Table 2.

 Number of biopsy specimens, number of endoscopic or surgical sampling procedures, histological follow up duration, and time to granuloma development in patients with and without epithelioid granulomas

	No of granulomas at inclusion (n = 46)	Granulomas found during follow up (n = 23)	Granulomas at last follow up (n = 69)
No of biopsies*
Mean (SD)	16.5 (14.4)	18.2 (11.7)	17.2 (13.5)
Median (range)	13 (2–74)	16 (4–41)	14 (2–74)
No of sampling procedures
Mean (SD)	3.2 (1.2)	3.2 (1.2)	2.5 (1.3)
Median (range)	2 (1–6)	3 (2–5)	2 (1–6)
Histological follow up duration (months)
Mean (SD)	23.6 (27.5)	33.8 (27.1)	27.0 (27.6)
Median (range)	7.8 (0–76)	33.8 (0–84)	14.4 (0–84)
Time to granuloma detection (months)
Mean (SD)	0.19 (0.76)	18.14 (20.26)	6.17 (14.34)
Median (range)	0.09 (0–3.78)	9.59 (0–63)	0.16 (0–68.0)

*Total number of endoscopic biopsies or surgical samples per patients whatever the site during all of the follow up period.