Cerebral metastasis from an undifferentiated sarcoma of the left atrium.

A rare case of a cerebral metastasis 13 months after open heart surgery because of an undifferentiated sarcoma of the left atrium is presented.

Malignant meningioma as a second malignancy after therapy for acute lymphatic leukemia without cranial radiation.

Rationale: Meningiomas in the pediatric age group are very rare tumors, comprising about 1-4.2% of all primary pediatric intracranial tumors.

Case Report: We present a 17-year-old patient who suffered from an intraventricular malignant meningioma.

Prevalence of diverticulosis and incidence of bowel perforation after kidney transplantation in patients with polycystic kidney disease.

Sigmoid perforation due to diverticulitis is a life-threatening complication in the postoperative course of allogenic kidney transplantation. The incidence of diverticulosis is especially high among patients with autosomal dominant polycystic kidney disease (ADPKD). Thus, those who undergo allogenic kidney transplantation represent a high-risk group.