A Clinicopathologic Analysis of Decidual Polyps: A Potentially Problematic Diagnosis

Table 1

Summary of the clinic-pathological features of the decidual polyp.

		Term birth (n = 52)	Delivered 28–37 weeks (n = 9)	Delivered <28 weeks (n = 12)		Artificial abortion (n = 134)	Embryo arrest (n = 43)	Total (n = 250)
Clinical information	Age (y)	31 (27.5, 33.5)	32 (30, 35)	31.5 (29.5, 33.5)	0.116	33 (30, 37)	34 (30, 37)	33 (29.75, 36)
	G	2 (1, 2)	2 (1, 2)	2 (1, 2.5)	0.634	2 (2, 3)	2 (1,3)	2 (1, 3)
	P	0 (0,1)	1 (0,1)	1 (0,1)	0.825	1 (1, 1)	0.5 (0, 1)	1 (0, 1)
	Systemic comorbidities	6 (2.4%)	0 (0%)	2 (0.8%)	0.466	0 (0%)	0 (0%)	8 (3.2%)
	Gynecological comorbidities	6 (2.4%)	0 (0%)	5 (2.0%)	0.013	8 (3.2%)	1 (0.4%)	20 (8%)
	Medication history	7 (2.8%)	1 (0.4%)	2 (0.8%)	0.931	9 (3.6%)	6 (2.4%)	25 (10%)
	Pregnancy complications	6 (2.4%)	2 (0.8%)	0 (0%)	0.264	1 (0.4%)	0 (0%)	9 (3.6%)
	Colporrhagia	41 (16.4%)	7 (2.8%)	8 (3.2%)	0.665	34 (13.6%)	15 (6%)	105 (42%)
	Ultrasonic	1 (0.4%)	2 (0.8%)	2 (0.8%)	0.028	13 (5.2%)	4 (1.6%)	22 (8.8%)
	Leucorrhea	15 (6%)	1 (0.4%)	3 (1.2%)	0.532	42 (16.8%)	9 (3.6%)	69 (27.6%)
	Blood routine	17 (6.8%)	2 (0.8%)	4 (1.6%)	0.814	62 (24.8%)	22 (8.8%)	107 (42.8%)
	Colposcopy	13 (5.2%)	3 (1.2%)	3 (1.2%)	0.867	0 (0%)	0 (0%)	19 (7.6%)
Diagnosis information	Cervical cytology	4 (1.6%)	2 (0.8%)	3 (1.2%)	0.163	3 (1.2%)	0 (0%)	12 (4.8%)
	Discovery by accident	4 (1.6%)	0 (0%)	1 (0.4%)	0.683	82 (32.8%)	23 (9.2%)	110 (44%)
	Discovery week (w)	11.5 (9, 15.5)	16 (9, 16)	8 (5.5, 11)	0.033	6 (6, 7)	8 (7.75, 9)	7 (6, 9)
	The first trimester	21 (8.4%)	4 (1.6%)	8 (3.2%)		133 (53.2%)	42 (16.8%)	208 (83.2%)
	The second trimester	30 (12%)	4 (1.6%)	4 (1.6%)		1 (0.4%)	1 (0.4%)	40 (16%)
	The third trimester	1 (0.4%)	1 (0.4%)	0 (0%)		0 (0%)	0 (0%)	2 (0.8%)
Histopathological features	No. of polyp.	1 (1,1)	1 (1,1)	1 (1,1)	0.817	1 (1,1)	1 (1,1)	1 (1,1)
	Diameter of polyp	2 (1.5, 3)	1.5 (1, 2.5)	2.5 (1.25, 4)	0.574	1 (0.5, 1.5)	0.5 (0.5, 1)	1 (0.5, 2)
	Endometrial polyp	15 (6%)	1 (0.4%)	3 (1.2%)	0.532	42 (16.8%)	11 (4.4%)	72 (28.8%)
	Endometrial fragment	37 (14.8%)	8 (3.2%)	9 (3.6%)	0.532	92 (36.8%)	32 (12.8%)	178 (71.2%)
	Inflammation	52 (20.8%)	9 (3.6%)	12 (4.8%)	NA	131 (52.4%)	42 (16.8%)	246 (98.4%)
	Hemorrhage	15 (6%)	3 (1.2%)	3 (1.2%)	0.916	31 (12.4%)	5 (2.0%)	57 (22.8%)
	Erosion	49 (19.6%)	9 (3.6%)	11 (4.4%)	0.698	119 (47.6%)	37 (14.8%)	225 (90%)
	Necrosis	20 (8%)	4 (1.6%)	3 (1.2%)	0.606	46 (18.4%)	12 (4.8%)	85 (34%)
	Thrombus	2 (0.8%)	2 (0.8%)	3 (1.2%)	0.031	32 (12.8%)	3 (1.2%)	42 (16.8%)
	Original diagnosis
	Decidua	23 (9.2%)	1 (0.4%)	5 (2.0%)	0.171	43 (17.2%)	20 (8%)	92 (36.8%)
	Endometrial polyp	23 (9.2%)	7 (2.8%)	4 (1.6%)	0.106	59 (23.6%)	13 (5.2%)	106 (42.4%)
	Endocervical polyp	6 (2.4%)	1 (0.4%)	3 (1.2%)	0.460	32 (12.8%)	10 (4%)	52 (20.8%)

G, gravid; P, pregnancy.