Hi, Thanks for your query. The most probable cause for such pans you described in the lower left chest and upper abdomen can be : -Costo-chondritis due to inflammation of the lower ribs and muscles. This inflammation can travel along the abdominal muscles originating from the ribs, giving pain in the upper abdomen. -Colitis of the splenic flexture of the large bowel - colon. - Inflammation of the left lower lungs and / or pleura. I would advise you to take a second opinion of a General Surgeon, get investigations done and diagnosed to be treated properly. X-ray of the chest, ultrasonography of the abdomen, blood and urine test. Pain on deep pressure on the lower chest on the lower ribs is classical of costo-chondritis and not seen on any investigations. I would advise you to get an MRI of the painful area, telling the Radiologist to be specifically see for the painful- tender area. This will confirm the diagnosis. I would suggest the following treatment. -Rest to the area by means of strapping with the Adhesive tapes during the deep Expiration phase. This will limit the movement, reduce the pain and give rest for healing to occur. -Anti-inflammatory medicines in full dose as per the weight. -Steroids if required for its strong anti-inflammatory role. -Lasix to reduced the edema. This sort of a treatment helps all my patients. and should help you too.