Is gastrectomy mandatory for all residual or recurrent gastric cancer following endoscopic resection? A large-scale Korean multi-center study.
OBJECTIVE
To clarify optimal treatment guidelines for residual or local recurrence after endoscopic resection (ER).


METHODS
Eighty-six patients underwent gastrectomy due to incomplete ER and local recurrence after ER. The pathological findings of ER and gastrectomy specimens were analyzed.


RESULTS
The cause of gastrectomy was categorized into five groups; submucosal (sm) invasion without margin involvement, positive margin, margin not evaluable, high risk of lymph node metastasis and local recurrence after ER. According to the pathological findings of gastrectomy specimens, remnant cancer and lymph node metastases were found in 56 (65.1%) and in 5 patients (5.8%), respectively. At 10 gastrectomy specimens which were sm invasion without margin involvement, the scattered residual cancer cells were found around the ulcer scar in 2 (20%) patients. In 11 of 44 margin involvement specimens, no residual cancer or lymph node metastasis was found. In patients with local recurrence, mean duration from ER to surgery was 14.8 months, and 19% of patients were found to have sm or deeper depth of invasion.


CONCLUSIONS
Gastrectomy with lymph node dissection should be performed in patients with sm invasion with or without margin involvement. However, minimal approach other than gastrectomy could further be applied to selected patients.
Department of Surgery, KangNam St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea.
Kyo Young
KY
Song
Woo Jin
WJ
Hyung
Hyung Ho
HH
Kim
Sang Uk
SU
Han
Gyu Seok
GS
Cho
Seung Wan
SW
Ryu
Hyuk Joon
HJ
Lee
Min Chan
MC
Kim
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000473:pathology* / Q000556:secondary / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005743:Gastrectomy; D005773:Gastroscopy; D019983:Guideline Adherence / Q000592:standards; D006801:Humans; D010535:Laparoscopy; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology / Q000601:surgery*; D018365:Neoplasm, Residual / Q000473:pathology / Q000601:surgery*; D017410:Practice Guidelines as Topic; D011446:Prospective Studies; D012086:Reoperation; D013274:Stomach Neoplasms / Q000473:pathology* / Q000601:surgery*; D016896:Treatment Outcome