1. Extensive GI tract involvement of Ewing's sarcoma/peripheral primitive neuroectodermal tumor in an octogenarian 
Pei-Ying Lin, MD, Jin-Yuan Shih, MD, PhD, Mu-Zon Wu, MD, Yu-Ting Chang, MD, Pan-Chyr Yang, MD, PhD 
Gastrointestinal Endoscopy 
Volume 67, Issue 7, Pages (June 2008)
DOI: /j.gie
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Figure 1
Posteroanterior plain chest radiograph, with the patient standing, showing increased retrocardiac density and bilateral pleural effusion.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

3. Figure 2
A, B, Chest CT showing a heterogenous huge tumor mass extending from the thorax to the abdomen.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

4. Figure 2
A, B, Chest CT showing a heterogenous huge tumor mass extending from the thorax to the abdomen.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

5. Figure 3 EGD showing multiple ulcerative tumors of the duodenum.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

6. Figure 4
Histopathology examination showing (A) small, blue, round tumor cells (H&E, orig. mag. ×200) that (B) were positive for CD99 (PAP, orig. mag. ×200).
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

7. Figure 4
Histopathology examination showing (A) small, blue, round tumor cells (H&E, orig. mag. ×200) that (B) were positive for CD99 (PAP, orig. mag. ×200).
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions