Refer to the image.What esophageal pathologic condition is demonstrated? 
From Eisenberg RL: Gastrointestinal radiology: a pattern approach,Philadelphia,1990,Lippincott.
Definitions:
Agreeable-extraverted
A personality description pertaining to individuals who are both cooperative, friendly (agreeable) and outgoing, energetic (extraverted).
Personality Disorders
Mental health conditions characterized by unhealthy and rigid patterns of thinking, functioning, and behaving that deviate from cultural expectations and cause distress or impairment.
DSM-5
The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, a comprehensive classification and diagnostic tool for mental disorders used by mental health professionals.
Clusters
Groups of objects or individuals that are close to each other or share common characteristics, forming a distinct segment apart from others.
Q20: Ecchymosis<br>A)An accumulation of blood in the tissue<br>B)Large
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Q37: Refer to the image below.What developmental anomaly
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Q93: In the figure above,what are the variables?<br>A)