Small intestine cancer diagnostic study of choice: Difference between revisions

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__NOTOC__
__NOTOC__
{{Small intestine cancer}}
{{Small intestine cancer}}
{{CMG}}; {{AE}}
{{CMG}}; {{AE}}{{Qurrat}}
== Overview ==
== Overview ==
The diagnosis of a small intestine cancer is often made late as the symptoms are nonspecific (abdominal pain, weight loss, nausea and vomiting, occult GI tract bleeding). Early diagnosis requires a high index of suspicion. Histopathological analysis by tissue sample through biopsy of the lesion is the diagnostic study of choice.
The diagnosis of a [[small intestine]] cancer is often made late as the symptoms are nonspecific ([[Abdominal pain, constipation and GI bleeding|abdominal pain,]] weight loss, nausea and vomiting, occult [[Gastrointestinal tract|GI tract]] bleeding). Early diagnosis requires a high index of suspicion. Histopathological analysis by tissue sample through biopsy of the lesion is the gold standard.


== Diagnostic Study of Choice ==
== Diagnostic Study of Choice ==


=== Study of choice ===
=== Gold Standard ===
*Biopsy is the gold standard test for the diagnosis of small intestine cancer.
*[[Biopsy]] is the [[Gold standard (test)|gold standard]] test for the diagnosis of [[small intestine]] cancer.
*Endoscopy and imaging tests can locate areas that have cancer, but the only way to confirm the diagnosis is to do a biopsy and histopathological analysis.
*[[Endoscopy]] and imaging tests may locate the mass, however, the only way to confirm the diagnosis is to do a [[biopsy]] and histopathological analysis.
*There are numerous ways to take biopsy of small intestine:
*There are numerous ways to take biopsy of [[small intestine]]:
**Endoscopy: Endoscopy can be used to biopsy the lesions of proximal duodenum to the ligament of Treitz or in the terminal ileum. Push enteroscopes can reach the proximal jejunum, but not distal jejunum and ileum.<ref name="pmid22741107">{{cite journal |vauthors=Cheung DY, Choi MG |title=Current advance in small bowel tumors |journal=Clin Endosc |volume=44 |issue=1 |pages=13–21 |date=September 2011 |pmid=22741107 |pmc=3363052 |doi=10.5946/ce.2011.44.1.13 |url=}}</ref>
**'''Endoscopic biopsy''': [[Endoscopy]] may be used to biopsy the lesions of proximal [[duodenum]] to the [[ligament of Treitz]] or in the terminal [[ileum]]. Push enteroscopes may reach the proximal jejunum, but not distal jejunum and ileum.<ref name="pmid22741107">{{cite journal |vauthors=Cheung DY, Choi MG |title=Current advance in small bowel tumors |journal=Clin Endosc |volume=44 |issue=1 |pages=13–21 |date=September 2011 |pmid=22741107 |pmc=3363052 |doi=10.5946/ce.2011.44.1.13 |url=}}</ref>
**Laproscopic biopsy:It is useful for the diagnosis of malignancy when the laboratory workup is negative and for obtaining adequate tissue samples of intestinal lesions.
**'''Laproscopic biopsy:''' It is useful for the diagnosis of malignancy when the laboratory workup is negative and for obtaining an adequate tissue samples of intestinal lesions.
**Exploratory laparotomy:This may be done if the tumor cannot be reached with an endoscope.It is the most sensitive diagnostic study and is needed to biopsy a tumor in the intestines.<ref name="pmid15274064">{{cite journal |vauthors=Dabaja BS, Suki D, Pro B, Bonnen M, Ajani J |title=Adenocarcinoma of the small bowel: presentation, prognostic factors, and outcome of 217 patients |journal=Cancer |volume=101 |issue=3 |pages=518–26 |date=August 2004 |pmid=15274064 |doi=10.1002/cncr.20404 |url=}}</ref>
**'''[[Laparotomy|Exploratory laparotomy]]:''' This may be done if the tumor cannot be reached with an [[endoscope]].It is the most sensitive diagnostic study and is needed to [[biopsy]] a tumor in the intestine.<ref name="pmid15274064">{{cite journal |vauthors=Dabaja BS, Suki D, Pro B, Bonnen M, Ajani J |title=Adenocarcinoma of the small bowel: presentation, prognostic factors, and outcome of 217 patients |journal=Cancer |volume=101 |issue=3 |pages=518–26 |date=August 2004 |pmid=15274064 |doi=10.1002/cncr.20404 |url=}}</ref>


===== Diagnostic results =====
===== Diagnostic results =====


{| class="wikitable"
*[[Biopsy]] samples are used to study histopathlogy of the lesions to confirm the diagnosis.
|+
*Summary of histology of different intestinal cancers is described in the table below:<ref name="pmid21586504">{{cite journal |vauthors=Anzidei M, Napoli A, Zini C, Kirchin MA, Catalano C, Passariello R |title=Malignant tumours of the small intestine: a review of histopathology, multidetector CT and MRI aspects |journal=Br J Radiol |volume=84 |issue=1004 |pages=677–90 |date=August 2011 |pmid=21586504 |pmc=3473441 |doi=10.1259/bjr/20673379 |url=}}</ref>
!Histology
 
!Typical appearance
{|
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Histology
! style="background:#4479BA; color: #FFFFFF;" align="center" + |Typical appearance
|-
|-
|'''Adenocarcinoma'''
| style="background:#DCDCDC;" align="left" + |'''Adenocarcinoma'''
|Polypoid lesions
| style="background:#F5F5F5;" + |
Complete bowel obstruction
* Polypoid lesions
 
* Complete [[bowel obstruction]]
Heterogenous enhancement
* Heterogenous enhancement
|-
|-
|'''Carcinoid'''
| style="background:#DCDCDC;" align="left" + |'''Carcinoid'''
|Single or multiple filling defects
| style="background:#F5F5F5;" + |
Desmoplastic reaction of the mesentery
* Single or multiple [[Barium swallow|filling defects]]
 
* [[Desmoplasia|Desmoplastic reaction]] of the [[mesentery]]
Hypervascularity in the lesions
* Hypervascularity in the lesions
|-
|-
|'''Lymphoma'''
| style="background:#DCDCDC;" align="left" + |'''Lymphoma'''
|Segmental wall thickening with ulceration and necrosis
| style="background:#F5F5F5;" + |
Lymphyadenopathies
* Segmental wall thickening with [[ulceration]] and [[necrosis]]
 
* [[Lymphadenopathy|Lymphadenopathies]]
Dilatation of bowel loops
* Dilatation of bowel loops
|-
|-
|'''GIST'''
| style="background:#DCDCDC;" align="left" + |'''GIST'''
|Large mass with homogeneous enhancement
| style="background:#F5F5F5;" + |
Necrosis and ulceration
* Large mass with homogeneous enhancement
 
* [[Necrosis]] and [[ulceration]]
Located in ileum
* Located in [[ileum]]
|-
|-
|'''Metastases'''
| style="background:#DCDCDC;" align="left" + |'''Metastases'''
|Nodules in submucosal layers and in mesentry and surrounding organs
| style="background:#F5F5F5;" + |
* [[Nodules]] in [[Submucosa|submucosal layers]] and in [[mesentery]] and surrounding organs
|}
|}
Histology Typical appearance Atypical appearance
Adenocarcinoma Adenocarcinoma Polypoid lesions with well-defined surface and margins
Complete bowel obstruction Central ulcerations
Heterogenous enhancement Duodenal localisation
Carcinoid Small (<2 cm) single or multiple filling defects Ill-defined thickening of bowel wall without discrete mass
Desmoplastic reaction of the mesentery Absence of desmoplastic reaction
Hypervascular Duodenal or jejunal localisation
Lymphoma Coarse segmental wall thickening with ulceration and necrosis Discrete polyp that may be a lead point of intussusception
Bulky lymphyadenopathies Absence of significant lymphoadenopathies
Aneurysmal dilatation of bowel loops No signs of bowel occlusion
GIST Large regular mass with inhomogeneous enhancement Irregular mass with low attenuation and poor enhancement
Necrosis and/or ulceration Larger calcifications
Ileal localisation Direct vascular encasement
Metastases Intraluminal nodules develeloping from haematogenous spread to submucosal layers Large serosal masses developed from intraperitoneal seeding from gastrointestinal cancers


===== Sequence of Diagnostic Studies =====
===== Sequence of Diagnostic Studies =====
*Patients with symptoms of small bowel cancer should undergo a complete history, physical examination, and screening for fecal occult blood.  
 
