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 - 2 of 2 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. ... 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 ...