MYOPERICYTOMA MIMICKING SUBCUTANEOUS MELANOMA METASTASIS

Myopericytomas (MPs) are rare benign tumors commonly found in young women, with fewer than 200 cases reported, often leading to misdiagnosis. Ultrasound is a valuable tool for diagnosing and managing these tumors. This report discusses a 58-year-old woman with a history of vulvar melanoma and inguinal lymph node involvement. During proton therapy and follow-up, a subcutaneous nodular lesion appeared on her right wrist. Ultrasound imaging showed a well-defined, hypoechoic, round dermal-subcutaneous lesion with posterior acoustic enhancement and intense peripheral vascularity, suggestive of a vascular tumor. Spectral Doppler showed a biphasic waveform. Shear wave elastography indicated a median value of 3.5 m/s and 31.71 kPa. The lesion was excised, and histopathological examination confirmed the diagnosis of MP, with immunohistochemical staining positive for smooth muscle actin, caldesmon, and CD34.

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Quiz 114

1 / 5

Why is the use of intense ultrasound in cancer biopsies considered advantageous?

 

It is more cost-effective than traditional methods

It is non-invasive and effective

It provides instant results

It reduces the need for anesthesia

2 / 5

What is the traditional method of obtaining genetic information from cancer biopsies?

 

MRI scans

Invasive surgical procedures

Physical examination

Blood tests

3 / 5

How does intense ultrasound improve the biopsy process for cancer patients?

 

By requiring more frequent procedures

By making the biopsy less invasive

By making the procedure more complex

4 / 5

What type of information does intense ultrasound extract during cancer biopsies?

 

Patient's age

Tumor size

Genetic information

Blood sugar levels

5 / 5

What is the primary benefit of using intense ultrasound for cancer biopsies?

 

More accurate diagnosis

Lower cost of treatment

Reduced need for invasive procedures

Faster recovery time

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