{| align="right"
|+'''Flowchart showing sequence of diagnostic studies'''
|
{{Family tree/start}}
{{Family tree | | | | A01 | | | |A01= [[Complete blood count]],<br>[[serum electrolytes]],<br>[[carcinoembryonic antigen]],<br>[[Liver function tests]],<br>and tumor markers}}
{{Family tree | | | | |!| | | | | }}
{{Family tree | | | | B01 | | | |B01= Fluoroscopy}}
{{Family tree | | | | |!| | | | | }}
{{Family tree | | | | B01 | | | |B01= CT and CT enteroclysis}}
{{Family tree | | | | |!| | | | | }}
{{Family tree | | | | B01 | | | |B01= MRI and MRI enetroclysis}}
{{Family tree | | | | |!| | | | | }}
{{Family tree | | | | B01 | | | |B01= Endoscopic biopsy and capsule enteroscopic}}
{{Family tree | | | | |!| | | | | }}
{{Family tree | | | | B01 | | | |B01= Laproscopic biopsy}}
{{Family tree | | | | |!| | | | | }}
{{Family tree | | | | B01 | | | |B01= Surgical biopsy}}
{{Family tree/end}}
|}
 
*Patients with symptoms of [[Small intestine cancer|small bowel cancer]] should undergo a complete history, physical examination, and screening for fecal [[occult blood]].  
*Laboratory work-up should include:
*Laboratory work-up should include:
**Complete blood count(CBC)
**[[Complete blood count]] (CBC)
**Measurement of serum electrolytes  
**Measurement of [[Electrolyte disturbance|serum electrolytes]]
**Carcino Embryonic Antigen (CEA)
**[[Carcinoembryonic antigen]] ([[CEA]])
**liver function tests (LFT).
**[[Liver function tests]] ([[Liver function tests|LFT]]).
*UGIS/SBFT are the most commonly used tests to examine the small bowel.<ref name="pmid7376936">{{cite journal |vauthors=Ekberg O, Ekholm S |title=Radiography in primary tumors of the small bowel |journal=Acta Radiol Diagn (Stockh) |volume=21 |issue=1 |pages=79–84 |date=1980 |pmid=7376936 |doi= |url=}}</ref>
 
