Background: Pulmonary arteriovenous malformations are uncommon conditions of abnormal communications between pulmonary arteries and veins, which are most commonly congenital in nature. Although such condition is not extremely rare, it is an challenge in the differential diagnosis of pulmonary problems such as hypoxemia and pulmonary lesions.
Case presentation: We report a meaningful case of a 23-year-old male presented with elevated hemoglobin (23.0 g/dl) on admission. Physical examination revealed cyanosis, digital clubbing and low oxygen saturation on room air. The patient was initially diagnosed as polycythemia vera while the subsequent result of bone marrow aspiration was negative. During further assessment, pulmonary arteriovenous malformations were detected by computed tomographic angiography of pulmonary artery. Lobectomy was successfully performed with significant increase of oxygen saturation from 86% to 98%. The patient received an uneventful postoperative recovery and was followed up for nearly 5 years without recurrence.
Conclusions: Pulmonary arteriovenous malformations should be suspected in the patients with central cyanosis, digital clubbing, polycythemia and pulmonary lesion and without cardiac malformations. Embolization or surgery is highly recommended to reduce the risks caused by pulmonary arteriovenous malformations.
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On 20 Sep, 2020
On 08 Sep, 2020
On 07 Sep, 2020
On 07 Sep, 2020
Posted 30 Jul, 2020
On 23 Aug, 2020
Received 16 Aug, 2020
Received 10 Aug, 2020
Received 10 Aug, 2020
On 04 Aug, 2020
On 03 Aug, 2020
On 03 Aug, 2020
Invitations sent on 01 Aug, 2020
On 27 Jul, 2020
On 27 Jul, 2020
On 26 Jul, 2020
On 26 Jul, 2020
On 20 Sep, 2020
On 08 Sep, 2020
On 07 Sep, 2020
On 07 Sep, 2020
Posted 30 Jul, 2020
On 23 Aug, 2020
Received 16 Aug, 2020
Received 10 Aug, 2020
Received 10 Aug, 2020
On 04 Aug, 2020
On 03 Aug, 2020
On 03 Aug, 2020
Invitations sent on 01 Aug, 2020
On 27 Jul, 2020
On 27 Jul, 2020
On 26 Jul, 2020
On 26 Jul, 2020
Background: Pulmonary arteriovenous malformations are uncommon conditions of abnormal communications between pulmonary arteries and veins, which are most commonly congenital in nature. Although such condition is not extremely rare, it is an challenge in the differential diagnosis of pulmonary problems such as hypoxemia and pulmonary lesions.
Case presentation: We report a meaningful case of a 23-year-old male presented with elevated hemoglobin (23.0 g/dl) on admission. Physical examination revealed cyanosis, digital clubbing and low oxygen saturation on room air. The patient was initially diagnosed as polycythemia vera while the subsequent result of bone marrow aspiration was negative. During further assessment, pulmonary arteriovenous malformations were detected by computed tomographic angiography of pulmonary artery. Lobectomy was successfully performed with significant increase of oxygen saturation from 86% to 98%. The patient received an uneventful postoperative recovery and was followed up for nearly 5 years without recurrence.
Conclusions: Pulmonary arteriovenous malformations should be suspected in the patients with central cyanosis, digital clubbing, polycythemia and pulmonary lesion and without cardiac malformations. Embolization or surgery is highly recommended to reduce the risks caused by pulmonary arteriovenous malformations.
Figure 1
This is a list of supplementary files associated with this preprint. Click to download.
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