Unraveling the characteristics of early esophageal neuroendocrine carcinoma using multi-model endoscopy: A retrospective study of serial cases

Table 1 Clinical data and endoscopic findings of 4 cases with early esophageal neuroendocrine carcinoma

Case	Sex	Age (year)	Presentation	Examination	Location (cm)	Size (cm)
1	Male	60	No symptoms	Tumor markers were normal; contrast-enhanced CT showed no definite mass	30	0.94 × 0.36
2	Male	64	Retrosternal discomfort	Tumor markers were normal; contrast-enhanced CT showed no definite mass	27	1.3 × 0.9
3	Female	70	Recurrent retrosternal discomfort with abdominal distension and chest tightness	Tumor markers were normal; contrast-enhanced CT revealed mild mucosal enhancement in the mid-esophagus and a small nodule in the anterior mediastinum	28	1.2 × 0.7
4	Female	70	Dysphagia	Tumor markers were normal; contrast-enhanced CT showed no definite mass	30	0.5 × 0.6

CT: Computed tomography.