Arteriovenous malformation of the pregnant uterus is very rare, and may present with unexplained torrential bleeding. We report a patient with absence of the conventional risk factors, and was saved by quick recourse to hysterectomy to control the bleeding.
Anaesthetic experience of the first nine patients in Singapore who underwent closed embolisation of cerebral arteriovenous malformations is reported. Six patients had neurolept analgesia and three had general anaesthesia.
Hemorrhage of arteriovenous malformation (AVM) is a rare condition during pregnancy. This study was proposed to pool the proportion of AVM hemorrhage per pregnancy. A systematic review and meta-analysis with three databases were performed to review the studies published until April 2022. The Newcastle Ottawa Scale was used for risk assessment of data quality. The meta-analysis was conducted by a generic inverse variance of double arcsine transformation with a random model using Stata software. Twelve studies were included in this review. The pooled proportion of AVM hemorrhage per pregnancy was 0.16 (95% CI: 0.08, 0.26). The subgroup analyses were carried out based on world regions and study designs, and the study duration with the highest proportion of each subgroup was Europe [0.35 (95% CI: 0.02, 0.79)], with retrospective review [0.18 (95% CI: 007, 0.32)] and 10 to 20 years of study duration [0.37 (95% CI: 0.06, 0.77)]. The AVM hemorrhage per pregnancy in this review was considered low. However, the conclusion must be carefully interpreted since this review had a small study limitation.
Haemorrhage arising from gastric arteriovenous malformation (AVM) is rare and normally occurs in the elderly. Bleeding gastric AVM presenting in the younger age group is even rarer. We report a case of a 14 year old boy who presented with recurrent episodes of haematemesis. He subsequently underwent a proximal gastrectomy and the histological examination confirmed a gastric AVM. After reviewing the literature we believe this is the youngest ever reported case of bleeding gastric AVM reported in English literature.
Renal arteriovenous malformation (AVM) is a rare congenital anomaly of the urinary system. We present a patient with bilateral renal AVMs who presented with back pain and microscopic hematuria. This case highlights the importance of careful diagnostic work-up in the evaluation of upper tract hematuria. Renal AVM was found to be the cause of mild back pain and persistent microscopic hematuria in a 45-year-old lady. This case highlights the importance of complete diagnostic work-up in the evaluation of microscopic hematuria in arriving at the correct diagnosis of an uncommon clinical entity.
Intracranial arteriovenous malformations (AVMs) of Spetzler-Martin grades (SMGs) I-III are treated using either monomodality treatments of microsurgical excision, embolization or stereotactic radiosurgery (SRS), or a combination of two or more of these treatment options. At Hospital Kuala Lumpur, we still practice monomodality treatments for AVMs of these three grades. In this study, we wanted to achieve an understanding whether monomodality treatments can achieve a satisfactory outcome of AVM nidi for patients, for up to 3 years, and to gather an objective data for AVM treatment for the Malaysian population.
We report a rare case of Arteriovenous malformation (AVM) of the scalp in a 30 year-old Malay gentleman who presented with painless forehead swelling since birth. Magnetic Resonance Imaging (MRI) and cerebral angiogram performed and the findings are discussed.
Precision Radiotherapy at high doses require a fixed, referable target point. The frame system fulfills the required criteria by making the target point relocatable and fixed within a stereotactic space. Since December 2001, we have treated 28 central and peripheral nervous system lesions using either radiosurgery as a single high dose fraction or fractionated 3-dimensional conformal radiotherapy using a lower dose and a multi-leaf collimator. Various pathological lesions either benign or malignant were treated. Eighty six percent of our treated lesions showed growth restraint, preventing them from causing new symptoms with a median follow-up duration of 20.5 months. However, the true benefit from this technique would require a long-term follow-up to document the progress.
Isolated involvement of the clitoris by vascular malformation (VM) is very rare. Clinically, the lesion simulates female pseudohermaphroditism. A five-year-old girl presented with clitoromegaly and a clinical diagnosis of solitary VM of the clitoris was made. Magnetic resonance imaging showed characteristic features and confirmed the diagnosis and the extent of the VM. This is the first reported case of isolated involvement of the clitoris by VM to be diagnosed preoperatively.
A 16-year-old boy was referred with features of Parkes Weber syndrome (PWS) involving the right lower limb. He had presented at birth with cutaneous vascular malformations (VM) in the right thigh and at the age of 7 years developed congestive cardiac failure, which was controlled with drugs. He received alpha interferon and steroids during this period without any benefit. He defaulted follow-up and at 12 years of age presented with further enlargement of the VM in the right thigh and leg with skin and soft tissue thickening. At this stage, embolization and subsequent excision of the VM were tried, but the surgery was abandoned because of massive hemorrhage. Over the next 4 years, the boy became totally bedridden because of massive increase in the size of the limb, repeated hemorrhages, and secondary infection of the VM. Right hip disarticulation was considered the best option to improve his quality of life. To prevent uncontrollable hemorrhage during surgery, the disarticulation was done under cardiopulmonary bypass with low circulatory flow. Postoperatively, the patient required intensive care nursing for a week. He is presently ambulatory with crutches. Cardiopulmonary bypass with low flow has been used for treating posttraumatic arteriovenous malformations. However, its use in surgery for PWS has not been reported earlier.
