lithocyst

A lithocyst is a type of cyst found in the human body, typically in the lungs. It is a small, round, or oval-shaped structure that contains a mineral substance, usually calcium carbonate or calcium phosphate. Lithocysts are usually benign and do not cause any symptoms. They are often discovered incidentally during imaging studies, such as chest X-rays or CT scans, and do not require treatment. However, in rare cases, they can cause symptoms such as coughing, wheezing, or shortness of breath, and may require medical intervention. The exact cause of lithocysts is not fully understood, but they are believed to form as a result of chronic inflammation or irritation in the lungs. They can be found in both the lungs and the pleura, the membrane that lines the lungs and chest cavity.