Isolated superior mesenteric artery dissection: Difference between revisions
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{{Infobox medical condition | |||
| name = Isolated superior mesenteric artery dissection | |||
| image = [[File:Superior_mesenteric_a.gif|thumb|Illustration of the superior mesenteric artery]] | |||
| caption = Superior mesenteric artery | |||
| field = [[Vascular surgery]] | |||
| synonyms = ISMAD | |||
| symptoms = Abdominal pain, nausea, vomiting | |||
| complications = [[Bowel ischemia]], [[Aneurysm]] | |||
| onset = Typically in middle-aged adults | |||
| duration = Variable | |||
| causes = [[Spontaneous]] or [[trauma]] | |||
| risks = [[Hypertension]], [[Atherosclerosis]], [[Connective tissue disorder]] | |||
| diagnosis = [[CT angiography]], [[MRI]], [[Ultrasound]] | |||
| differential = [[Mesenteric ischemia]], [[Aortic dissection]] | |||
| prevention = Control of risk factors | |||
| treatment = [[Anticoagulation]], [[Endovascular stenting]], [[Surgery]] | |||
| prognosis = Generally good with treatment | |||
| frequency = Rare | |||
}} | |||
{{Short description|Medical condition}} | {{Short description|Medical condition}} | ||
'''Isolated superior mesenteric artery dissection''' (ISMAD) is a rare vascular condition characterized by the dissection of the [[superior mesenteric artery]] (SMA) without involvement of other major arteries. The SMA is a critical artery that supplies blood to a large portion of the [[intestines]], including the [[small intestine]] and part of the [[large intestine]]. | '''Isolated superior mesenteric artery dissection''' (ISMAD) is a rare vascular condition characterized by the dissection of the [[superior mesenteric artery]] (SMA) without involvement of other major arteries. The SMA is a critical artery that supplies blood to a large portion of the [[intestines]], including the [[small intestine]] and part of the [[large intestine]]. | ||
== Pathophysiology == | == Pathophysiology == | ||
The pathophysiology of ISMAD involves a tear in the intimal layer of the SMA, leading to the formation of a false lumen. This can result in compromised blood flow to the intestines, potentially causing [[mesenteric ischemia]]. The exact cause of the dissection is not always clear, but it may be associated with factors such as [[hypertension]], [[atherosclerosis]], and connective tissue disorders. | The pathophysiology of ISMAD involves a tear in the intimal layer of the SMA, leading to the formation of a false lumen. This can result in compromised blood flow to the intestines, potentially causing [[mesenteric ischemia]]. The exact cause of the dissection is not always clear, but it may be associated with factors such as [[hypertension]], [[atherosclerosis]], and connective tissue disorders. | ||
== Clinical Presentation == | == Clinical Presentation == | ||
Patients with ISMAD may present with a variety of symptoms, ranging from mild abdominal pain to severe, acute abdominal distress. The pain is often located in the [[epigastric region]] and may be associated with nausea and vomiting. In some cases, the condition may be asymptomatic and discovered incidentally during imaging studies for other reasons. | Patients with ISMAD may present with a variety of symptoms, ranging from mild abdominal pain to severe, acute abdominal distress. The pain is often located in the [[epigastric region]] and may be associated with nausea and vomiting. In some cases, the condition may be asymptomatic and discovered incidentally during imaging studies for other reasons. | ||
== Diagnosis == | == Diagnosis == | ||
The diagnosis of ISMAD is typically made using imaging techniques such as [[computed tomography angiography]] (CTA) or [[magnetic resonance angiography]] (MRA). These imaging modalities can reveal the presence of a dissection flap and the extent of the false lumen. | The diagnosis of ISMAD is typically made using imaging techniques such as [[computed tomography angiography]] (CTA) or [[magnetic resonance angiography]] (MRA). These imaging modalities can reveal the presence of a dissection flap and the extent of the false lumen. | ||
== Management == | == Management == | ||
