3 Differential diagnosis,investigations,and treatment
A retrospective analysis of this case indicated that the gastric mass
was larger than 2 cm, accompanied by gastrointestinal symptoms, and did
not involve other organs, making resection a reasonable approach.
Additionally, IgG4+ cells can also be found in calcifying fibrous
tumour, gastric stromal tumor as well as other inflammatory and tumor
diseases[2]. Immunostaining did not detect
vimentin or CD117, and diagnostic scans revealed the absence of disease
in additional organs. With the high serum IgG4 level of eggs, a
diagnosis of food-specific IgG4-GID is finally being considered. The
mechanism of Food-specific IgG4-RD remains unclear, and diet therapy is
usually the first treatment option, with hormone therapy even biological
agents considered if symptoms persist or show
improvement[3, 4].Considering food-specific
IgG4-GID, dietary control therapy was performed.