Lowly differentiated adenocarcinoma is actually a pathologic subtype of gastric cancer. If you look at the clinical symptoms, there is no significant difference from other gastric cancers.
Generally, in clinical practice, symptoms of gastric cancer are judged in terms of staging. Most early stage hypofractionated cancers of the stomach have no obvious uncomfortable symptoms or just have symptoms similar to gastritis, such as nausea, vomiting, early satiety, belching, etc., so it is difficult to attract attention and not easy to diagnose early.
As the disease progresses to the progressive stage of gastric cancer, ulcer-like symptoms, such as pain, will appear, only more irregular than the pain of an ulcer.
After the disease continues to progress, there can be loss of appetite, weakness, and weight loss, as well as pain behind the sternum or in the back, and in some patients, bleeding pyloric obstruction. These symptoms vary and manifest themselves depending on the location of the tumor.
In the middle and late stages, when the tumor continues to progress deeper and blood vessels are invaded and ruptured, symptoms of gastrointestinal bleeding such as vomiting blood, vomiting coffee-like material, and black stools may occur.