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Cao Y, Meng W, Zheng J, Zhang C, Gao D, Zhou L. Prenatal MRI for the diagnosis of foetal pial arteriovenous fistula: a case report and literature review. J OBSTET GYNAECOL 2024; 44:2299372. [PMID: 38174958 DOI: 10.1080/01443615.2023.2299372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024]
Affiliation(s)
- Yimin Cao
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang City, China
| | - Weixin Meng
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang City, China
| | - JianXiong Zheng
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang City, China
| | - Chengye Zhang
- Clinical Medicine of Chengde Medical College, Chengde City, China
| | - Duo Gao
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang City, China
| | - LiXia Zhou
- Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang City, China
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Thrash GW, Hale AT, Feldman MJ, Saccomano BW, Barrett DJ, Malenkia PD, Das S, Tsemo GB, Blount JP, Rocque BG, Rozzelle CJ, Johnston JM, Jones JG. Pediatric non-galenic pial arteriovenous fistula's characteristics and outcomes: a systematic review. Childs Nerv Syst 2024; 40:1721-1729. [PMID: 38506930 PMCID: PMC11111522 DOI: 10.1007/s00381-024-06352-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/01/2024] [Indexed: 03/22/2024]
Abstract
INTRODUCTION Pediatric non-galenic pial arteriovenous fistulas (pAVFs) are rare vascular malformations that are characterized by a pial arterial-venous connection without an intervening capillary bed. Outcomes and treatment strategies for pAVFs are highly individualized, owing to the rarity of the disease and lack of large-scale data guiding optimal treatment approaches. METHODS We performed a systematic review of pediatric patients (< 18 years at diagnosis) diagnosed with a pAVF by digital subtraction angiogram (DSA). The demographics, treatment modalities, and outcomes were documented for each patient and clinical outcome data was collected. Descriptive information stratified by outcome scores were classified as follows: 1 = excellent (no deficit and full premorbid activity), 2 = good (mild deficit and full premorbid activity), 3 = fair (moderate deficit and impaired activity), 4 = poor (severe deficit and dependent on others), 5 = death. RESULTS A total of 87 studies involving 231 patients were identified. Median age at diagnosis was 3 years (neonates to 18 years). There was slight male preponderance (55.4%), and 150 subjects (81.1%*) experienced excellent outcomes after treatment. Of the 189 patients treated using endovascular approaches, 80.3% experienced excellent outcomes and of the 15 patients surgically treated subjects 75% had an excellent outcome. The highest rate of excellent outcomes was achieved in patients treated with Onyx (95.2%) and other forms of EvOH (100%). High output heart failure and comorbid vascular lesions tended to result in worse outcomes, with only 54.2% and 68% of subjects experiencing an excellent outcome, respectively. *Outcomes were reported in only 185 patients. CONCLUSION pAVFs are rare lesions, necessitating aggregation of patient data to inform natural history and optimal treatment strategies. This review summarizes the current literature on pAVF in children, where children presenting with heart failure as a result of high flow through the lesion were less likely to experience an excellent outcome. Prospective, large-scale studies would further characterize pediatric pAVFs and enable quantitative analysis of outcomes to inform best treatment practices.
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Affiliation(s)
- Garrett W Thrash
- Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Andrew T Hale
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2nd Ave S, Birmingham, AL, 35294, USA.