*Barium swallow and Barium enema are used to visualize the lesion of intestine but they are not sensitive at detecting small intestinal cancer until very advanced stage.  
'''[[UGIS/SBFT]]:'''
*CT and CT enteroclysis are modern diagnostic tools used primarily for the detection and localization of small intestinal cancers.<ref name="pmid12659337">{{cite journal |vauthors=Maglinte DD, Bender GN, Heitkamp DE, Lappas JC, Kelvin FM |title=Multidetector-row helical CT enteroclysis |journal=Radiol. Clin. North Am. |volume=41 |issue=2 |pages=249–62 |date=March 2003 |pmid=12659337 |doi= |url=}}</ref>
* [[Fluoroscopy]] is the most commonly used tests to examine the [[Small intestine|small bowel]].<ref name="pmid7376936">{{cite journal |vauthors=Ekberg O, Ekholm S |title=Radiography in primary tumors of the small bowel |journal=Acta Radiol Diagn (Stockh) |volume=21 |issue=1 |pages=79–84 |date=1980 |pmid=7376936 |doi= |url=}}</ref>
*MR enteroclysis (MRE) is extensively used for the visualization of small intestinal cancer.<ref name="pmid20177091">{{cite journal |vauthors=Van Weyenberg SJ, Meijerink MR, Jacobs MA, Van der Peet DL, Van Kuijk C, Mulder CJ, Van Waesberghe JH |title=MR enteroclysis in the diagnosis of small-bowel neoplasms |journal=Radiology |volume=254 |issue=3 |pages=765–73 |date=March 2010 |pmid=20177091 |doi=10.1148/radiol.09090828 |url=}}</ref>  
*[[Barium swallow]] and [[Barium enema]] are used to visualize the lesion of intestine, however, they are not sensitive at detecting [[Small intestine|small intestinal]] cancer until very advanced stage.
*Endoscopy and capsule enteroscopy are extremely useful modalities to visualize the small intestine pathologies.<ref name="pmid22741107">{{cite journal |vauthors=Cheung DY, Choi MG |title=Current advance in small bowel tumors |journal=Clin Endosc |volume=44 |issue=1 |pages=13–21 |date=September 2011 |pmid=22741107 |pmc=3363052 |doi=10.5946/ce.2011.44.1.13 |url=}}</ref>
*Upper GI shows features of mucosal distortion, obliteration and narrowing. Delayed images may show hold up of barium at the site of the lesion.
*Tumor Markers: the role of tumor markers in the diagnosis of cancer is unclear they are mostly used for the follow up surveillance post treatment.<ref name="pmid11982470">{{cite journal |vauthors=Talamonti MS, Goetz LH, Rao S, Joehl RJ |title=Primary cancers of the small bowel: analysis of prognostic factors and results of surgical management |journal=Arch Surg |volume=137 |issue=5 |pages=564–70; discussion 570–1 |date=May 2002 |pmid=11982470 |doi= |url=}}</ref>
'''CT and CT enteroclysis (CTE):'''
*The majority of small intestine adenocarcinomas are positive for CEA. other markers that can come positive are: urinary 5-hydroxyindoleacetic acid (5-HIAA), serum chromogranin A (CGA),serum CGA and serum 5-hydroxytryptamine (5-HT, serotonin)
*[[Computed tomography|CT]] and CTE are modern diagnostic tools used primarily for the detection and localization of [[Small intestine|small intestinal]] cancers.<ref name="pmid12659337">{{cite journal |vauthors=Maglinte DD, Bender GN, Heitkamp DE, Lappas JC, Kelvin FM |title=Multidetector-row helical CT enteroclysis |journal=Radiol. Clin. North Am. |volume=41 |issue=2 |pages=249–62 |date=March 2003 |pmid=12659337 |doi= |url=}}</ref>
'''[[MR enteroclysis (MRE)]]:'''
*MRE is extensively used for the visualization of [[Small intestine|small intestinal]] cancer.<ref name="pmid20177091">{{cite journal |vauthors=Van Weyenberg SJ, Meijerink MR, Jacobs MA, Van der Peet DL, Van Kuijk C, Mulder CJ, Van Waesberghe JH |title=MR enteroclysis in the diagnosis of small-bowel neoplasms |journal=Radiology |volume=254 |issue=3 |pages=765–73 |date=March 2010 |pmid=20177091 |doi=10.1148/radiol.09090828 |url=}}</ref>  
'''[[Endoscopy and capsule enteroscopy]]:'''
*These are extremely useful modalities to visualize the [[small intestine]] pathologies.<ref name="pmid22741107">{{cite journal |vauthors=Cheung DY, Choi MG |title=Current advance in small bowel tumors |journal=Clin Endosc |volume=44 |issue=1 |pages=13–21 |date=September 2011 |pmid=22741107 |pmc=3363052 |doi=10.5946/ce.2011.44.1.13 |url=}}</ref>
*Tumor Markers: the role of [[tumor markers]] in the diagnosis of cancer is unclear they are mostly used for the follow up surveillance post treatment.<ref name="pmid11982470">{{cite journal |vauthors=Talamonti MS, Goetz LH, Rao S, Joehl RJ |title=Primary cancers of the small bowel: analysis of prognostic factors and results of surgical management |journal=Arch Surg |volume=137 |issue=5 |pages=564–70; discussion 570–1 |date=May 2002 |pmid=11982470 |doi= |url=}}</ref>
*The majority of [[small intestine]] [[adenocarcinoma]]<nowiki/>s are positive for [[CEA]]. other markers that can come positive are: urinary [[5-Hydroxyindoleacetic acid|5-hydroxyindoleacetic acid]] (5-HIAA), serum chromogranin A (CGA) and serum 5-hydroxytryptamine ([[5-HT]], [[serotonin]])


=== Name of Diagnostic Criteria ===
==Staging==


The American Joint Committee on Cancer (AJCC) has designated staging by TNM classification to define small intestine cancer<ref>{{Cite web | title =Stage Information for Small Intestine Cancer | url =http://www.cancer.gov/types/small-intestine/hp/small-intestine-treatment-pdq#section/_10 }}</ref>:
The [[American Joint Committee on Cancer|American Joint Committee]] on Cancer (AJCC) has designated staging by [[TNM classification]] to define [[small intestine cancer]]<ref>{{Cite web | title =Stage Information for Small Intestine Cancer | url =http://www.cancer.gov/types/small-intestine/hp/small-intestine-treatment-pdq#section/_10 }}</ref>:


