A 21-year-old man was admitted to our hospital for acute chest pain and dyspnea. On arrival, his blood pressure was 110/40 mmHg and heart rate was 112 beats/min. In the arterial blood gas analysis, pH was 7.43, PaCO2 was 31 mmHg, and PaO2 was 92 mmHg under 10 L/min oxygen inhalation. In the blood tests, blood cell count and renal functions were normal, but lactate dehydrogenase and C-reactive protein levels were high at 590 IU/L and 3.7 mg/dl, respectively. Of the coagulation values, the d-dimer level was high (13.7 μg/ml), and ATIII activity was slightly low (60%), but the activities of protein C and protein S were normal. Plain chest X-ray showed mild pulmonary artery dilatation. Ultrasonic cardiogram (UCG) showed right ventricle overload and pulmonary hypertension (estimated systolic pulmonary artery pressure 60 mmHg). We suspected pulmonary embolism (PE), and performed contrast computed tomography (CT), which revealed massive thrombi in both pulmonary arteries ( Figure 1A). Bilateral perfusion defects were found on perfusion scintigraphy of the lung ( Figure 1B), and we diagnosed PE. In addition, abdominal CT showed a retroperitoneal tumor approximately 10×5 cm (Figure 2A). The inferior vena cava (IVC) was obstructed by the tumor and thrombus existed in the right common iliac vein. We started thrombolysis (urokinase 240,000 U/day for 5 days) followed by heparinization (48,000 U/day). We controlled the APTT at 60-80 s. Under this therapy, his oxygen saturation and symptoms improved each day and on the 3 rd day, arterial blood gas analysis showed that pH was 7.43, PaCO2 was 40 mmHg, and PaO2 was 88 mmHg under room air. The pulmonary artery pressure had also decreased on UCG (estimated systolic pulmonary artery Japan. E-mail: natsuaki@saiseikai-hp.chuo.fukuoka.jp All rights are reserved to the Japanese Circulation Society. For permissions, please e-mail: cj@j-circ.or.jp
Recurrence of Pulmonary Embolism in Young Man With Retroperitoneal Tumor Despite Insertion of Temporary IVC FilterMasahiro Natsuaki, MD; Kotaro Numaguchi, MD; Hideo Tada, MD*; Yuichiro Nakashima, MD**; Masanori Okabe, MD; Yusuke Yamamoto, MD Pulmonary embolism (PE) is a fatal disease that is very rare in young people. A 21-year-old man developed PE because of a retroperitoneal tumor. The inferior vena cava (IVC) was obstructed by the tumor, and thrombus existed in the right common iliac vein. Thrombolysis and heparinization improved his symptoms prior to urgent tumor resection. A temporary IVC filter was inserted the day before the operation, but 8 h later fatal massive PE occurred. At autopsy, the retroperitoneal tumor was revealed as a metastatic choriocarcinoma. Prophylactic use of a temporary IVC filter might have paradoxically induced recurrence of massive PE in this case. (Circ J 2009; 73: 1756 -1758