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Fig. 1 | Radiation Oncology

Fig. 1

From: Microscopic tumor spread beyond (echo)endoscopically determined tumor borders in esophageal cancer

Fig. 1

a: Pre-operative CT scan of patient 3 in coronal view with caudal fiducial marker visible (indicated by the arrow). b: Fresh, unfixed esophageal specimen after surgical removal of patient 3. Blue inked area: (echo)endoscopically determined tumor area between both (echo)endoscopically determined tumor borders. Arrows indicate fiducial marker positions cranially and caudally, demarcated externally with green beads. c: Interior of the esophageal specimen of patient 3, after longitudinal opening and fixation. Blue inked area: (echo)endoscopically determined tumor area. Green overlay: area with residual tumor (≥Mandard 3). Asterisk indicates area examined for macroscopic and microscopic tumor spread

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