Mar 17, 2021 · Hematomas are a collection of blood outside of a blood vessel. There are several types of hematomas, which are often described by their location (for example, under the fingernail, in the liver, spine, and ear). The most common type of hematoma is due to trauma. Read about the symptoms, signs, causes, diagnosis, treatment, and prevention of hematomas. An abdominal hernia occurs when an organ or other piece of tissue protrudes through a weakening in one of the muscle walls that enclose the abdominal cavity.The sac that bulges through the weak area may contain a piece of intestine or fatty lining of the colon (omentum) if the hernia occurs in the abdominal wall or groin. In order to find out a bit more about the subreddit, we decided to take a look at the origin of its name. The internet database Know Your Meme describes "Don't Dead Open Inside" as a trope that involves incorrectly reading different signs and labels "which include two or more lines of text and have no clear way to tell the order in which the words should be read".