Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Results 1 - 5 of 5 for Firm muscles
  1. ... correctly. Instead of the muscle being smooth and firm, the cardiac muscle in the left ventricle is thick and appears ... ventricular noncompaction. Normally, during development before birth, ... becoming smooth and firm. Variants in certain genes likely lead to changes ...
  2. ... ventricular noncompaction. During normal development before birth, cardiac muscle gets compacted, becoming smooth and firm. MYH7 gene mutations likely lead to changes in ...
  3. ... ventricular noncompaction. During normal development before birth, cardiac muscle gets compacted, becoming smooth and firm. MYBPC3 gene mutations likely lead to changes in ...
  4. ... sarcoma, which are cancers that affect skin, fat, muscle, and similar tissues.In dermatofibrosarcoma protuberans, the tumor most often starts as a small, firm patch of skin, usually 1 to 5 centimeters ...
  5. ... other materials. Buildup of this material can cause firm lumps of noncancerous tissue (nodules) under the skin ...