Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Carcinomas of the anorectal region. (a) Photomicrograph shows adenocarcinoma of the rectum composed of infiltrating malignant glands, with associated desmoplastic stroma and mucin production. (Original magnification, ×100; H-E stain.) (b) Photomicrograph shows squamous cell carcinoma of the proximal anal canal, with predominantly basaloid morphology and foci of keratinization. (Original magnification, ×200; H-E stain.)
