That much blood is not a 'just a' anything.
So the butt bleed is just a nosebleed.
Pathology from the rectal bleed showed traces of nasal epithelium.
Pathology from the rectal bleed showed traces of nasal epithelium. [SEP] So the butt bleed is just a nosebleed. [SEP] That much blood is not a 'just a' anything.