Indonesian Journal of Medicine (2021), 06(04): 393-398 Masters Program in Public Health, Universitas Sebelas Maret Case Report e-ISSN: 2549-0265 393 Bilateral Pulmonary Arteriovenous Malformation in Female Patient Based on Computed Tomography Imaging: A Rare Case Report Sony Sutrisno Department of Radiology, Faculty of Medicine and Health Sciences, Krida Wacana Christian University, Jakarta, Indonesia ABSTRACT Background: Pulmonary arteriovenous malformations (PAVMs) is an extremely rare vascular anomaly due to a direct connection between the pulmonary artery and pulmonary vein, potentially causing irreversible damages to the systemic circulation. This condition requires a prompt diagnostic approach to ensure early diagnosis and treatment. Case Report: A 53-year-old Indonesian female was referred to our department with unexplained dyspnoea and cyanosis. Physical examination revealed low oxygen saturation and remarkable finding on pulmonary auscultation. Further investigation revealed the findings suggesting PAVM based on contrast-enhanced chest computed tomography (CT) scan, with multiple nidus on bilateral lungs with feeder arteries from the pulmonary artery and draining veins in the pulmonary vein. Hence, this case emphasizes the rare finding of a female PAVMs patient with bilateral PAVMs. Conclusion: CT scan is a reliable and effective imaging approach to establish the diagnosis of PAVMs. This modality should be first considered to visualize PAVMs lesions, particularly in adult patients with unexplained dyspnoea and cyanosis. Keywords: arteriovenous malformations, CT scan, rare case, embolization Correspondence: Sony Sutrisno. Department of Radiology, Faculty of Medicine and Health Sciences, Krida Wacana Christian University, Jakarta, Indonesia. Email: sonysutrisnodr@gmail.com. Mobile: +62-8128- 9290-414. Cite this as: Sutrisno S (2021). Bilateral Pulmonary Arteriovenous Malformation in Female Patient Based on Computed Tomography Imaging: A Rare Case Report. Indones J Med. 06(04): 393-398. https://doi.org/10.26911/theijmed.2021.06.04.05. Indonesian Journal of Medicine is licensed under a Creative Commons Attribution-Non Commercial-Share Alike 4.0 International License. BACKGROUND Pulmonary arteriovenous malformations (PAVMs) are a rare formation of an abnormal vascular connection between the pulmonary artery and pulmonary vein through a thin-walled aneurysmal sac. It is estimated to occur in 2-3 per 100.000 people, with a higher incidence among males than females. The clinical consequ- ences of PALMs are related to the entry of deoxygenated blood into the systemic circulation (right-to-left shunt), resulting in hypoxemia, fatigue, dyspnea, and cyanosis (Circo et al., 2014). Classically, PAVMs manifest as a simple malformation consisting of a single feeding and draining vessel, or in more infrequent cases, as complex malformations consisting of multiple feeding vessels with a predominant area in the bilateral lower lobes of the lung (Othpost et al., 2019). The diagnosis modality can be readily