**Core Concept**
Aseptic peritonitis refers to an inflammatory condition of the peritoneum, the lining of the abdominal cavity, that is not caused by a bacterial infection. This condition often arises due to chemical irritation or the introduction of non-infectious substances into the peritoneal cavity.

**Why the Correct Answer is Right**
Aseptic peritonitis can occur due to various reasons such as the introduction of contrast agents during imaging studies, such as CT scans or barium enemas, or as a result of the leakage of urine or bile into the peritoneal cavity. The introduction of these substances triggers a chemical peritonitis, leading to inflammation and irritation of the peritoneum. The peritoneal lining reacts to the irritant by releasing chemical mediators, such as histamine and bradykinin, which cause vasodilation, increased vascular permeability, and the migration of leukocytes to the affected area.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it refers to a type of bacterial infection of the peritoneum, which is not aseptic in nature.
* **Option B:** This option is incorrect as it refers to a different type of peritoneal inflammation, which is often associated with a bacterial infection.
* **Option D:** This option is incorrect as it refers to a condition characterized by the accumulation of fluid in the peritoneal cavity, which is not necessarily an inflammatory condition.

**Clinical Pearl / High-Yield Fact**
Remember that aseptic peritonitis can be caused by various non-infectious agents, including contrast agents, urine, and bile, and can be a complication of various medical procedures.

**Correct Answer: C.**