question about proctitis

Yes, proctitis is ulcerative colitis.

I have had a tiny bit of inflammation in my rectum that caused me a world of hurt. Over time, mine ended up spreading but some people remain with UP which is only in the rectum. Unfortunately, it can be very persistent even though it sounds much less extreme. Biopsies can check for infectious causes like CMV of C diff but you should do stool tests and blood work if you're concerned about something specific.

I was diagnosed of ulcerative colitis (proctitis).

But i maybe i was misdiagnosed? how can the doctors be sure that this is ulcerative proctitis not just proctitis?

what are the test? biopsy was done on me was that it? "focal active colitis"

and also i was wrong it was 15cm to 20cm

thank you.

Ulcerative colitis is diagnosed through a series of eliminations. If your doctor has a suspected diagnosis of ulcerative colitis, he'll put that at the top of the paper with the specimens.
The pathologist will state if the specimens are "consistent with" ulcerative colitis if it doesn't have anything else to offer such as microscopic colitis, bacteria, sexual transmitted disease, virus, etc.

So, do you have a copy of the entire biopsies report? and I sure hope your doc took more than one biopsy.

Just to clarify....from your rectum would be in the sigmoid. IN the rectum is obvious. So...state again what's on the report.
q

Mine started there. First 8 cm initially.

Either Crohn's or UC can affect the rectum with inflammation (known as proctitis) or the colon, when crohn's is affecting the colon it's referred to as crohn's colitis, CD can affect any part of the GI tract from mouth to anus but UC is limited to the rectum/colon, UC generally starts in the rectum (inflammation of the rectum is referred to as proctitis) and then moves in the to colon. Crohn's can also affect more than one area at a time as well throughout the GI tract.

Crohn's inflammation differs from UC inflammation, with CD the inflammation is patchy (inflammation basically marbled with healthy tissue) and can also go through the layers of the intestinal lining, with UC it's not patchy inflammation, instead the entire affected area will be inflamed and UC stays on the surface of the lining always, unlike CD where it can (but not necessarily always) affect the multiple layers of the intestinal lining.