===Primary Tumor (T):===
===Primary Tumor (T):===
Line 89: Line 105:
|+
|+
|-
|-
|TX
| style="background:#DCDCDC;" align="left" + |'''TX'''
|Primary tumor cannot be assessed
| style="background:#F5F5F5;" + |'''<small>Primary tumor cannot be assessed</small>'''
|-
|-
|T0
| style="background:#DCDCDC;" align="left" + |'''T0'''
|No evidence of primary tumor
| style="background:#F5F5F5;" + |<small>'''No evidence of primary tumor'''</small>
|-
|-
|Tis
| style="background:#DCDCDC;" align="left" + |'''Tis'''
|Carcinoma in situ
| style="background:#F5F5F5;" + |'''<small>Carcinoma in situ</small>'''
|-
|-
|T1a
| style="background:#DCDCDC;" align="left" + |'''T1a'''
|Tumor invades lamina propria
| style="background:#F5F5F5;" + |'''<small>Tumor invades lamina propria</small>'''
|-
|-
|T1b
| style="background:#DCDCDC;" align="left" + |'''T1b'''
|Tumor invades submucosa
| style="background:#F5F5F5;" + |'''<small>Tumor invades submucosa</small>'''
|-
|-
|T2
| style="background:#DCDCDC;" align="left" + |'''T2'''
|Tumor invades muscularis propria
| style="background:#F5F5F5;" + |'''<small>Tumor invades muscularis propria</small>'''
|-
|-
|T3
| style="background:#DCDCDC;" align="left" + |'''T3'''
|Tumor invades through the muscularis propria into the subserosa or into the non-peritonealized perimuscular tissue (mesentery or retroperitoneum) with extension ≤2 cm
| style="background:#F5F5F5;" + |'''<small>Tumor invades through the muscularis propria into the subserosa or into the non-peritonealized perimuscular tissue (mesentery or retroperitoneum) with extension ≤2 cm</small>'''
|-
|-
|T4
| style="background:#DCDCDC;" align="left" + |'''T4'''
|Tumor perforates the visceral peritoneum or directly invades other organs or structures (includes other loops of small intestine, mesentery, or retroperitoneum >2 cm, and abdominal wall by way of serosa; for duodenum only, invasion of pancreas or bile duct)
| style="background:#F5F5F5;" + |'''<small>Tumor perforates the visceral peritoneum or directly invades other organs or structures (includes other loops of small intestine, mesentery, or retroperitoneum >2 cm, and abdominal wall by way of serosa; for duodenum only, invasion of pancreas or bile duct)</small>'''
|}
|}


===Regional Lymph Nodes (N)===
===Regional Lymph Nodes (N)===
*NX- Regional lymph nodes cannot be assessed
{| class="wikitable"
 
|+
*N0- No regional lymph node metastasis
| style="background:#DCDCDC;" align="left" + |'''Nx'''
 
| style="background:#F5F5F5;" + |'''<small>Regional lymph nodes cannot be assessed</small>'''
*N1- Metastasis in 1–3 regional lymph nodes
|-
 
| style="background:#DCDCDC;" align="left" + |'''N0'''
*N2- Metastases in ≥4 regional lymph nodes
| style="background:#F5F5F5;" + |'''<small>No regional lymph node metastasis</small>'''
|-
| style="background:#DCDCDC;" align="left" + |'''N1'''
| style="background:#F5F5F5;" + |'''<small>Metastasis in 1–3 regional lymph nodes</small>'''
|-
| style="background:#DCDCDC;" align="left" + |'''N2'''
| style="background:#F5F5F5;" + |'''<small>Metastases in ≥4 regional lymph nodes</small>'''
|}


===Distant Metastasis (M)===
===Distant Metastasis (M)===
*M0- No distant metastasis
{| class="wikitable"
 
|+
*M1- Distant metastasis
| style="background:#DCDCDC;" align="left" + |'''M0'''
| style="background:#F5F5F5;" + |'''<small>No distant metastasis</small>'''
|-
| style="background:#DCDCDC;" align="left" + |'''M1'''
| style="background:#F5F5F5;" + |'''<small>Distant metastasis</small>'''
|}


