one hand arthroscopy can prove the diagnosis by obtaining an ample biopsy specimen, on the other hand it facilitates the healing of the lesion at the same time by radical removal of the tumour.