| | - Michael J Feldman
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Benjamin W Saccomano
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2nd Ave S, Birmingham, AL, 35294, USA
| | - D Jonah Barrett
- Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Pedram D Malenkia
- Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Somnath Das
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2nd Ave S, Birmingham, AL, 35294, USA
| | - Georges Bouobda Tsemo
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2nd Ave S, Birmingham, AL, 35294, USA
| | - Jeffrey P Blount
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Brandon G Rocque
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Curtis J Rozzelle
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - James M Johnston
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jesse G Jones
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2nd Ave S, Birmingham, AL, 35294, USA
- Department of Diagnostic Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
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Chen KS, Williams DD, Iacobas I, McClugage SG, Gadgil N, Kan P. Spontaneous thrombosis of high flow pediatric arteriovenous fistulae: Case series of two patients and a comprehensive literature review. Childs Nerv Syst 2024; 40:1405-1414. [PMID: 38085366 DOI: 10.1007/s00381-023-06241-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/21/2023] [Indexed: 04/19/2024]
Abstract
Pediatric pial arteriovenous shunts in the brain and spine are challenging to understand because of low incidence, variable presentation, and associations with genetic syndromes. What is known about their natural history comes from reviews of small series. To better understand the natural history and role for intervention, two cases are presented followed by a review of the literature. In the first case, an infant with a prior history of intracranial hemorrhage from a ruptured pial fistula returns for elective embolization for a second pial fistula which was found to be spontaneously thrombosed 2 weeks later. In the second case, a 5-year-old with a vertebro-vertebral fistula, identified on work up for a heart murmur and documented with diagnostic angiography, is brought for elective embolization 6 weeks later where spontaneous thrombosis is identified. In reviewing the literature on pediatric single-hole fistulae of the brain and spine, the authors offer some morphologic considerations for identifying which high-flow fistulae may undergo spontaneous thrombosis to decrease the potentially unnecessary risk associated with interventions in small children.
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Affiliation(s)
- Karen S Chen
- Edward B. Singleton Department of Radiology and Department of Neurosurgery, Texas Children's Hospital, Baylor College of Medicine, 6701 Fannin St, Suite 470, Houston, TX, 77030, USA.
| | - Daniel Davila Williams
- Department of Neurology, Texas Children's Hospital, Baylor College of Medicine, 6701 Fannin St, Suite 1250, Houston, TX, 77030, USA
| | - Ionela Iacobas
- Department of Pediatrics, Baylor College of Medicine, Vascular Anomalies Center at Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, 6701 Fannin St, Suite 1510, Houston, TX, 77030, USA
| | - Samuel G McClugage
- Department of Neurosurgery, Texas Children's Hospital, Baylor College of Medicine, 6701 Fannin St, Suite 1230, Houston, TX, 77030, USA
| | - Nisha Gadgil
- Department of Neurosurgery, Texas Children's Hospital, Baylor College of Medicine, 6701 Fannin St, Suite 1230, Houston, TX, 77030, USA
| | - Peter Kan
- Department of Neurosurgery, University of Texas Medical Branch, 1005 Harborside Dr, 5th floor, Galveston, TX, 77555, USA
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Alexandre AM, Romi A, Gaudino S, Gessi M, Frassanito P, Camilli A, Luca S, Pedicelli A. Giant Congenital Hemangioma of the Skull: Prenatal Diagnosis and Multimodal Endovascular and Surgical Management. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:145. [PMID: 38256405 PMCID: PMC10821461 DOI: 10.3390/medicina60010145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
Introduction: calvarial capillary hemangiomas are vascular tumors rarely seen in newborns. Differential diagnosis may be not straightforward on imaging studies and the management depends on patient and lesion characteristics. Case report: we present the case of a large congenital intracranial extra-axial lesion detected by routine prenatal US screening, a giant calvarial congenital hemangioma, treated with a multimodal strategy. Neonatal MR showed a hemorrhagic solid lesion, causing compression of brain tissue. Conservative treatment was attempted, but a one-month follow-up MR showed growth of the lesion with increased mass effect. Pre-operative endovascular embolization and surgical resection were performed. The pathology was consistent with intraosseous capillary hemangioma. The post-operative course was uneventful. At the 8-month follow-up, the patient had no clinical deficits and MR showed complete resection of the lesion. At the 13-month follow-up, the patient was asymptomatic, showing normal neurological examination and psychophysical development. Conclusions: although wait-and-see policy is feasible for small and asymptomatic lesions, radical resection is indicated when the mass is large, thus causing severe mass effect on the brain. Hypervascularization of the tumor may be responsible for hemorrhagic complications and severe anemia. On these grounds, endovascular treatment is feasible and effective to reduce hemorrhagic complications.
