Noted the history related to a 73 year old female about pain that started a month ago in left mid abdominal area, associated with eating, reduced after an hours in the beginning, weight loss
, history of hiatal hernia and diverticulosis
As per the history that you have provided this looks to be not related to hiatal hernia or diverticulitis
This looks to be to associated with gastritis
with or without ulcer.
This can be easily diagnosed by the following ways:
Upper GI Endoscopy.
Relief with a PPI like Omeprazole
Once the endoscopy is done you will get an exact diagnosis making it possible to have proper management.
Also go for the following:
Soft bland diet.
Small frequent meals.
No stress or anxiety.
Avoid chilly and oily foods.
Walk around for half an hour after food and lay in a upright or head-up position.
Hope I have answered your query. Let me know if I can assist you further.
Dr. T Chandrakant, ENT & General Surgeon