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Resection and Reconstruction of Giant Abdominoscrotal Arteriovenous Malformation.

ABSTRACT: Genital arteriovenous malformations are rare and present unique surgical challenges in preserving urogenital function, abdominal wall integrity, and lower limb perfusion. A 32-year-old man with a giant abdominoscrotal arteriovenous malformation presented with recurrent heavy bleeding. Due to the high risk of rebleeding and fatal hemorrhage, surgery with curative intent was proposed and the patient was counseled on the risks of ischemia to the lower limb, testes, and penis. Preoperative embolization of the feeding vessels was performed. Three days later, surgical excision of the mass with the affected scrotum, left rectus muscle, sheath, and overlying abdominal skin followed. The testes were dissected from the malformation and preserved along with the right internal pudendal artery. The left thigh skin was advanced to the scrotal remnants and a neoscrotum created. The resulting large abdominal wall defect was reconstructed in layers with a pedicled anterolateral thigh flap, including innervated vastus lateralis muscle, to prevent herniation. Recovery was uneventful, and a 4-year follow-up revealed no significant clinical or radiological recurrence with recovery of flap sensation, retained erectile function, and no herniation. We report this case due to rarity of giant abdominoscrotal arteriovenous malformations and present preoperative embolization, surgical resection, and functional anterolateral thigh flap reconstruction as a valuable treatment option of this life-threatening illness.

SUBMITTER: Danno K

PROVIDER: S-EPMC7253270 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BACKGROUND:Pulmonary arteriovenous malformations are abnormal direct connections between the pulmonary artery and pulmonary vein which result in a right-to-left shunt. They are associated with substantial morbidity and mortality mainly from the effects of paradoxical emboli. Potential complications include stroke, cerebral abscess, pulmonary haemorrhage and hypoxaemia. Embolisation is an endovascular intervention based on the occlusion of the feeding arteries the pulmonary arteriovenous malformations thus eliminating the abnormal right-to-left-shunting. This is an update of a previously published review. OBJECTIVES:To determine the efficacy and safety of embolisation in patients with pulmonary arteriovenous malformations including a comparison with surgical resection and different embolisation devices. SEARCH METHODS:We searched the Cystic Fibrosis and Genetic Disorders Group's Trials Register; date of last search: 10 April 2017.We also searched the following databases: the Australian New Zealand Clinical Trials Registry; ClinicalTrials.gov; International Standard Randomised Controlled Trial Number Register; International Clinical Trials Registry Platform Search Portal (last searched 27 August 2017). to be updatedWe checked cross-references and searched references from review articles. SELECTION CRITERIA:Trials in which individuals with pulmonary arteriovenous malformations were randomly allocated to embolisation compared to no treatment, surgical resection or embolisation using a different embolisation device. DATA COLLECTION AND ANALYSIS:Studies identified for potential inclusion were independently assessed for eligibility by two authors, with excluded studies further checked by a third author. No trials were identified for inclusion in the review and hence no analysis was performed. MAIN RESULTS:There were no randomised controlled trials included in the review; one ongoing trial has been identified which may be eligible for inclusion in the future. AUTHORS' CONCLUSIONS:There is no evidence from randomised controlled trials for embolisation of pulmonary arteriovenous malformations. However, randomised controlled trials are not always feasible on ethical grounds. Accumulated data from observational studies suggest that embolisation is a safe procedure which reduces morbidity and mortality. A standardised approach to reporting with long-term follow-up through registry studies can help to strengthen the evidence for embolisation in the absence of randomised controlled trials.

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Resection and Reconstruction of Giant Abdominoscrotal Arteriovenous Malformation.

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