Historically a calibre persistent submucosal artery was most often described in the stomach. However in later years it was also discovered in the duodenum and jejunum. It is an uncommon and important cause of massive gastrointestinal bleeding in which failure of detection and early intervention would lead to death. In this paper we report a 27-year-old man with no significant medical history who presented at the emergency unit for recurrent melaena, haematochezia and hypotension. Initial investigations failed to localize the source of bleeding. Emergency exploratory laporatomy revealed a small jejunal mucosal nodule that was actively spurting blood. Histopathological evaluation identified a calibre persistent submucosal artery.
Pulmonary arteriovenous malformations are rare vascular anomalies. We report a 12-year-old girl who presented with exertional dyspnoea, cyanosis and clubbing since the age of five years, and multiple pulmonary arteriovenous malformations. Computed tomography pulmonary angiogram showed a large pulmonary arteriovenous malformation at the lower lobe of the right lung. Pulmonary angiogram showed a large right lung arteriovenous malformation and two small left lung arteriovenous malformations. The multiple arteriovenous malformations were occluded with Gianturco coils. She is now asymptomatic and on regular follow-up.
Embolisation has long been used as an adjunct to surgical resection in the treatment of brain arteriovenous malformation (bAVM). The most commonly used embolic material, n-butylcyanoacrylate glue, requires experience and skill to handle its quick and unpredictable flow and polymerisation. A new liquid embolic agent, ethylene vinyl alcohol copolymer (Onyx), is less adhesive and polymerises slowly, which provides better control for radiologists performing embolisation.
Stereotactic radiosurgery uses a single fraction high dose radiation while stereotactic radiotherapy uses multifractionated lower dose focused radiation.
Arteriovenous malformation (AVM) are commonly congenital in origin. We hereby describe the case of a 24-year-old male who was diagnosed of left thigh intramuscular AVM at the time of 14 years old. The computerized tomography (CT) scan confirmed a large deep seated intramuscular AVM with the size of 20 x 15 cm, with dilated and distended feeding vessel from profunda femoris artery (PFA) and superficial femoral artery (SFA). He also had another AVM near the left supracondylar region adherent to the sciatic nerve. The main AVM lesion was earlier treated with surgical resection and it remained for asymptomatic for next seven years. Following this, the patient presented again to the clinic with recurring swelling, pain and occasional paraesthesia on the same site. He was then managed with a series of embolization (total of 6 attempts) with histoacryl glue. These attempts of embolization were successful. The interesting case of pulmonary embolism due histoacryl glue following embolization of an AVM is described.
The availability of multiple investigating modalities should be utilized to arrive at the correct diagnosis of the spinal arteriovenous malformation (AVM). We hereby report the case of a 21-year-old, obese female, who presented with paraplegia and impaired bowel control two years after an episode of the fall. The Magnetic Resonance Imaging (MRI) of her spine not only revealed disc prolapse at T11-T12, but also tortuous dilated spinal veins and cord oedema. A diagnosis of a spinal arterio-venous fistula was confirmed after a spinal angiogram. The dilemma of treating the right pathology for the clinical signs and symptoms are being discussed.
Cerebral arteriovenous malformation (AVM) is a rare entity with an estimated prevalence of 0.01-0.05% in the general population. We reviewed hospital obstetric records during 2010-2017 and reported a case series of six patients with cerebral AVM in pregnancy, of which five patients had successful pregnancy, and one maternal mortality.
Acute massive haemothorax is a life-threatening situation, which is often associated with a preceding trauma. However, spontaneous haemothorax is a rare occurrence, especially in pregnancy. Spontaneous haemothorax in the immediate post-partum period secondary to a ruptured intercostal AVM is extremely rare more so in the background of an undiagnosed neurofibromatosis. This is a report of a young lady presenting with pleuritis and breathlessness after the delivery of her 1st child. Her management is discussed.
A case of an intracerebral bleed in a young man with a rare combination of arteriovenous malformation (AVM) and unilateral moyamoya disease is presented. The location of the bleed in the left basal ganglia corresponded to the area supplied by the basal moyamoya vessels. The AVM which received supply from collateral moyamoya vessels as well as normal cerebral arteries was located in the ipsilateral parieto-occipital region posterior to the basal ganglia bleed. This is the first reported cerebral AVM co-existing with a unilateral moyamoya disease in the English literature. Unusual features of the case such as the unilaterality of the angiographic abnormalities, their coexistence and hypotheses as to their development are discussed.
Arterio-venous malformation (AVM) of the head of the pancreas is a rare condition that may cause upper gastro-intestinal tract (GIT) bleeding. A 45-year-old man with a large AVM at the pancreato-biliary region is described. The patient had recurrent episodes of hematemesis and melena. Enlargement of the AVM was documented by serial abdominal CT scans performed after each bleed. Whipple procedure was successfully performed in this patient.