Bone metastasis of gastric cancer is relatively uncommon in clinical practice.Moreover,it is all the more unusual for the primary presentation of gastric malignancy to be bone metastasis.Here,we describe a male patient who complained of pain and edema in his right lower extremity.Further assessment by computed tomography and positron emission tomography revealed an abnormally thickened gastric cardia and a giant neoplasm in the right pelvis with bone damage.Consequently,the finding of adenocarcinoma cells in pelvic and cardia biopsy specimens contributed to the diagnosis of pelvic metastasis from gastric cancer.This case report illustrates that stomach cancer has the potential,although far less than breast,prostate and lung cancers,to metastasize to bone.In addition,it highlights the peculiarity of this bone metastasis which is pelvic,solitary and huge. Bone metastasis of gastric cancer is more uncommon in clinical practice. More than, it is all the more unusual for the primary presentation of gastric malignancy to be bone metastasis. Here, we describe a male patient who complained of pain and edema in his right lower extremity . Further assessment by computed tomography and positron emission tomography revealed an abnormally thickened gastric cardia and a giant neoplasm in the right pelvis with bone damage. Conclusion, the finding of adenocarcinoma cells in pelvic and cardia biopsy specimens contributed to the diagnosis of pelvic metastasis from gastric cancer. This case report shows that stomach cancer has the potential, although far less than breast, prostate and lung cancers, to metastasize to bone. In addition, it highlights the peculiarity of this bone metastasis which is pelvic, solitary and huge.