. Author manuscript; available in PMC: 2021 Jun 1.

Published in final edited form as: Gynecol Oncol. 2020 Apr 1;157(3):619–623. doi: 10.1016/j.ygyno.2020.03.025

Table 2.

Incidence of sentinel lymph node metastases reported by grade and depth of myometrial invasion in endometrioid endometrial carcinoma (n=959)

Depth of invasion	Grade 1 n (%)		Grade 2 n (%)		Grade 3 n (%)
Depth of invasion	ITC	Micro/Macro	ITC	Micro/Macro	ITC	Micro/Macro
None	2/449 (<1)	0/449 (0)	0/61 (0)	0/61 (0)	0/20 (0)	1/20 (5)
Inner half	20/202 (10)	9/202 (4.5)	4/76 (5)	3/76 (4)	2/31 (6)	1/31 (3)
Outer half	19/62 (31)	6/62 (10)	7/41 (17)	8/41 (20)	3/17 (18)	4/17 (24)
Total	41/713 (6)	15/713 (2)	11/178 (6)	11/178 (6)	5/68 (7)	6/68 (9)

ITC, isolated tumor cells

Depth of invasion: inner half defined as <50% myoinvasion; outer half defined as ≥50% myoinvasion

Grade: refers to the International Federation of Gynecology and Obstetrics (FIGO) grading system for endometrial carcinoma