Sarcomatoid carcinoma is rarely diagnosed as gallbladder cancer. Its aggressive nature, due to the characteristics of both sarcoma and carcinoma, results in a poor prognosis. We report a case of gallbladder sarcomatoid carcinoma in an 82-year-old male who was referred to our hospital for evaluation of gallbladder cancer observed on abdominopelvic computed tomography. The characteristics of the cancer were not confirmed after several imaging modalities. The surgically resected tumor was positive for both cytokeratin and vimentin as revealed via immunohistochemical staining, and a sarcomatoid carcinoma was finally diagnosed. The role of chemotherapy has not yet been identified. Therefore, radiation therapy is planned to reduce the risk of recurrence.

INTRODUCTION
CASE
DISCUSSION
요 약
ORCID
REFERENCES

• 진소영(순천향대학교 부속 서울병원 병리과) | Seong Sook Hong (Pathology Soonchunhyang University Seoul Hospital, Seoul, Korea)
• 홍성숙(순천향대학교 부속 서울병원 영상의학과) | Chong-Woo Chu (Radiology Soonchunhyang University Seoul Hospital, Seoul, Korea)
• 주종우(순천향대학교 부속 서울병원 외과) | Chong-Woo Chu (Surgery Soonchunhyang University Seoul Hospital, Seoul, Korea)
• 이민영(순천향대학교 부속 서울병원 내과) | Min Young Lee (Departments of Soonchunhyang University Seoul Hospital, Seoul, Korea)
• 조영덕(순천향대학교 부속 서울병원 내과) | Young Deok Cho (Departments of Soonchunhyang University Seoul Hospital, Seoul, Korea)
• 차상우(순천향대학교 부속 서울병원 내과) | Sang-Woo Cha (Departments of Soonchunhyang University Seoul Hospital, Seoul, Korea) Corresponding author
• 조윤호(순천향대학교 부속 서울병원 내과) | Yoon-Ho Cho (Departments of Soonchunhyang University Seoul Hospital, Seoul, Korea)