We present a longitudinal series of arterial spin-labeling magnetic resonance imaging (ASL-MRI) in a patient with cerebral arteriovenous malformations (AVMs) treated by stereotactic radiosurgery (SRS). Pretreatment ASL-MRI showed high signal intensity in both the nidus and draining veins, and the latter signal abnormality gradually moved proximally by 14 months after SRS. At 24 months, the sign...

Gastrointestinal stromal tumors (GIST) most commonly arise from the stomach followed by the small intestine and are common cause for an occult gastrointestinal (GI) bleeding. We present an unusual case of a jejunal GIST, which presented as an acute gastrointestinal haemorrhage. This case highlights the importance of an intravenous contrast enhanced abdominal CT with neutral oral contrast for th...

Cerebral arteriovenous malformations (AVMs) are rare vascular lesions detected at an annual incidence of ≈1 in 100 000. The natural history of unruptured AVMs is more benign than ruptured ones, primarily because of their lower hemorrhage risk. The only currently available strategy for AVM management that provides durable relief from the risk of hemorrhage is complete obliteration of the nidus. ...

OBJECTIVE To assess the effect of concurrent arterial aneurysms on the risk of incident haemorrhage from brain arteriovenous malformations (AVMs). METHODS In a cross sectional study, 463 consecutive, prospectively enrolled patients from the Columbia AVM Databank were analysed. Concurrent arterial aneurysms on brain angiography were classified as feeding artery aneurysms, intranidal aneurysms,...

Spinal cord arteriovenous malformations (A VMs), although comparatively rare , are important because of their potential to be cured surgically. Yet they are often undiagnosed preoperatively because of their protean natural history [1). Preoperative myelography and/or CT scanning may demonstrate only a mass without other clues to the vascular nature of the lesion , thus not prompting a definitiv...

A 52-year-old Japanese man presented for evaluation and treatment of rectal cancer. Screening computed tomography revealed pancreatic arteriovenous malformations (P-AVMs) and abnormally expanded inferior mesenteric vein (IMV) that resulted from P-AVMs. One-stage surgery for rectal cancer was dangerous so we first performed distal pancreatectomy to cure P-AVM and thus normalize the abnormally ex...

A fifty-two year old postmenopausal woman was admitted to the hospital with complaints of diplopia, headache, humming over the head, and pain over the left eye. Neurological examination showed right abducens nerve palsy. In a few days, she also developed left abducens nerve palsy and chemosis, exophthalmos, and proptosis of both eyes. There was pulsation over the left eye. Intraocular pressure ...

Arteriovenous malformation (AVM) is a congenital lesion commonly associated with intracranial hemorrhage. We describe a woman with an AVM (Spetzler-Martin grade V) and presenile progressive dementia. The association between AVM and cognition is discussed.

Congenital arteriovenous malformations (AVMs) may occur in any organ. Skin AVMs are common, but AVMs of the chest wall or extradural space are uncommon. We report a patient with an extensive AVM that involved skin, chest wall, and extradural space. Definitive treatment of such an AVM is difficult. A 23-year-old man presented with progressive lower extremity weakness. A large cutaneous 'haemangi...

Hypertensive patients presenting at the extremes of age may have a secondary cause of hypertension. Congenital arteriovenous malformation (AVM) and acquired arteriovenous fistula (AVF) are rare causes of secondary hypertension w1–10x. Acquired AVFs tend to be single linear connecting vessels and comprise 70–80% of renal arteriovenous abnormalities and usually result from trauma, biopsy, surgery...