软组织内的局限性出血被认为是血肿。这是趾甲下面损伤引起的小血肿。由于是静脉血而使其呈现蓝色。
A localized collection of blood outside the vascular system within tissues is known as a hematoma. Here is a small hematoma under the toenail following trauma, which has a bluish appearance from the deoxygenated blood within it.