![]() Surgeons should keep in mind that radiological examination before the operation could prevent undesirable complications.Ī 25-year-old male patient was admitted to the clinic with a mass growing slowly for about 5 years on the parietal bone. The therapeutic gold standard is surgery. The definitive diagnosis is made by histopathological examination. The pathogenesis of PIVMs is not completely understood. In very few of these cases, the mass is located in the parietal bone. Ninety-three PIVM cases have been reported in the skull since 1845. No complications were encountered in the postoperative period. The calvarial defect was not reconstructed due to equipment inadequacy. The resulting defect was reconstructed with bilateral rotation advancement flaps. The mass was excised completely while preserving the integrity of the dura. There was a 3-cm full-thickness defect on the parietal bone caused by the lesion. However, intraoperative diagnosis was a vascular malformation. The patient was operated under local anaesthesia with a provisional diagnosis of a trichilemmal cyst. On physical examination, it was observed that the hair density on the mass was decreased, the mass had a soft consistency, and there was no pain on palpation. ![]() A 25-year-old male patient was admitted to the clinic with a mass on the parietal bone. In this case report, we aimed to present a rare case of intraosseous vascular malformation causing a large lytic area in the parietal bone. Primary intraosseous vascular malformations (PIVMs) are rare intraosseous lesions, accounting for approximately 0.5–1% of all intraosseous tumours. ![]()
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