Stomach :
The stomach is a muscular organ situated in the upper abdomen which starts where esophagus ends. It secretes acid and enzymes which helps in the digestion of the food.
Upper abdominal pain, the fullness of abdomen, regurgitation of the food or acid, vomiting, etc are the main symptoms of problems with stomach.
Hyperacidity due to many reasons like spicy food, cancer or some tumor will damage the stomach wall in the form of ulcer, which may bleed, chances of perforation- a hole in the stomach wall which all need to get urgent treatment.
Endoscopy, sonography and sometimes CT scan or Barium studies help in diagnosing the condition.
Pancreas :
The pancreas is the important organ in the body which lies behind the stomach in the abdomen. It produces enzymatic chemicals which help to digest food. Alcohol, some parasites and Gall bladder stones, and pancreatic duct stones are responsible for infection in the Pancreas. It will give you upper abdominal pain, vomiting and if infection increases, its own enzymes will digest it. In the treatment, it needs bowel rest, pain killers, antibiotics and close observation.
Liver Abscess :
Liver Abscess is pus-filled cavity- an area in the liver which may be due to some abdominal pathology or blood-borne from the portal vein or some parasite like E. histolytica.
80-90% are Pyogenic and 10-20% are Amoebic Liver Abscess. Treatment of which is antibiotics, sonography guided aspiration- withdrawing pus or if rupture than surgery.
Small and Large intestines :
Small and Large Intestines are ended organs at the digestive system. Small intestines are up to 7 meters and Large intestines are up to 1.5 meters long.
There are many diseases which are affecting this long organ. Vomiting, fever, distention, pain in abdomen, diarrhea, constipation,.Etc can be symptoms.
There can be infection bacterial or parasitic, ulcer, typhoid, amoebiasis, obstruction, TB, cancer, IBS- inflammatory Bowel syndrome, etc can occur in these organs.
To diagnosis, one needs blood tests, x rays, sonography, CT scan, and endoscopy. Diagnostic Laparoscopy is one of the important tools in diagnosis.