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Affiliation(s)
- Andrea M. Alexandre
- UOSA Interventional Neuroradiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.M.A.); (A.P.)
| | - Andrea Romi
- Neuroradiology Unit, IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Simona Gaudino
- Neuroradiology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy;
| | - Marco Gessi
- Neuropathology Unit, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Paolo Frassanito
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168 Rome, Italy;
| | | | - Scarcia Luca
- Department of Neuroradiology, Henri Mondor Hospital, 94000 Creteil, France
| | - Alessandro Pedicelli
- UOSA Interventional Neuroradiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.M.A.); (A.P.)
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Sabrina C, Laura M, Sabrina S, Giacomo T, Nicoletta M, Elena P, Francesco C, Eugenio B. Expect the unexpected: a case of spontaneous thrombosis of a pial arteriovenous fistula in a preterm newborn with review of the literature. Childs Nerv Syst 2023; 39:793-799. [PMID: 36161521 PMCID: PMC10024657 DOI: 10.1007/s00381-022-05652-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 08/13/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Pial arteriovenous fistulas (pAVF) are rare vascular malformations, especially in children and newborns. In neonates, the most common symptom is congestive heart failure. CASE PRESENTATION We report a case of an asymptomatic preterm newborn incidentally diagnosed with pAVF during a routine cranial ultrasound (cUS) on the third day of life. Cerebral magnetic resonance (MRI) confirmed the diagnosis. A wait-and-see approach was chosen by the multidisciplinary team. The cUS and the MRI on day 14 of life showed the spontaneous resolution of the lesion. CONCLUSIONS This case underlines the challenges in identifying pAVF in the first weeks of life and demonstrates a possible positive outcome for affected neonates.
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Affiliation(s)
- Congedi Sabrina
- University of Padua, Department of Women's and Children's Health, Padova University Hospital, Unit of Neonatal Intensive Care Unit, Division Women's and Children's Health , Padua, Italy.
| | - Moschino Laura
- University of Padua, Department of Women's and Children's Health, Padova University Hospital, Unit of Neonatal Intensive Care Unit, Division Women's and Children's Health , Padua, Italy
| | - Salvadori Sabrina
- University of Padua, Department of Women's and Children's Health, Padova University Hospital, Unit of Neonatal Intensive Care Unit, Division Women's and Children's Health , Padua, Italy
| | - Talenti Giacomo
- Neuroradiology Unit, Padova University Hospital, Padua, Italy
| | - Mainini Nicoletta
- University of Padua, Department of Women's and Children's Health, Padova University Hospital, Unit of Neonatal Intensive Care Unit, Division Women's and Children's Health , Padua, Italy
| | - Priante Elena
- University of Padua, Department of Women's and Children's Health, Padova University Hospital, Unit of Neonatal Intensive Care Unit, Division Women's and Children's Health , Padua, Italy
| | - Causin Francesco
- Interventional Neuroradiology, Padova University Hospital, Padua, Italy
| | - Baraldi Eugenio
- University of Padua, Department of Women's and Children's Health, Padova University Hospital, Unit of Neonatal Intensive Care Unit, Division Women's and Children's Health , Padua, Italy
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İPEK MŞ, YILMAZ A. A neonatal case of pial arteriovenous fistulas and the review of literature. JOURNAL OF HEALTH SCIENCES AND MEDICINE 2021. [DOI: 10.32322/jhsm.938395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Phelps RRL, Raygor KP, Amans MR, Gupta N, Abla AA. Occult Brain Arteriovenous Malformation Superimposed on a Pial Arteriovenous Fistula: Case Report. Pediatr Neurosurg 2021; 56:549-554. [PMID: 34433175 DOI: 10.1159/000517889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/14/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Pial arteriovenous fistulas are characterized by an abnormal connection between an intracranial artery and vein without an intervening nidus. Their predominant symptoms largely arise from mass effect, shunting, or hemorrhage. Most conservatively managed cases progress to death, but endovascular and/or surgical intervention is often successful. CASE PRESENTATION We present the unique case of a 15-year-old girl with spontaneous intracranial hemorrhage from a single-vessel arteriovenous fistula. Although preoperative imaging failed to show a distinct nidus, intraoperative indocyanine green angiography performed after successful clipping of the primary fistulous site revealed residual shunting from a peri-lesional arteriovenous malformation. DISCUSSION/CONCLUSION This case demonstrates the importance of intraoperative imaging and meticulous circumferential inspection of these lesions to detect residual vascular shunting.
