A member asked:

Is it true that if a structure is hypoechoic, it consists mostly of air or fluid? so why are pancreatic tumors usually hypoechoic in ultrasounds?

5 doctors weighed in across 2 answers
Dr. Clarence Grim answered

Specializes in Endocrinology

Ultrasound: 21 F Is it true that if a structure is hypoechoic, it consists mostly of air or fluid? So why are pancreatic tumors usually hypoechoic in ultrasounds? ANS: It is best to discuss this with your Dr and the ultrasound tech as the terms mean different things to different people. Tumors can be hypo echoic because they are not normal.

Answered 11/3/2016

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Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

It is not true.: Air completely reflects the US beam so it has no internal echogenicity. Depending on other characteristics, a hypoechoic structure could be a solid mass or fluid filled. Most solid tumors are hypoechoic relative to adjacent tissue.

Answered 11/10/2016

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