EOD Primary Tumor

This input is used for staging

Default

999

NAACCR Item

NAACCR #772

Code	Description	EOD 2018 T	SS2018 T
000	In situ, intraepithelial, noninvasive Anal intraepithelial neoplasia III Bowen disease	88	IS
100	Any size tumor with invasion to - Intramucosa - Lamina propria - Mucosa, NOS - Muscularis mucosae - Muscularis propria (internal sphincter) - Submucosa (superficial invasion) Incidental finding of malignancy in hemorrhoid, NOS Confined to anus, NOS Localized, NOS	Tumor Size with Primary Tumor for T	L
200	Any size tumor with extension to - Ischiorectal fat/tissue - Perianal skin - Perirectal skin - Rectal mucosa or submucosa - Rectal wall - Skeletal muscle(s) + Anal sphincter (external) + Levator ani - Subcutaneous perianal tissue	Tumor Size with Primary Tumor for T	RE
600	Perineum Vulva	T4	RE
700	Bladder Broad ligament(s) Cervix uteri Corpus uteri Pelvic peritoneum Prostate Urethra Vagina Further contiguous extension	T4	D
800	No evidence of primary tumor	T0	U
999	Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical record Death Certificate Only	TX	U

(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998 (2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001. (3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL) (4) **Anus**, from the AJCC Cancer Staging System Version 9 (2022). Used with permission of the American College of Surgeons, Chicago, Illinois.