===AJCC Stage Groupings===
===AJCC Stage Groupings===
{| {{table}} cellpadding="4" cellspacing="0" style="border:#c9c9c9 1px solid; margin: 1em 1em 1em 0; border-collapse: collapse;"
{| class="wikitable"
| align="center" style="background:#f0f0f0;" |'''Stage'''
|+
| align="center" style="background:#f0f0f0;" |'''T'''
! colspan="1" style="background:#4479BA; color: #FFFFFF; +" |'''Stage'''
| align="center" style="background:#f0f0f0;" |'''N'''
! colspan="1" style="background:#4479BA; color: #FFFFFF; +" |'''T'''
| align="center" style="background:#f0f0f0;" |'''M'''
! colspan="1" style="background:#4479BA; color: #FFFFFF; +" |'''N'''
! colspan="1" style="background:#4479BA; color: #FFFFFF; +" |'''M'''
|-
|-
| 0||Tis||N0||M0
| style="background:#DCDCDC;" align="left" + | '''0'''||Tis||N0||M0
|-
|-
| I||T1||N0||M0
| style="background:#DCDCDC;" align="left" + | '''I'''||T1||N0||M0
|-
|-
|| II||T2||N0
| style="background:#DCDCDC;" align="left" + |'''II'''||T2||N0
|M0
|M0
|-
|-
| IIA||T3||N0||M0
| style="background:#DCDCDC;" align="left" + | '''IIA'''||T3||N0||M0
|-
|-
| IIB||T4||N0||M0
| style="background:#DCDCDC;" align="left" + | '''IIB'''||T4||N0||M0
|-
|-
| IIIA||Any T||N1||M0
| style="background:#DCDCDC;" align="left" + | '''IIIA'''||Any T||N1||M0
|-
|-
| IIIB||Any T||N2||M0
| style="background:#DCDCDC;" align="left" + | '''IIIB'''||Any T||N2||M0
|-
|-
| IV||Any T||Any N||M1
| style="background:#DCDCDC;" align="left" + |'''IV'''||Any T||Any N||M1
|}
|}


==References==
==References==
{{Reflist|2}}
{{reflist|2}}
 
{{WH}}
{{WH}}
{{WS}}
{{WS}}
[[Category:Disease]]
[[Category:Up-To-Date]]
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[[Category:Medicine]]
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[[Category:Surgery]]

Latest revision as of 16:18, 16 January 2019

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Qurrat-ul-ain Abid, M.D.[2]

Overview

The diagnosis of a small intestine cancer is often made late as the symptoms are nonspecific (abdominal pain, weight loss, nausea and vomiting, occult GI tract bleeding). Early diagnosis requires a high index of suspicion. Histopathological analysis by tissue sample through biopsy of the lesion is the gold standard.

Diagnostic Study of Choice

Gold Standard

  • Biopsy is the gold standard test for the diagnosis of small intestine cancer.
  • Endoscopy and imaging tests may locate the mass, however, the only way to confirm the diagnosis is to do a biopsy and histopathological analysis.
  • There are numerous ways to take biopsy of small intestine:
    • Endoscopic biopsy: Endoscopy may be used to biopsy the lesions of proximal duodenum to the ligament of Treitz or in the terminal ileum. Push enteroscopes may reach the proximal jejunum, but not distal jejunum and ileum.[1]
    • Laproscopic biopsy: It is useful for the diagnosis of malignancy when the laboratory workup is negative and for obtaining an adequate tissue samples of intestinal lesions.
    • Exploratory laparotomy: This may be done if the tumor cannot be reached with an endoscope.It is the most sensitive diagnostic study and is needed to biopsy a tumor in the intestine.[2]
Diagnostic results
  • Biopsy samples are used to study histopathlogy of the lesions to confirm the diagnosis.
  • Summary of histology of different intestinal cancers is described in the table below:[3]
Histology Typical appearance
Adenocarcinoma
Carcinoid
Lymphoma
GIST
Metastases
Sequence of Diagnostic Studies
Flowchart showing sequence of diagnostic studies
 
 
 
Complete blood count,
serum electrolytes,
carcinoembryonic antigen,
Liver function tests,
and tumor markers
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fluoroscopy
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CT and CT enteroclysis
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
MRI and MRI enetroclysis
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Endoscopic biopsy and capsule enteroscopic
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Laproscopic biopsy
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Surgical biopsy
 
 
 

UGIS/SBFT:

  • Fluoroscopy is the most commonly used tests to examine the small bowel.[4]
  • Barium swallow and Barium enema are used to visualize the lesion of intestine, however, they are not sensitive at detecting small intestinal cancer until very advanced stage.
  • Upper GI shows features of mucosal distortion, obliteration and narrowing. Delayed images may show hold up of barium at the site of the lesion.

