case_images: PMC11752104_01
case_images: Enhanced computed tomography on arrival. Contrast-enhanced CT showed a large tumor in the middle to lower esophagus. Extravasation of contrast medium toward the esophageal lumen was observed (arrowhead).
case_images: CRIS2025-7736573.001.jpg
case_images: PMC11752104_01_CRIS2025-7736573.001.jpg
case_images: fig1
case_images: Contrast-enhanced CT showed an 11 cm large mass lesion in the middle to lower esophagus with extravasation of contrast media (Figure 1).
case_images: Upper gastroendoscopic images. (a) Endoscopic view of the tumor showed a protruded lesion at the middle thoracic esophagus. (b) Endoscopy showed active bleeding (arrows), but it was difficult to see the bleeding point directly because of the large amount of blood and large size of the tumor.
case_images: CRIS2025-7736573.002.jpg
case_images: PMC11752104_01_CRIS2025-7736573.002.jpg
case_images: fig2
case_images: Emergency upper gastrointestinal endoscopy showed an elevated lesion (Figure 2a) and large clot. Even though the bleeding was active, it was difficult to observe due to the large size of the mass and the bleeding point could not be identified (Figure 2b).
case_images: Angiographic images. (a) Selective angiography of proper esophageal artery showed tumor and pseudoaneurysm (arrowhead) in the lower esophagus. (b) The patient was embolized with gelatin sponges and microcoils, and hemostasis was successfully achieved.
case_images: CRIS2025-7736573.003.jpg
case_images: PMC11752104_01_CRIS2025-7736573.003.jpg
case_images: fig3
case_images: Selective angiography of the proper esophageal artery revealed a hypervascular tumor and pseudoaneurysm of contrast media in the lower esophagus (arrowhead in Figure 3a). Successful hemostasis was obtained by embolizing the proper esophageal artery directly derived from the aorta with gelatin sponge and microcoils (Figure 3b).
case_images: Resected specimen and histopathological examination findings. (a) The lesion was well-demarcated and elevated tumor at lower esophagus and measured 110 x 78 x 52 mm. (b, c) Histopathological examination revealed that basement membrane-like cells were arranged in a fenestrated pattern. (b) HE x 50. (c) HE x 400.
case_images: CRIS2025-7736573.004.jpg
case_images: PMC11752104_01_CRIS2025-7736573.004.jpg
case_images: fig4
case_images: The resected specimen was well-demarcated and elevated tumor and measured 110 x 78 x 52 mm (Figure 4a). Histopathological examination revealed that basement membrane-like cells were arranged in a fenestrated pattern (Figure 4b,c) and led to the diagnosis of basaloid cell carcinoma.