Pseudocyst: Difference between revisions

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'''Pseudocyst''' is a pathological condition characterized by a cyst-like sac that is not lined by [[epithelium]]. Instead, it is surrounded by a wall of fibrous or granulation tissue. Pseudocysts can occur in various parts of the body and are often associated with conditions such as [[pancreatitis]], [[trauma]], or [[infection]].
== Pseudocyst ==


==Definition==
A '''pseudocyst''' is a fluid-filled cavity that resembles a cyst but lacks an epithelial or endothelial lining. Pseudocysts can occur in various parts of the body and are often associated with inflammation, trauma, or infection. Unlike true cysts, which are lined by epithelium, pseudocysts are surrounded by fibrous tissue.
A '''pseudocyst''' is a collection of fluid enclosed by a wall of fibrous or granulation tissue. Unlike true [[cyst]]s, pseudocysts do not have an epithelial lining. The term "pseudocyst" is derived from the Greek words "pseudo", meaning false, and "cyst", meaning sac.


==Causes==
== Types of Pseudocysts ==
Pseudocysts can be caused by a variety of conditions. They are often associated with [[pancreatitis]], particularly chronic pancreatitis. They can also occur as a result of trauma or infection. In some cases, pseudocysts can form in the absence of any identifiable cause.


==Symptoms==
=== Pancreatic Pseudocyst ===
The symptoms of a pseudocyst can vary depending on its location and size. Common symptoms include pain, swelling, and discomfort in the area of the pseudocyst. If the pseudocyst is located in the pancreas, symptoms may also include nausea, vomiting, and weight loss.
A [[pancreatic pseudocyst]] is a collection of fluid rich in pancreatic enzymes, blood, and necrotic tissue, typically occurring after an episode of acute [[pancreatitis]]. These pseudocysts are usually located in the lesser sac of the abdomen and can cause abdominal pain, nausea, and vomiting.


==Diagnosis==
=== Pulmonary Pseudocyst ===
The diagnosis of a pseudocyst is typically made through imaging studies such as [[ultrasound]], [[computed tomography (CT) scan]], or [[magnetic resonance imaging (MRI)]]. These tests can help to identify the presence and location of the pseudocyst, as well as its size and characteristics.
A [[pulmonary pseudocyst]] is a rare complication of [[pulmonary contusion]], often resulting from blunt chest trauma. These pseudocysts are air-filled cavities that can be seen on imaging studies such as a CT scan. They are usually self-limiting and resolve without intervention.


==Treatment==
[[File:Pulmonary_contusion_pseudocyst_CT.jpg|thumb|right|CT scan showing a pulmonary contusion with a pseudocyst.]]
The treatment of a pseudocyst depends on its cause, location, and size, as well as the patient's symptoms and overall health. Treatment options may include observation, drainage, or surgery. In some cases, treatment of the underlying condition, such as pancreatitis, may also be necessary.


==See also==
=== Renal Pseudocyst ===
Renal pseudocysts are uncommon and can occur due to trauma or infection in the kidney. They are often asymptomatic but can sometimes cause flank pain or hematuria.
 
== Diagnosis ==
The diagnosis of a pseudocyst typically involves imaging studies such as [[ultrasound]], [[CT scan]], or [[MRI]]. These imaging modalities help differentiate pseudocysts from other types of cystic lesions by revealing the lack of an epithelial lining.
 
== Treatment ==
The treatment of pseudocysts depends on their location, size, and symptoms. Many pseudocysts resolve spontaneously without treatment. However, large or symptomatic pseudocysts may require intervention, such as drainage or surgical removal.
 
== Related Pages ==
* [[Cyst]]
* [[Cyst]]
* [[Pancreatitis]]
* [[Pancreatitis]]
* [[Computed tomography (CT) scan]]
* [[Pulmonary contusion]]
* [[Magnetic resonance imaging (MRI)]]
* [[Trauma]]
 
{{Medicine}}


[[Category:Medical conditions]]
[[Category:Pathology]]
[[Category:Pathology]]
[[Category:Medical conditions]]
[[Category:Gastroenterology]]
{{Medicine-stub}}

Revision as of 16:33, 16 February 2025

Pseudocyst

A pseudocyst is a fluid-filled cavity that resembles a cyst but lacks an epithelial or endothelial lining. Pseudocysts can occur in various parts of the body and are often associated with inflammation, trauma, or infection. Unlike true cysts, which are lined by epithelium, pseudocysts are surrounded by fibrous tissue.

Types of Pseudocysts

Pancreatic Pseudocyst

A pancreatic pseudocyst is a collection of fluid rich in pancreatic enzymes, blood, and necrotic tissue, typically occurring after an episode of acute pancreatitis. These pseudocysts are usually located in the lesser sac of the abdomen and can cause abdominal pain, nausea, and vomiting.

Pulmonary Pseudocyst

A pulmonary pseudocyst is a rare complication of pulmonary contusion, often resulting from blunt chest trauma. These pseudocysts are air-filled cavities that can be seen on imaging studies such as a CT scan. They are usually self-limiting and resolve without intervention.

CT scan showing a pulmonary contusion with a pseudocyst.

Renal Pseudocyst

Renal pseudocysts are uncommon and can occur due to trauma or infection in the kidney. They are often asymptomatic but can sometimes cause flank pain or hematuria.

Diagnosis

The diagnosis of a pseudocyst typically involves imaging studies such as ultrasound, CT scan, or MRI. These imaging modalities help differentiate pseudocysts from other types of cystic lesions by revealing the lack of an epithelial lining.

Treatment

The treatment of pseudocysts depends on their location, size, and symptoms. Many pseudocysts resolve spontaneously without treatment. However, large or symptomatic pseudocysts may require intervention, such as drainage or surgical removal.

Related Pages