The pain in the lower right corner of the chest can be seen in right lower pneumonia, pleurisy and hepatobiliary system diseases.1. In right lower pneumonia, the patient may have fever, cough, sputum, chest pain and dyspnea.2. Chest pain is a pleural-like pain caused by pneumonia involving the pleura and is associated with breathing. Pleurisy combined with a small amount of pleural effusion will also cause pain in the lower right corner of the chest, and is similar to the symptoms of pneumonia involving the pleura. The pain will also appear when there are tumors in the liver or liver abscess, biliary ductitis, cholecystitis, gallbladder stones and other diseases.