66-year-old female underwent a left suboccipital craniotomy for resection of a tentorial meningioma. The postoperative course has been difficult, marked by deterioration associated with posterior temporal and cerebellar edema and hemorrhage. First she seems to be in good general conditions showing only a slight strength deficiency in the left upper limb, but about a month after the surgery she started showing asthenia and melena, and esophageal gastroduodenoscopy revealed a sclerosis of active arterial bleeding from duodenal ulcer.

74-year-old female suffers from recurrent episodes of paroxysmal atrial fibrillation (PAF) and has been recommended oral anti-coagulant therapy with warfarin (Coumadin). She has mitral regurgitation, and on the other hand was diagnosed as suffering from congenital bronchiectasis with several episodes of significant bleeding (hemoptysis). Following these hemoptoic episodes she underwent series of diagnostic as well as therapeutic pulmonary intervention (bronchoscopy, angiography, embolization).

45-year-old male who presented with acute onset of flaccid paraparesis more pronounced on the left, sensation of current shocks in both legs and sensory level from the umbilicus downwards. The symptoms have reached their pick within less than a day. On examination the left lower limb was plegic and the right lower limb was partially weak. EMG was interpreted as demyelinating sensorimotor neuropathy. MRI showed hyperintense signals at the dorsal terminal segment of the marrow consistent with myelitis.