Abstract：
A male in his late 50s had been complaining of headaches and dizziness for 25 years. He also had episodes of losing consciousness, but had not sought treatment because of financial hardship. He was found in the ocean. Autopsy revealed foamy liquid leaking from his nose and mouth, and pleural effusions. The trachea and bronchi contained the same foamy liquid. The lungs were swollen and edematous, and leaked a large amount of foamy liquid. His cause of death was diagnosed as drowning. In the brain, the veins on the frontal lobe and the temporal pole, each on the right cerebral hemisphere, were dilated. A vascular lesion measuring 5 × 5 × 8 cm was found on the bottom of the right frontal lobe, and was located between the right middle cerebral artery and those veins. This vascular lesion extended to the brain parenchyma, and the basal ganglia of the right cerebrum was displaced outward and upward. The vascular lesions in the brain showed blood vessels of various sizes and shapes, and some of the vessel walls were thickened. The vascular lesion on the right frontal lobe was diagnosed as an arteriovenous malformation (AVM). According to the police investigation, the harbor where his body was found was a place he often came for fishing and walking. The possibility of suicide cannot be ruled out. Moreover, it was considered that his AVM might have rendered him unconscious, causing him to fall into the ocean.
摘要：
一名50多岁的男性25年来一直抱怨头痛和头晕。他也有失去知觉的情节，但由于经济困难而没有寻求治疗。他在海里被发现。尸检显示泡沫液体从他的鼻子和嘴巴漏出，和胸腔积液.气管和支气管含有相同的泡沫液体。肺部肿胀水肿,并泄漏了大量的泡沫液体。他的死因被诊断为溺水。在大脑中,额叶和颞叶上的静脉，每个都在右脑半球，被扩张了。发现右额叶底部有5×5×8cm的血管病变，位于右侧大脑中动脉和静脉之间.这种血管病变延伸到脑实质，右脑基底节向外和向上移位。大脑中的血管病变显示出各种大小和形状的血管，一些血管壁变厚了。右额叶血管病变被诊断为动静脉畸形（AVM）。根据警方的调查,发现他尸体的港口是他经常来钓鱼和散步的地方。不能排除自杀的可能性。此外，有人认为他的AVM可能使他失去知觉，让他掉进了海里.
