Liver mass staging: Difference between revisions
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{{Liver mass}} | {{Liver mass}} | ||
{{CMG}}{{AE}}{{MV}} | {{CMG}}; {{AE}}{{MV}} | ||
==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. 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> | |||
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> | |||
==Staging== | ==Staging== | ||
The table below summarizes the staging system for malignant liver mass, based on 3 factors: tumor size, lymph node invasion, and metastasis. | |||
{| | |||
! align="center" style="background:#4479BA; color: #FFFFFF;" + |Staging factor | |||
! colspan="2" align="center" style="background:#4479BA; color: #FFFFFF;" + |Stage | |||
||TX | ! align="center" style="background:#4479BA; color: #FFFFFF;" + |Description | ||
||Primary | |- | ||
! rowspan="7" align="center" style="background:#DCDCDC;" + |Size | |||
| colspan="2" align="center" style="background:#F5F5F5;" + |TX | |||
| align="left" style="background:#F5F5F5;" + |Primary tumor cannot be assessed | |||
|- | |||
| colspan="2" align="center" style="background:#F5F5F5;" + |T0 | |||
| align="left" style="background:#F5F5F5;" + |No evidence of primary tumour | |||
|- | |||
| colspan="2" align="center" style="background:#F5F5F5;" + |T1 | |||
| align="left" style="background:#F5F5F5;" + |A single tumor with no invasion into the blood vessels of the liver | |||
|- | |- | ||
| | | colspan="2" align="center" style="background:#F5F5F5;" + |T2 | ||
| align="left" style="background:#F5F5F5;" + |A single tumor with invasion into the blood vessels or multiple tumors, none more than 5 cm in size | |||
|- | |- | ||
| | | rowspan="2" align="center" style="background:#F5F5F5;" + |T3 | ||
| align="center" style="background:#F5F5F5;" + |T3a | |||
| align="left" style="background:#F5F5F5;" + |Multiple tumors, with any tumor larger than 5 cm | |||
|- | |- | ||
| | | align="center" style="background:#F5F5F5;" + |T3b | ||
| align="left" style="background:#F5F5F5;" + |The tumour has grown into either the portal or hepatic vein | |||
|- | |- | ||
| | | colspan="2" align="center" style="background:#F5F5F5;" + |T4 | ||
| align="left" style="background:#F5F5F5;" + |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) | |||
|- | |- | ||
| | ! rowspan="3" align="center" style="background:#DCDCDC;" + |Nodes | ||
| colspan="2" align="center" style="background:#F5F5F5;" + |NX | |||
| align="left" style="background:#F5F5F5;" + |Regional lymph nodes cannot be assessed | |||
|- | |- | ||
| | | colspan="2" align="center" style="background:#F5F5F5;" + |N0 | ||
| align="left" style="background:#F5F5F5;" + |No regional lymph node metastasis | |||
| | |||
|- | |- | ||
| | | colspan="2" align="center" style="background:#F5F5F5;" + |N1 | ||
| align="left" style="background:#F5F5F5;" + |Regional lymph node metastasis | |||
|- | |- | ||
! rowspan="2" align="center" style="background:#DCDCDC;" + |Metastasis | |||
| colspan="2" align="center" style="background:#F5F5F5;" + |M0 | |||
| align="left" style="background:#F5F5F5;" + |No distant metastasis | |||
=== | |||
| | |||
|- | |- | ||
| M1||Distant metastasis | | colspan="2" align="center" style="background:#F5F5F5;" + |M1 | ||
| align="left" style="background:#F5F5F5;" + |Distant metastasis | |||
|} | |} | ||
==References== | |||
{{Reflist|2}} | |||
[[Category:Medicine]] | |||
[[Category:Gastroenterology]] | |||
[[Category:Hepatology]] | |||
[[Category:Oncology]] | |||
[[Category:Up-To-Date]] | |||
[[Category:Surgery]] |
Latest revision as of 22:32, 29 July 2020
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.
Staging factor | Stage | Description | |
---|---|---|---|
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 |