case_images: PMC11756018_01
case_images: Tumor markers. A: Carcinoembryonic antigen; B: Carbohydrate antigen 199. CEA: Carcinoembryonic antigen; CA-199: Carbohydrate antigen 199.
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case_images: PMC11756018_01_100954-g001.jpg
case_images: F1
case_images: Serum carcinoembryonic antigen (CEA): 325.87 ng/mL, carbohydrate antigen (CA) 242: > 220 U/mL, and CA-199: 301.80 U/mL (Figure 1), during a routine health examination on August 23, 2018. Subsequently, on August 27, 2018, the patient underwent an abdominal computed tomography (CT) scan at Nanjing First Hospital. Serum tumor markers, including CEA and CA-199, were above the normal ranges (Figure 1).
case_images: Pathological examination of the ileocecal region of the resected right colon mass specimen (hematoxylin and eosin staining). A: Original magnification, x 10; B: Original magnification, x 40.
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case_images: PMC11756018_01_100954-g002.jpg
case_images: F2
case_images: The postoperative pathological examination showed moderately and poorly differentiated tubular adenocarcinoma in the ileocecal region of right colon cancer; tumor size 7.5 cm x 8.5 cm x 5.0 cm; invasion of cancer tissue outside the serosa; tumor thrombus in vessels; no nerve invasion; local invasion of cancer tissue into the appendix wall; no cancer involvement found at the upper and lower margins; peri-intestinal lymph nodes with cancer metastasis (6/10) (Figure 2).
case_images: Radiologic images of computed tomography and magnetic resonance imaging. A: September 28, 2018 computed tomography (CT) imaging [colorectal liver metastasis (CRLM) 27 mm]; B: October 12, 2018 CT imaging (CRLM 23 mm x 13 mm); C: December 7, 2018 CT imaging (CRLM 20 mm x 12 mm); D: January 11, 2019 CT imaging (CRLM 23 mm x 16 mm); E: February 13, 2019 magnetic resonance imaging (CRLM 25 mm); F: June 26, 2019 CT imaging (CRLM 24 mm x 27 mm); G: September 18, 2019 CT imaging (CRLM 25 mm x 30 mm); H: October 11, 2022 CT imaging (CRLM not observed). R: Right; L: Left; A: Anterior; P: Posterior; S: Superjacent; I: Inferior.
case_images: 100954-g003.jpg
case_images: PMC11756018_01_100954-g003.jpg
case_images: F3