Perianal ulcer.
Meis
J F
JF
van Goor
H
H
Verweij
P E
PE
D003424:Crohn Disease / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005401:Fissure in Ano / Q000175:diagnosis* / Q000382:microbiology; D006660:Histoplasmosis / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged