A Case of Type Φ-Isep Esophageal Adenosquamous Carcinoma Originated from Esophageal Proper Gland Duct

Toko Jotsuka¹⁾²⁾, Seiji Igarashi²⁾, Hideaki Shimizu¹⁾, Yoshiro Ogata¹⁾

Department of Surgery¹⁾and Department of Pathology²⁾, Tochigi Cancer Center

We report a case of Φ-Isep esophageal adenosquamous carcinoma originating from the esophageal proper gland duct. A 61-year-old man with a protruding lesion of the esophagus was admitted to Tochigi Cancer Center. He had no symptoms. By endoscopic examination, a nodular lesion was revealed in the lower esophagus. This lesion was Φ-I type according to endoscopic gross classification. Esophagectomy was performed. The tumor was 16×10 mm in size and completely covered with normal esophageal epithelium, and therefore was of Φ-Isep type according to histological gross classification. Microscopically, the majority of tumor cells were tubular in structure and contained mucin, similar to the esophageal proper gland duct, while some showed a keratinizing tendency. Moreover immunohistological findings and electron microscopic examination clearly demonstrated the tumor to be an adenocarcinoma. From the histological findings, we concluded that the tumor was an adenosquamous carcinoma originating from the esophageal proper gland duct.

Key words
esophageal cercinoma, adenosquamous carcinoma, esophageal proper gland duct

Reprint requests
Toko Jotsuka Department of Surgery, Tochigi Cancer Center
4-9-13 Yonan, Utsunomiya-city, 320-0834, JAPAN

Accepted
July 22, 1998

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