Clinical Outcomes of Indocyanine Green Tracer Using in Laparoscopic Gastrectomy With Extended Lymphadenectomy Beyond D2 for Locally Advanced Gastric Cancer (FUGES-30)

Disease-free survival is calculated from the day of surgery to the day of recurrence or death

Total number of retrieved lymph nodes

The LN dissection rate was determined by the number of patients in whom a LN station was harvested divided by the total number of patients who required retrieval at the corresponding LN station. Within the scope of D2 dissection, LN noncompliance was defined as the absence of LNs that should have been resected from > 1 LN station.

Relationship between the number of fluorescent lymph nodes in group A and total number of lymph nodes in group A

The number of positive lymph nodes in fluorescent lymph nodes is divided by the number of total fluorescent lymph nodes in Group A (True positive rate).

The number of negative lymph nodes in fluorescent lymph nodes is divided by the number of total fluorescent lymph nodes in Group A (false positive rate).

The number of negative lymph nodes in not fluorescent lymph nodes is divided by the number of total not fluorescent lymph nodes in group A (True negative rate).

The number of positive lymph nodes in not fluorescent lymph nodes is divided by the number of total not fluorescent lymph nodes in Group A (false negative rate).

Relationship between the number of fluorescent lymph nodes in group B and total number of lymph nodes in group B

The number of positive lymph nodes in fluorescent lymph nodes is divided by the number of total fluorescent lymph nodes in Group B (True positive rate).

The number of negative lymph nodes in fluorescent lymph nodes is divided by the number of total fluorescent lymph nodes in Group A (false positive rate).

The number of negative lymph nodes in not fluorescent lymph nodes is divided by the number of total not fluorescent lymph nodes in group B (True negative rate).

The number of positive lymph nodes in not fluorescent lymph nodes is divided by the number of total not fluorescent lymph nodes in Group B (false negative rate).

Number of metastatic lymph nodes

Metastasis rate of lymph nodes

Postoperative complications were evaluated within 30 days following surgery. These postoperative complications include gastrointestinal-related complications, incision-related complications, respiratory complications, cardiovascular and cerebrovascular complications, urinary system complications, infection complications, embolism complications, and other complications. The grading of postoperative complications adopts the Clavien-Dindo classification.

Patient died during hospitalization.

3-year overall survival rate

3-year recurrence pattern

Time to first flatus after surgery, time to first ambulation after surgery, time to first liquid diet after surgery, time to first semi-liquid diet after surgery, length of hospital stay after surgery.

Intraoperative complications were defined as bleeding due to named vessel injury, injury to visceral organs, mechanical factor-related problems, cardiopulmonary dysfunction due to hypercapnia, and other complications

the values of hemoglobin, prealbumin, albumin, C-reactive protein, and white blood cell count from peripheral blood before the operation and on postoperative day 1, 3, 5 are recorded.