What does the suffix '-itis' commonly indicate in medical terminology?

The suffix '-itis' is primarily used in medical terminology to indicate inflammation of a specific organ or tissue. Conditions such as gastritis (inflammation of the stomach), arthritis (inflammation of the joints), and dermatitis (inflammation of the skin) all highlight the role of '-itis' in describing inflammatory processes.

The term effectively conveys that an underlying condition involves inflammation, which is a crucial response by the body to injury or infection. Understanding this suffix allows healthcare professionals and oncology data specialists to accurately interpret and document various disease states, including those related to cancer and its complications.

While the other options refer to different medical concepts—presence of blood, formation of stones, and dilation or expansion—they do not relate to inflammation, which is central to the meaning of '-itis.' Therefore, the correct identification of this suffix is essential for clear and effective communication in the medical field.