1)Oyama T, Inoue H, Arima M, et al. Prediction of the invasion depth of superficial squamous cell carcinoma based on microvessel morphology:magnifying endoscopic classification of the Japan Esophageal Society. Esophagus 14:105-112, 2017
2)Kumagai Y, Toi M, Inoue H. Dynamism of tumour vasculature in the early phase of cancer progression:outcomes from oesophageal cancer research. Lancet Oncol 3:604-610, 2002
3)Kumagai Y, Kawada K, Yamazaki S, et al. Prospective replacement of magnifying endoscopy by a newly developed endocytoscope, the “GIF-Y0002”. Dis Esophagus 23:627-632, 2010
4)Inoue H, Honda T, Yoshida T, et al. Ultra-high magnification endoscopy of the normal esophageal mucosa. Dig Endosc 2:134-138, 1996
5)Kumagai Y, Inoue H, Nagai K, et al. Magnifying endoscopy, stereoscopic microscopy and the microvascular architecture of superficial esophageal carcinoma. Endoscopy 34:369-375, 2002
6)Noda T. Angioarchitectual study of the esophageal varices, with special reference to variceal rupture. Virchows Arch A Pathol Anat Hostopathol 404:381-392, 1984
7)Aharinejad S, Lametschwandtner A, Franz P, et al. The vascularization of the digestive tract studied by scanning electron microscopy with special emphasis on the teeth, esophagus, stomach, small and large intestine, pancreas, and liver. Scanning Microsc 5:811-849, 1991
8)Minami H, Inoue H, Ikeda H, et al. Usefulness of background coloration in detection of esophago-pharyngeal lesions using NBI magnification. Gastroenterol Res Pract 2012:529782, 2012
9)Kanzaki H, Ishihara R, Ishiguro S, et al. Histological features responsible for brownish epithelium in squamous neoplasia of the esophagus by narrow band imaging. J Gastroenterol Hepatol 28:274-278, 2013
10)Kumagai Y, Sobajima J, Higashi M, et al. Angiogenesis in superficial esophageal squamous cell carcinoma:Assessment of microvessel density based on immunostaining for CD34 and CD105. Jpn J Clin Oncol 44:526-533, 2014
11)Kumagai Y, Sobajima J, Higashi M, et al. Tumor-associated macrophages and angiogenesis in early stage esophageal squamous cell carcinoma. Esophagus 13:245-253, 2016
12)Kuwano H, Sonoda K, Yasuda M, et al. Tumor invasion and angiogenesis in early esophageal squamous cell carcinoma. J Surg Oncol 65:188-193, 1997