BACKGROUND Gastric cancer is the third most lethal malignant tumor worldwide.Metastasis has always been a major cause of poor prognosis.Epidemiological evidence shows that the most common sites for metastasis of gastr...BACKGROUND Gastric cancer is the third most lethal malignant tumor worldwide.Metastasis has always been a major cause of poor prognosis.Epidemiological evidence shows that the most common sites for metastasis of gastric carcinoma are the liver(48%),peritoneum(32%),lung(15%),and bone(12%);however,subcutaneous metastasis is are and occurs in approximately 0.8%of cases.We report a rare case of armpit subcutaneous metastasis of gastric cancer.The best surgical window was missed,as a result of lacking attention of the mass.CASE SUMMARY A 69-year-old man who had previously undergone radical gastrectomy and received eight cycles of oral chemotherapy for gastric cancer showed a rapidly growing mass in his the left armpit;within just 3 mo,the mass grew to a size of 6.9 cm×4.4 cm×5.7 cm.Color Doppler ultrasonography and Positron emission tomography/computed tomography prompted the possibility of metastasis of the malignancy.Fine needle aspiration biopsy guided by color Doppler ultrasound showed the presence of cancer cells in the mass.Immunohistochemical examination showed CDX-2(+),PCK(+),CK20(+),CK7(-),and TTF(-),which supported the metastasis of gastric cancer.Considering the risk of resection,the patient did not undergo surgical treatment.CONCLUSION The case indicates that unidentified subcutaneous masses in patients with a history of gastric cancer should be carefully evaluated.展开更多
文摘BACKGROUND Gastric cancer is the third most lethal malignant tumor worldwide.Metastasis has always been a major cause of poor prognosis.Epidemiological evidence shows that the most common sites for metastasis of gastric carcinoma are the liver(48%),peritoneum(32%),lung(15%),and bone(12%);however,subcutaneous metastasis is are and occurs in approximately 0.8%of cases.We report a rare case of armpit subcutaneous metastasis of gastric cancer.The best surgical window was missed,as a result of lacking attention of the mass.CASE SUMMARY A 69-year-old man who had previously undergone radical gastrectomy and received eight cycles of oral chemotherapy for gastric cancer showed a rapidly growing mass in his the left armpit;within just 3 mo,the mass grew to a size of 6.9 cm×4.4 cm×5.7 cm.Color Doppler ultrasonography and Positron emission tomography/computed tomography prompted the possibility of metastasis of the malignancy.Fine needle aspiration biopsy guided by color Doppler ultrasound showed the presence of cancer cells in the mass.Immunohistochemical examination showed CDX-2(+),PCK(+),CK20(+),CK7(-),and TTF(-),which supported the metastasis of gastric cancer.Considering the risk of resection,the patient did not undergo surgical treatment.CONCLUSION The case indicates that unidentified subcutaneous masses in patients with a history of gastric cancer should be carefully evaluated.
