The Appearance of a Curvilinear Radiolucent Defect at the Periphery

question 40

Multiple Choice

The appearance of a curvilinear radiolucent defect at the periphery of a lung mass is indicative of __________.

• A) community-acquired pneumonia
• B) chronic interstitial disease
• C) connective-tissue disease
• D) necrotizing cavitation

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Definitions:

Mesoderm

The mesoderm is the middle layer of an embryo in early development, which gives rise to muscles, bones, and much of the circulatory, reproductive, and excretory systems.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the skin and nervous system.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby while removing waste.

Yolk

Nutritious material in many animal eggs.