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Brain Metastases Characteristics

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Questions and Answers

What is a common feature of the boundary between a tumor and brain parenchyma?

Blurry boundaries without any surrounding tissue reaction

Contains well-defined microscopically with surrounding reactive gliosis (correct)

No differentiation under a microscope

Ill-defined microscopically

What is a potential effect of metastases on the nervous system?

Generalized effects on distant organs

Involvement of both peripheral and central nervous systems (correct)

Paraneoplastic syndromes involving the brain only

Localized effects only

When do paraneoplastic syndromes typically occur in relation to malignant neoplasms?

Preceding the clinical recognition of the neoplasm (correct)

Concurrently with the clinical recognition of the neoplasm

During the metastatic phase of the neoplasm

After the neoplasm has been fully treated

Which term describes a condition where cancer cells spread to the meninges?

Meningeal carcinomatosis Signup and view all the answers

What is a distinguishing feature of brain metastases in relation to tumor growth?

Rapid progression compared to primary tumors Signup and view all the answers

How are spindle cells arranged in Antoni A?

In fascicles with their nuclei palisade along nuclear-free zones Signup and view all the answers

What structure is formed by the spindle cells in Antoni A?

Verocay bodies Signup and view all the answers

What is the characteristic arrangement of nuclei in Antoni A?

Palisading along nuclear-free zones Signup and view all the answers

What distinguishes Verocay bodies in Antoni A?

Nuclei palisading along nuclear-free zones Signup and view all the answers

Which term best describes the appearance of spindle cells in Antoni A?

Arranged in fascicles with verocay bodies Signup and view all the answers