名词
中文翻译：小结节
同义词：
['hematoma', 'hematoma']
例句：
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1.The doctor found a petechia on his finger after the surgery.
手术后，医生在他的手指上发现了一个小结节。
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2.She noticed a petechia on her arm after getting hit by a car.
她被车撞后，发现手臂上有一个小血肿。
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3. He had a petechia on his forehead from the fall.
他从摔倒中额头上有一个瘀斑。