Review for 10.1186/s12876-022-02169-1 (2022)

Reviewer’s report
Title: 
Submucosal oesophageal squamous cell carcinoma with lymph node
metastasis: A case report and literature review
Version: 
1 
Date: 
23 May 2021
Reviewer: 
Szu-Chia Liao
Reviewer's report:
1. In your article, It could be better to mention as the endoscopic style mentioned
as "OLYMPUS GIF-H290". What is your style endoscopic ultrasound?
2. You topic mentioned as "Esophageal submucosal squamous cell carcinoma
with lymph node metastasis:A case report and literature review". As we know,
Mucosal and submucosal cancers were classified to be epithelial layer (m1),
proper mucosal layer (m2), muscularis mucosae (m3), upper third of the
submucosal level (sm1), middle third of the submucosal layer (sm2), or the lower
third of the submucosal level (sm3) cancers. In your article, at Line 272,
according to the finding of endoscopic ultrasound, you mentioned the lesion
belonged to muscularis mucosa, which should be m3 lesion, not submucosal
lesion. Therefore, this is not consistent with your pathologic finding and you
topic.
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