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Malignant lesions of esophague. (a) carcinoma in situ of the esophagus; (b) squamous cell carcinoma of the esophagus; (c) ordinary adenocarcinoma of the esophagus; (d) signet ring cell carcinoma of the esophagus; (e) small cell carcinoma of the esophagus; (f) amelanotic melanoma of the esophagus; (g) adenoid cystic carcinoma of the esophagus. HE, X100.
