Revised TNM Classification of Eloubeidi et al for Esophageal Carcinoma Based on Tumor Length

Description

Eloubeidi et al developed a revised TNM classification for esophageal carcinoma. This incorporates tumor length, number of positive lymph nodes and other pathologic findings to stage the tumor. The authors are from the University of Alabama and the Medical University of South Carolina.

Group	Findings	Code
T	tumor cannot be assessed	Tx
	no evidence of primary tumor	T0
	carcinoma in situ	Tis
	tumor invades lamina propria or submucosa	T1
	tumor invades muscularis propria	T2
	tumor invades adventitia	T3
	tumor invades adjacent structures	T4
T subcode	length <= 3 cm	a
	length > 3 cm	b
N	regional lymph nodes cannot be assessed	Nx
	no regional lymph node metastasis	N0
	regional lymph node metastases, 1 – 5	N1a
	regional lymph node metastases, > 5	N1b
M	distant metastasis cannot be assessed	Mx
	no distant metastasis	M0
	distant metastasis	M1

from Table 7, page 1442

Segment of Esophagus	Distant Metastasis	Designation
upper thoracic	to cervical lymph nodes	M1a
	to other distant sites	M1b
midthoracic	NA	M1a
	nonregional lymph nodes and/or other distant sites	M1b
lower thoracic	to celiac lymph nodes	M1a
	to other distant sites	M1b

mortality risk based on tumor size in cm =

= 1 – (0.942 * EXP(Y))

where:

Y =

= (0.021 * ((diameter in cm)^2)) – (0.3285 * (diameter in cm))

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Description

Specialty

ICD-10