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Affiliation(s)
- Ryan R L Phelps
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA,
| | - Kunal P Raygor
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Matthew R Amans
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA
| | - Nalin Gupta
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Adib A Abla
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
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Alvarez H, Niazi MH, Loewenstein J, Quinsey CS. Neonatal bilateral cerebral high flow fistulae leading to detection of a HHT-family carrier. Interv Neuroradiol 2020; 27:547-552. [PMID: 33353465 DOI: 10.1177/1591019920981308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Cerebral and spinal cord high-flow arteriovenous fistulae (HFAVF) are part of the spectrum of lesions found in Hereditary Hemorrhagic Telangiectasia (HHT). HFAVF consist of communications between large arteries and veins without interposed nidi or capillary transitions. The association between HHT and cerebral or spinal HFAVF in children has been reported and suggested as a potential marker for HHT. We present a newborn with bilateral intracranial HFAVF tested positive for HHT1 and belonging to a family non known for carrying a HHT mutation. We also review reported cases of neonates and infants with cerebral and spinal HFAVF emphasizing their associations with genetic syndromes. Our aim is to add a new case to the pertinent literature and emphasize the need for molecular testing in children with spinal or brain HFAVF.
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Affiliation(s)
- Hortensia Alvarez
- Division of Interventional Neuroradiology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Muhammad H Niazi
- Division of Interventional Neuroradiology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Joshua Loewenstein
- Department of Neurosurgery at the University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Carolyn S Quinsey
- Department of Neurosurgery at the University of North Carolina School of Medicine, Chapel Hill, NC, USA
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Jin H, Meng X, Quan J, Lu Y, Li Y. Role of endovascular embolisation for curative treatment of intracranial non-Galenic pial arteriovenous fistula. Stroke Vasc Neurol 2020; 6:260-266. [PMID: 33298535 PMCID: PMC8258090 DOI: 10.1136/svn-2020-000482] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/26/2020] [Accepted: 10/22/2020] [Indexed: 11/12/2022] Open
Abstract
Background and purpose The safety and effectiveness of endovascular treatment for non-Galenic pial arteriovenous fistula (NGPAVF) is inadequately known. The aim of this study is to explore the role of endovascular embolisation for curative treatment of NGPAVF. Materials and methods Patients with NGPAVF underwent endovascular treatment from January 2011 to November 2019 in our institution were retrospectively reviewed. Demographics, clinical information, treatment details and clinical outcomes were collected. Factors associated with clinical outcomes were statistically analysed. Results Twenty patients were included, with a total of 22 (2 patients have 2 fistulas) lesions. A total of 25 procedures were performed and 5 patients underwent 2 procedures. Follow-up ranged from 3 to 84 months (mean=34.5 months). Thirteen (59.1%) lesions in 12 (60.0%) patients acquired immediate occlusion after initial treatment (immediately occluded group) and follow-up confirmed the complete obliteration. A total of 17 (77.3%) lesions in 15 (75.0%) patients were cured at last follow-up. The maximal diameter of feeding arteries (p=0.04) and the maximal diameter of the varix (p=0.01) in immediately occluded group was smaller than non-immediately occluded group. The number of feeding artery (p=0.004) and the maximal diameter of the varix (p<0.001) were much smaller in curative group than non-curative group. Seven patients suffered procedure-related complications. No patients had an increased Modified Rankin Scale (mRS) and all patients had favourable clinical outcome (mRS ≥2) at last follow-up. Conclusions Endovascular therapy plays an important role in curative treatment of NGPAVF. Patients with less feeding arteries and small varix may be easier to be cured by endovascular embolisation.
