月归档:十一月 2010

leper colony 麻风病

The Kalaupapa leper colony is seen on the peninsula below the high sea cliffs on the north side of Moloka’i. When Hansen’s disease, caused by Mycobacterium leprae, was introduced into the native Hawaiian population in the mid-19th century, it spread … 继续阅读

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acquired immunodeficiency syndrome 获得性免疫缺陷综合症

This patient developed a worsening, generalized headache over several days’ time. When examined by his physician, he had nuchal rigidity. A CBC showed a WBC count of 2200/uL, Hgb 12.7 g/dL, Hct 36.2%, MCV 92 fL, platelet count 109,000/uL, and … 继续阅读

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abruptio placenta 胎盘早剥

This is a cross section of a term placenta to reveal a large hematoma that covers most of the maternal surface. Such a retroplacental hematoma is known as abruptio placenta. A small hematoma may not compromise fetal viability, but a … 继续阅读

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carotid artery dissection颈动脉切开

Seen here is carotid artery dissection. Such an event may be the cause for stroke in a young adult. The extracranial portion of the carotid is more frequently involved than the intracranial portion. Dissection is often preceded by trauma, even … 继续阅读

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acute proliferative glomerulonephritis急性增生性肾小球肾炎

This electron micrograph of the kidney demonstrates a glomerulus with prominent subepithelial electron dense deposits (“humps”) that can be seen with acute proliferative glomerulonephritis, which is typically postinfectious. The most common infection preceding this condition is group A beta-hemolytic streptococcus … 继续阅读

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Hashimoto thyroiditis 桥本甲状腺炎

The thyroid gland seen here has an abundant lymphocytic infiltrate with lymphoid follicles most characteristic for Hashimoto thyroiditis. The small thyroid follicles are lined by Hürthle cells with abundant pink cytoplasm. This is an autoimmune condition that accounts for most … 继续阅读

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Herpes simplex virus (HSV) infection单纯疱疹病毒(HSV)感染

There are several small, sharply demarcated ulcerations seen in the lower esophagus. Grossly, crops of clear vesicles can evolve to chronic ulceration and induration. Microscopically, the squamous epithelial cells exhibit multinucleation and prominent intranuclear inclusions. The inclusions have a mauve … 继续阅读

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chromosomal abnormality 染色体异常

What karyotype would most likely be present in this stillborn female fetus? There is marked maceration, hydrops, and a large hygroma occupying the posterior neck region. The most likely chromosomal abnormality to produce these findings in a female fetus is … 继续阅读

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a large right hemispheric cerebral infarction右半球大脑梗塞

What event documented by the CT scan resulted in the gross appearance seen here months later? The CT scan reveals a large right hemispheric cerebral infarction. From this view it appears to stem from occlusion of the internal carotid, though … 继续阅读

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giant cavernous hemangioma巨大海绵状血管瘤

[Case contributed by Khaled Al Saad, MD and Norman Chan, MD FRCP(C), Department of Pathology and Laboratory Medicine of King Fahad National Guard Hospital, Riyadh, SAUDI ARABIA] The large hepatic mass seen in the abdominal CT scan is a giant … 继续阅读

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