Hydradenitis suppurativa and inflammatory bowel disease: An unusual, but existing association

Table 1 Case reports about the association Crohn’s disease-hydradenitis suppurativa

Ref.	n	Localization of CD	Localization of HS	CD predates HS
Ostlere et al[11], 1991	3	Colon	Anogenital	NR
Burrows et al[12], 1992	2	Colon	Anogenital, axillae, groin	NR
Gower-Rousseau et al[13], 1992	1	Ileo-colon	Perineum	NR
Attanoos et al[14], 1993	3	Colon, ileo-colon, colon-jejunum	Anogenital, axillae, perineum	Yes
Tsianos et al[15], 1995	1	Colon	Anogenital, axillae, sternum	Yes
Roy et al[16], 1997	1	Ileo-colon	Axillae	NR
Martínez et al[17], 2001	1	Ileo-colon	Axillae	Yes
Roussomoustakaki et al[18], 2003	1	Ileo-colon	Anogenital, axillae, groin	No
Yazdanyar et al[19], 2010	2	Colon	Axillae, groin, submammary	No
Goertz et al[20], 2008	1	Colon	Perianal	Yes
dos Santos et al[21], 2012	1	Rectum	Perianal	Yes
Hiraiwa et al[22], 2013	1	Ulcerative colitis	Groin	Yes

CD: Crohn’s disease; HS: Hydradenitis suppurativa.