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Affiliation(s)
- Hengwei Jin
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Beijing, China
| | - Xiangyu Meng
- Interventional Neuroradiology department, Beijing Neurosurgical Institute, Beijing, China
| | - Jiale Quan
- Pediatric department, Dongming People's Hospital, Beijing, China
| | - Yi Lu
- Interventional Neuroradiology department, Beijing Neurosurgical Institute, Beijing, China
| | - Youxiang Li
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing, China
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Lv X, Jiang C, Wang J. Pediatric intracranial arteriovenous shunts: Advances in diagnosis and treatment. Eur J Paediatr Neurol 2020; 25:29-39. [PMID: 31996298 DOI: 10.1016/j.ejpn.2019.12.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/24/2019] [Accepted: 12/29/2019] [Indexed: 02/07/2023]
Abstract
Pediatric intracranial arteriovenous shunts (IAVSs) comprise a wide range of lesions, including pial arteriovenous malformation (AVM) and arteriovenous fistula (AVF), dural arteriovenous fistula (DAVF) and vein of Galen aneurysmal malformation (VGAM). We provide an overview of pediatric IAVSs, encompassing both diagnosis and endovascular treatment. We include references from pertinent literature and representative cases from our hospital. Pediatric IAVS are frequently associated two broader conditions, such as capillary malformation-arteriovenous malformation (CM-AVM) and hereditary hemorrhagic telangiectasia (HHT). These conditions and the associated genetic mutations have only recently been described. Their impact on the brain will be different in the prenatal period, in neonates, in infants, and in children, with variable symptoms according to each age group and the current strategies of endovascular treatment in the management of these vascular lesions will be discussed. This review could improve the understanding of pediatric IAVSs and their diagnosis and treatment.
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Affiliation(s)
- Xianli Lv
- Neurosurgery Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China.
| | - Chuhan Jiang
- Neurosurgery Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - James Wang
- Neurosurgery Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
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Congenital pial AVF along the falx cerebri with complete agenesis of the corpus callosum and bilateral parasagittal pachygyria-polymicrogyria secondary to chronic ischemia. Childs Nerv Syst 2019; 35:569-574. [PMID: 30539296 DOI: 10.1007/s00381-018-4019-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/29/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Pial arteriovenous fistula (AVF) is an extremely rare entity due to direct arterial connection with the venous plexus without an intervening capillary network. The objective of this article is to describe a unique case of congenital pial AVF along the interhemispheric falx with complete callosal agenesis and malformation of cortical development within the bilateral anterior cerebral artery territories. We also demonstrated the distinctive feature of temporal stability of the extensive intracranial abnormalities without active intervention. Less than 100 cases have been reported thus far, most of which involve the adult rather than pediatric age group. A comprehensive literature review of congenital pial AVF will also be included. CASE DESCRIPTION A 5-year-old child presented with headache and complex partial seizures. Imaging of the brain revealed the presence of polymicrogyria-pachygyria in the parasagittal frontoparietal lobes with associated underlying white matter hypodensities. Complete agenesis of the corpus callosum was also seen. In addition, enlarged and tortuous vessels were noted along the interhemispheric falx with no appreciable nidus. Bilateral dilated and tortuous ACAs were seen supplying the network of abnormal vessels along the falx. The radiological findings were stable on a follow-up MRI 12 years later. CONCLUSION Our reported case adds to current limited knowledge of this rare entity in the pediatric age group, which is traditionally treated aggressively and urgently. Our case demonstrated temporal stability of this lesion with no detrimental complications observed. This suggests that the outcome of pial AVFs with conservative treatment may not be as grim as previously thought.
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