Management of ISMAD depends on the severity of the condition and the symptoms presented. Conservative treatment, including [[anticoagulation]] and [[antihypertensive therapy]], is often sufficient for asymptomatic or mildly symptomatic cases. In more severe cases, endovascular interventions such as [[stenting]] or [[surgical revascularization]] may be necessary to restore adequate blood flow. | Management of ISMAD depends on the severity of the condition and the symptoms presented. Conservative treatment, including [[anticoagulation]] and [[antihypertensive therapy]], is often sufficient for asymptomatic or mildly symptomatic cases. In more severe cases, endovascular interventions such as [[stenting]] or [[surgical revascularization]] may be necessary to restore adequate blood flow. | ||
== Prognosis == | == Prognosis == | ||
The prognosis for patients with ISMAD is generally favorable, especially for those who receive appropriate medical management. Most patients respond well to conservative treatment, and the risk of complications such as bowel infarction is low when the condition is promptly diagnosed and managed. | The prognosis for patients with ISMAD is generally favorable, especially for those who receive appropriate medical management. Most patients respond well to conservative treatment, and the risk of complications such as bowel infarction is low when the condition is promptly diagnosed and managed. | ||
== See Also == | |||
== | |||
* [[Superior mesenteric artery]] | * [[Superior mesenteric artery]] | ||
* [[Mesenteric ischemia]] | * [[Mesenteric ischemia]] | ||
* [[Aortic dissection]] | * [[Aortic dissection]] | ||
* [[Vascular surgery]] | * [[Vascular surgery]] | ||
[[Category:Vascular diseases]] | [[Category:Vascular diseases]] | ||
[[Category:Gastroenterology]] | [[Category:Gastroenterology]] | ||
[[Category:Rare diseases]] | [[Category:Rare diseases]] | ||
Latest revision as of 03:57, 6 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD medical weight loss NYC and sleep center NYC
| Isolated superior mesenteric artery dissection | |
|---|---|
 | |
| Synonyms | ISMAD |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Abdominal pain, nausea, vomiting |
| Complications | Bowel ischemia, Aneurysm |
| Onset | Typically in middle-aged adults |
| Duration | Variable |
| Types | N/A |
| Causes | Spontaneous or trauma |
| Risks | Hypertension, Atherosclerosis, Connective tissue disorder |
| Diagnosis | CT angiography, MRI, Ultrasound |
| Differential diagnosis | Mesenteric ischemia, Aortic dissection |
| Prevention | Control of risk factors |
| Treatment | Anticoagulation, Endovascular stenting, Surgery |
| Medication | N/A |
| Prognosis | Generally good with treatment |
| Frequency | Rare |
| Deaths | N/A |
Medical condition
Isolated superior mesenteric artery dissection (ISMAD) is a rare vascular condition characterized by the dissection of the superior mesenteric artery (SMA) without involvement of other major arteries. The SMA is a critical artery that supplies blood to a large portion of the intestines, including the small intestine and part of the large intestine.
Pathophysiology[edit]
The pathophysiology of ISMAD involves a tear in the intimal layer of the SMA, leading to the formation of a false lumen. This can result in compromised blood flow to the intestines, potentially causing mesenteric ischemia. The exact cause of the dissection is not always clear, but it may be associated with factors such as hypertension, atherosclerosis, and connective tissue disorders.
Clinical Presentation[edit]
Patients with ISMAD may present with a variety of symptoms, ranging from mild abdominal pain to severe, acute abdominal distress. The pain is often located in the epigastric region and may be associated with nausea and vomiting. In some cases, the condition may be asymptomatic and discovered incidentally during imaging studies for other reasons.
Diagnosis[edit]
The diagnosis of ISMAD is typically made using imaging techniques such as computed tomography angiography (CTA) or magnetic resonance angiography (MRA). These imaging modalities can reveal the presence of a dissection flap and the extent of the false lumen.
Management[edit]
Management of ISMAD depends on the severity of the condition and the symptoms presented. Conservative treatment, including anticoagulation and antihypertensive therapy, is often sufficient for asymptomatic or mildly symptomatic cases. In more severe cases, endovascular interventions such as stenting or surgical revascularization may be necessary to restore adequate blood flow.
Prognosis[edit]
The prognosis for patients with ISMAD is generally favorable, especially for those who receive appropriate medical management. Most patients respond well to conservative treatment, and the risk of complications such as bowel infarction is low when the condition is promptly diagnosed and managed.
