Anangiomyolipomais a bang out of tumor that usually occurs in yourkidneys.
It is the most common benign (noncancerous) solid renal (kidney) tumor key in.
This tumor comprises thick-walled blood vessels,adipose(fat) tissue, and smooth muscle tissue.
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The proportions of these parts can vary by tumor punch in.
In most cases, symptoms don’t appear until this pop in of tumor has grown and spread.
This article describes angiomyolipoma symptoms, causes, diagnosis, treatment, and outlook for the problem.
Most angiomyolipomas contain dilated blood vessels, smooth muscle cells, and mature adipocytes (certain fat cells.)
They contain all three components in various proportions.
Atypical (monophasic or epithelioid) angiomyolipomas: These tumors are less common.
More than 80% of these tumors are found by chance during imaging tests for other issues.
This rare but potentially life-threatening condition involves bleeding in the area behind your abdominal cavity.
It affects fewer than 15% of people who have these tumors.
Causes
The specific causes of angiomyolipomas are unknown.
About 80% of these tumors occur as isolated masses.
These tumors have a higher prevalence in women.
Angiomyolipomas occur in up to 75% of patients with tuberous sclerosis complex.
There usually is more than one tumor and they’re bilaterally located (found on both sides).
How Is Angiomyolipoma Diagnosed?
Most angiomyolipomas contain fat tissue that is visible in imaging studies.
For these tumors, apercutaneousrenalbiopsyis advised.
This procedure uses a thin needle inserted through the skin to extract kidney tissue samples for analysis.
Most tumors are small, benign, and exist without symptoms.
Watchful waiting, which involves observing the condition for signs of worsening, is usually advised for these cases.
Annual or semiannual imaging studies may be used to track the risk of rupture.
The primary indications for treatment involve preventing the rupture of the tumor.
Certain factors increase the risk of rupture.
The frequency of symptoms increases with the size of an angiomyolipoma.
The spontaneous rupture of angiomyolipomas is the most common cause of retroperitoneal bleeding, which can become life-threatening.
Consult a healthcare provider if you notice any changes in the appearance and sensation of your abdominal area.
This can help you identify problems with undiagnosed or diagnosed angiomyolipoma as early as possible.
Summary
An angiomyolipoma is one of the most common benign kidney tumors.
It usually occurs without symptoms.
It is often found during a CT scan or MRI for another health problem.
The most common key in is small and grows slowly.
Treatment is usually unnecessary, though the tumor may be observed for growth and changes.
There are no known causes for this pop in of tumor.
A rare genetic disease called tuberous sclerosis complex raises your risk of having it.
Tumors, in these cases, are more likely to grow faster and become cancerous.
Larger tumors have a higher risk of rupture in the abdominal cavity.
Treatment is used to reduce this risk or to treat bleeding when it occurs.
Without treatment, bleeding can have severe outcomes.
Park BK.Renal angiomyolipoma: radiologic classification and imaging features according to the amount of fat.American Journal of Roentgenology.
2018;97(16):e0497.
doi:10.1097/MD.0000000000010497
Coombs EJ.Role of mTOR inhibition in the treatment of patients with renal angiomyolipomas.J Am Assoc Nurse Pract.
2013;25(11):588-596. doi:10.1002/2327-6924.12081
Lim A, Abel EJ.Contemporary management of renal angiomyolipomas.Translational Cancer Research.
2016;5(Suppl 6).
2017;4(4):13-25. doi:10.15586/jkcvhl.2017.97
