單項選擇題

26歲男性,因摩托車車禍至急診就醫(yī),意識清楚、手腳多處皮膚擦傷,身體檢查時發(fā)現(xiàn)其頭部右耳后乳凸處(mastoid area)有瘀血(ecchymosis)及浮腫,此一發(fā)現(xiàn)顯示病人最可能有下列何種情形?()

A.subdural hematoma
B.basilar skull fracture
C.brain contusion
D.fractured sinus bones

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