04 March 2022
: Case report 
Dramatic Response to Trastuzumab Deruxtecan Rechallenge in a Patient with HER2-Positive Gastric Cancer: A Case Report
Unusual setting of medical care
Takatsugu Ogata1ABCDEF, Yasuko Fujita
2BCD, Kei Muro1ABCDE*
DOI: 10.12659/AJCR.935600
Am J Case Rep 2022; 23:e935600
Figure 2. Upper gastrointestinal endoscopy. (A) Before rechallenge with trastuzumab deruxtecan (T-DXd), gastric wall thickening in the cardia of the stomach was observed. (B) After four cycles of T-DXd, shrinkage of the primary tumor was observed.