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Surgical Case Reports
Fig. 3 | Surgical Case Reports

Fig. 3

From: CA19-9-producing esophageal adenocarcinoma originating from the esophageal cardia of the mid-thoracic esophagus: a case report

Fig. 3

Histopathologic and immunostaining analysis. a Histopathologic analysis revealed a 50 × 40 mm moderately differentiated adenocarcinoma. b Immunostained sections showing increased diffuse expression of CA19-9 in the main tumor and in all three metastatic lymph nodes. c, d Immunostaining was also positive for MUC5AC (c), epithelial-type mucus core proteins of the gastric gland fossa, and MUC6 (d), a glandular-type mucus core protein present in the pyloric and cardiac glands

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