月归档:五月 2013

Paraganglion in Prostate Biopsies -前列腺活检副神经节免疫组化突触素阳性 Immunoreactivity for Synaptophysin

When present in prostate needle biopsies, paraganglia must be distinguished from high-grade prostatic adenocarcinoma. Prominent vascular pattern, degenerative atypia, lack of immunoreactivity for PSA and PSAP, strong immunoreactivity for neuroendocrine markers (image shows positivity for Synaptophysin), presence of sustentacular cells … 继续阅读

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书法60

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Paraganglion in Prostate Biopsies前列腺活检副神经节2

Paraganglia are composed of cells with clear or amphophilic cytoplasm, inconspicuous nucleoli, and a prominent vascular pattern. They are present within smooth muscle bundles away from benign acini. When present in prostate needle biopsies, paraganglia must be distinguished from high-grade … 继续阅读

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Paraganglion in Prostate Biopsies前列腺活检副神经节

Paraganglia are usually located external to the prostate near postero-lateral neurovascular bundles. Occasionally, they may be sampled in prostate needle biopsies.

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Ganglia in Prostate Biopsies前列腺组织中神经节3

Another example of ganglion sampled in a prostate needle biopsy.

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Ganglia in Prostate Biopsies前列腺组织中神经节2

Ganglia found in prostate needle biopsies should not be mistaken for high-grade carcinoma. Note the intracellular pigment and satellite cells around neurons.

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Ganglia in Prostate Biopsies前列腺组织中神经节

Ganglia are usually found in the fibromuscular tissue external to the prostate; sometimes, they may be found within the outer regions of prostate itself. In needle biopsies, they are usually located at one of the ends of the core.

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书法59

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Skeletal Muscle in Prostate Biopsies 前列腺活检骨骼肌

Skeletal muscle fibers of the urogenital diaphragm extend into the apical and anterior peripheral regions of the prostate. Not infrequently, skeletal muscle fibers are seen in needle biopsies from those regions

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书法58

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