case_images: PMC8172310_01
case_images: Large undifferentiated carcinomatous cells (blue star) infiltrating the small intestine wall; normal mucosal glands at the left bottom (red arrow) HE x100.
case_images: CRIS2021-9999605.001.jpg
case_images: PMC8172310_01_CRIS2021-9999605.001.jpg
case_images: fig1
case_images: Cytokeratin 20, CD34, thyroid transcription factor-1, CD117 (c-kit,) and HMB45 were all negative (Figure 1).
case_images: CT scan image of the right lung tumor (red arrow) extending to the three lobes with interbronchial lymph nodes.
case_images: CRIS2021-9999605.002.jpg
case_images: PMC8172310_01_CRIS2021-9999605.002.jpg
case_images: fig2
case_images: A subsequent thoracic CT scan was performed to complete the extension report, which showed a polylobed mass extending to the three lobes of the right lung measuring 6 cm, with right interbronchial lymph nodes (Figure 2).
case_images: Pulmonary carcinoma: at the left top: small cell component (red arrow); at the right bottom: solid large cell component (blue star), HE x100.
case_images: CRIS2021-9999605.003.jpg
case_images: PMC8172310_01_CRIS2021-9999605.003.jpg
case_images: fig3
case_images: Vascular invasion and spread through air spaces were also noted (Figure 3).