Liver mass staging: Difference between revisions
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==Overview== | ==Overview== | ||
According to the American Joint Committee on Cancer (AJCC) staging system, there are 4 stages of malignant liver mass, based on 3 factors: tumor size, lymph node invasion, and metastasis. Each stage is assigned a letter and a number that designate T for tumor size, N for node invasion, and M for metastasis.<ref name="pmid19598296">{{cite journal |vauthors=Assy N, Nasser G, Djibre A, Beniashvili Z, Elias S, Zidan J |title=Characteristics of common solid liver lesions and recommendations for diagnostic workup |journal=World J. Gastroenterol. |volume=15 |issue=26 |pages=3217–27 |year=2009 |pmid=19598296 |pmc=2710776 |doi= |url=}}</ref> | According to the American Joint Committee on Cancer (AJCC) staging system, there are 4 stages of malignant liver mass, based on 3 factors: tumor size, lymph node invasion, and metastasis. Each stage is assigned a letter and a number that designate T for tumor size, N for node invasion, and M for metastasis. There is no staging for benign lesions<ref name="pmid19598296">{{cite journal |vauthors=Assy N, Nasser G, Djibre A, Beniashvili Z, Elias S, Zidan J |title=Characteristics of common solid liver lesions and recommendations for diagnostic workup |journal=World J. Gastroenterol. |volume=15 |issue=26 |pages=3217–27 |year=2009 |pmid=19598296 |pmc=2710776 |doi= |url=}}</ref> | ||
==Staging== | ==Staging== | ||
The table below summarizes the staging system for malignant liver mass, based on 3 factors: tumor size, lymph node invasion, and metastasis. | |||
{| class="wikitable" | |||
! colspan="3" |Size | |||
|- | |||
||TX | | colspan="2" |TX | ||
|Primary tumor cannot be assessed | |||
|- | |||
| colspan="2" |T0 | |||
|No evidence of primary tumour | |||
|- | |||
| colspan="2" |T1 | |||
|A single tumor with no invasion into the blood vessels of the liver | |||
|- | |||
| colspan="2" |T2 | |||
|A single tumor with invasion into the blood vessels or multiple tumors, none more than 5 cm in size | |||
|- | |||
| rowspan="2" |T3 | |||
|T3a | |||
|Multiple tumors, with any tumor larger than 5 cm | |||
|- | |- | ||
| | |T3b | ||
|The tumour has grown into either the portal or hepatic vein | |||
|- | |- | ||
| | | colspan="2" |T4 | ||
|The tumor has grown into nearby organs (other than the gallbladder) '''or''' | |||
The tumour has grown into the layer of tissue that covers the organs in the abdomen (visceral peritoneum) | |||
|- | |- | ||
| | ! colspan="3" |Nodes | ||
|- | |- | ||
| | | colspan="2" |NX | ||
|Regional lymph nodes cannot be assessed | |||
|- | |- | ||
| | | colspan="2" |N0 | ||
|No regional lymph node metastasis | |||
|- | |- | ||
| | | colspan="2" |N1 | ||
|Regional lymph node metastasis | |||
|- | |- | ||
| | ! colspan="3" |Metastasis | ||
|- | |- | ||
| | | colspan="2" |M0 | ||
|No distant metastasis | |||
|- | |- | ||
| M1 | | colspan="2" |M1 | ||
|Distant metastasis | |||
|} | |} | ||
Revision as of 19:09, 6 February 2018
Liver Mass Microchapters |
Diagnosis |
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Treatment |
Case Studies |
Liver mass staging On the Web |
American Roentgen Ray Society Images of Liver mass staging |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2]
Overview
According to the American Joint Committee on Cancer (AJCC) staging system, there are 4 stages of malignant liver mass, based on 3 factors: tumor size, lymph node invasion, and metastasis. Each stage is assigned a letter and a number that designate T for tumor size, N for node invasion, and M for metastasis. There is no staging for benign lesions[1]
Staging
The table below summarizes the staging system for malignant liver mass, based on 3 factors: tumor size, lymph node invasion, and metastasis.
Size | ||
---|---|---|
TX | Primary tumor cannot be assessed | |
T0 | No evidence of primary tumour | |
T1 | A single tumor with no invasion into the blood vessels of the liver | |
T2 | A single tumor with invasion into the blood vessels or multiple tumors, none more than 5 cm in size | |
T3 | T3a | Multiple tumors, with any tumor larger than 5 cm |
T3b | The tumour has grown into either the portal or hepatic vein | |
T4 | The tumor has grown into nearby organs (other than the gallbladder) or
The tumour has grown into the layer of tissue that covers the organs in the abdomen (visceral peritoneum) | |
Nodes | ||
NX | Regional lymph nodes cannot be assessed | |
N0 | No regional lymph node metastasis | |
N1 | Regional lymph node metastasis | |
Metastasis | ||
M0 | No distant metastasis | |
M1 | Distant metastasis |