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Non-Small Cell Lung Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Stage Information for NSCLC

Table 2. Definitions of TNM Occult Carcinomaa

StageTNMDescription
a Reprinted with permission from AJCC: Lung. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 253-70.
Occult carcinomaTX, N0, M0TX = Primary tumor cannot be assessed, or tumor proven by the presence of malignant cells in sputum or bronchial washings but not visualized by imaging or bronchoscopy.
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.

Table 3. Definitions of TNM Stage 0a

StageTNMDescription
a Reprinted with permission from AJCC: Lung. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 253-70.
0Tis, N0, M0Tis = Carcinomain situ.
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.

Table 4. Definitions of TNM Stage IAa

StageTNMDescriptionIllustration
a Reprinted with permission from AJCC: Lung. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 253-70.
b The uncommon superficial spreading of the tumor of any size with its invasive component limited to the bronchial wall, which may extend proximally to the main bronchus, is also classified as T1a.
IA
T1a, N0, M0
T1a = Tumor ≤2 cm in greatest dimension, surrounded by lung or visceral pleura, without bronchoscopic evidence of invasion more proximal than the lobar bronchus (i.e., not in the main bronchus).b

cdr0000520459.jpg
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.
T1b, N0, M0T1b = Tumor >2 cm but ≤3 cm in greatest dimension, surrounded by lung or visceral pleura, without bronchoscopic evidence of invasion more proximal than the lobar bronchus (i.e., not in the main bronchus).b
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.

Table 5. Definitions of TNM Stage IBa

StageTNMDescriptionIllustration
a Reprinted with permission from AJCC: Lung. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 253-70.
b The uncommon superficial spreading of the tumor of any size with its invasive component limited to the bronchial wall, which may extend proximally to the main bronchus, is also classified as T1a.
IB
T2a, N0, M0
T2a = Tumor >3 cm but ≤5 cm in greatest dimension,or tumor with any of the following features: involves main bronchus, ≥2 cm distal to the carina; invades visceral pleura (PL1 or PL2);or is associated with atelectasis or obstructive pneumonitis that extends to the hilar region but does not involve the entire lung.

cdr0000520459.jpg
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.
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WebMD Public Information from the National Cancer Institute

Last Updated: February 25, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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