月归档:五月 2011

Metaplasia of the normal esophageal squamous mucosa 正常食管粘膜的鳞状上皮化生

Metaplasia of the normal esophageal squamous mucosa has occurred here, with the appearance of gastric type columnar mucosa.

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Metaplasia of laryngeal respiratory epithelium喉部呼吸道上皮化生

Metaplasia of laryngeal respiratory epithelium has occurred here in a smoker. The chronic irritation has led to an exchanging of one type of epithelium (the normal respiratory epithelium at the right) for another (the more resilient squamous epithelium at the … 继续阅读

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Prostate gland hyperplasia 前列腺腺体增生

Here is one of the nodules of hyperplastic prostate, with many glands along with some intervening stroma. The cells making up the glands are normal in appearance, but there are just too many of them.

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Prostatic hyperplasia 前列腺增生

This is an example of prostatic hyperplasia. The normal adult male prostate is about 3 to 4 cm in diameter. The number of prostatic glands, as well as the stroma, has increased in this enlarged prostate seen in cross section. … 继续阅读

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Endometrial hyperplasia 子宫内膜增生

The prominent folds of endometrium in this uterus opened to reveal the endometrial cavity are an example of hyperplasia. Cells forming both the endometrial glands and the stroma have increased in number. As a result, the size of the endometrium … 继续阅读

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Testicular atrophy 睾丸萎缩

The testis at the right has undergone atrophy and is much smaller than the normal testis at the left.

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This is a trichrome stain 这是三色染色法

Some of these skeletal muscle fibers here show atrophy, compared to normal fibers. The number of cells is the same as before the atrophy occurred, but the size of some fibers is reduced. This is a response to injury by … 继续阅读

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Disseminated intravascular coagulation(DIC)弥漫性血管内凝血(DIC)

Disseminated intravascular coagulation (DIC) is a consequence of widespread activation of the coagulation system through endothelial injury and/or release of thromboplastic substances into the circulation. DIC can be seen with severe infections, trauma, neoplasia, and obstetric complications, among others. Small … 继续阅读

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Hematoma 血肿

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.

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Of hemorrhage in the skin are called ecchymoses在皮肤上的出血瘀被称为淤斑

The blotchy areas of hemorrhage in the skin are called ecchymoses (singular ecchymosis). Ecchymoses are larger than petechiae. In between in size are hemorrhages called purpura. The terms ecchymosis and purpura are often used interchangeably. They can appear with coagulation … 继续阅读

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