What organ is located on the right side of the lower abdomen?

The right lower abdomen primarily contains the cecum, appendix, peritoneum, and ureter; in females, it also includes the right ovary and fallopian tube—components of the uterine adnexa. Common conditions affecting the right lower abdomen are inflammatory diseases and intra-abdominal infections, which may present with abdominal pain, distension, and even nausea, vomiting, and fever. Prompt medical evaluation is essential to identify the underlying cause and initiate appropriate anti-infective therapy. In particular, pain caused by appendicitis requires immediate medical attention and treatment.