CT and CT enteroclysis (CTE):

  • CT and CTE are modern diagnostic tools used primarily for the detection and localization of small intestinal cancers.[5]

MR enteroclysis (MRE):

Endoscopy and capsule enteroscopy:

Staging

The American Joint Committee on Cancer (AJCC) has designated staging by TNM classification to define small intestine cancer[8]:

Primary Tumor (T):

TX Primary tumor cannot be assessed
T0 No evidence of primary tumor
Tis Carcinoma in situ
T1a Tumor invades lamina propria
T1b Tumor invades submucosa
T2 Tumor invades muscularis propria
T3 Tumor invades through the muscularis propria into the subserosa or into the non-peritonealized perimuscular tissue (mesentery or retroperitoneum) with extension ≤2 cm
T4 Tumor perforates the visceral peritoneum or directly invades other organs or structures (includes other loops of small intestine, mesentery, or retroperitoneum >2 cm, and abdominal wall by way of serosa; for duodenum only, invasion of pancreas or bile duct)

Regional Lymph Nodes (N)

Nx Regional lymph nodes cannot be assessed
N0 No regional lymph node metastasis
N1 Metastasis in 1–3 regional lymph nodes
N2 Metastases in ≥4 regional lymph nodes

Distant Metastasis (M)

M0 No distant metastasis
M1 Distant metastasis

AJCC Stage Groupings

Stage T N M
0 Tis N0 M0
I T1 N0 M0
II T2 N0 M0
IIA T3 N0 M0
IIB T4 N0 M0
IIIA Any T N1 M0
IIIB Any T N2 M0
IV Any T Any N M1

References

  1. ↑ 1.0 1.1 Cheung DY, Choi MG (September 2011). "Current advance in small bowel tumors". Clin Endosc. 44 (1): 13–21. doi:10.5946/ce.2011.44.1.13. PMC 3363052. PMID 22741107.
  2. ↑ Dabaja BS, Suki D, Pro B, Bonnen M, Ajani J (August 2004). "Adenocarcinoma of the small bowel: presentation, prognostic factors, and outcome of 217 patients". Cancer. 101 (3): 518–26. doi:10.1002/cncr.20404. PMID 15274064.
  3. ↑ Anzidei M, Napoli A, Zini C, Kirchin MA, Catalano C, Passariello R (August 2011). "Malignant tumours of the small intestine: a review of histopathology, multidetector CT and MRI aspects". Br J Radiol. 84 (1004): 677–90. doi:10.1259/bjr/20673379. PMC 3473441. PMID 21586504.
  4. ↑ Ekberg O, Ekholm S (1980). "Radiography in primary tumors of the small bowel". Acta Radiol Diagn (Stockh). 21 (1): 79–84. PMID 7376936.
  5. ↑ Maglinte DD, Bender GN, Heitkamp DE, Lappas JC, Kelvin FM (March 2003). "Multidetector-row helical CT enteroclysis". Radiol. Clin. North Am. 41 (2): 249–62. PMID 12659337.
  6. ↑ Van Weyenberg SJ, Meijerink MR, Jacobs MA, Van der Peet DL, Van Kuijk C, Mulder CJ, Van Waesberghe JH (March 2010). "MR enteroclysis in the diagnosis of small-bowel neoplasms". Radiology. 254 (3): 765–73. doi:10.1148/radiol.09090828. PMID 20177091.
  7. ↑ Talamonti MS, Goetz LH, Rao S, Joehl RJ (May 2002). "Primary cancers of the small bowel: analysis of prognostic factors and results of surgical management". Arch Surg. 137 (5): 564–70, discussion 570–1. PMID 11982470.
  8. ↑ "Stage Information for Small Intestine Cancer".

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