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Fig. 3 | Surgical Case Reports

Fig. 3

From: Diagnosis and clinical implication of collision gastric adenocarcinomas: a case report

Fig. 3

Histopathological findings of the resected specimen. a-1–a-4 Case 1: a lesion with a poorly differentiated adenocarcinoma (por) collided with a lesion with a moderately differentiated tubular adenocarcinoma (tub2). a-1 Loupe image (hematoxylin–eosin [HE]), a-2 por (HE, × 40), a-3 border of the two lesions (HE, × 100), a-4 tub2 (HE, × 40) b-1–b-4 Case 2: a lesion with tub2 collided with a lesion with poorly differentiated adenocarcinoma (solid type, por1). b-1 Loupe image (HE), b-2 tub2 (HE, × 100), b-3 border of the two lesions (HE, × 40), b-4 por1 (HE, × 100). c-1–c-4 Case 3: a lesion with poorly differentiated adenocarcinoma (non-solid type, por2) collided with a lesion with well-differentiated tubular adenocarcinoma (tub1). c-1 Loupe image (HE, c-2 por2 (HE, × 100), c-3 border of the two lesions (HE, × 40), (c-4) tub1 (HE, × 100). d-1–d-4 Case 4: two tumors were similar tub2; however, they had a different positivity for CK 7. d-1 Loupe image (HE), d-2 CK positive (× 40), d-3 border of the two lesions (× 40), d-4 CK 7-negative (× 40). e-1–e-4 Case 5: Two tumors were similar tub2; however, one tumor was CK 7-positive and MUC2-negative; and the other was CK 7-negative and MUC2 focally positive. e-1 Loupe image (HE), e-2 CK 7 staining (× 20), e-3 border of the two lesions (HE, × 40), e-4 MUC2 staining (× 20)

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