Extracutaneous melanomas: a primer for the radiologist

Area of Science:

• Radiology
• Oncology
• Dermatology

Background:

• Extracutaneous melanomas are rare but aggressive cancers.
• They exhibit distinct clinical and biological behaviors compared to cutaneous melanomas.
• Higher frequency of metastatic disease and poorer prognosis are characteristic.

Purpose of the Study:

• To offer a thorough review of imaging characteristics of extracutaneous melanomas.
• To highlight the role of various imaging modalities in patient management.
• To educate radiologists on recognizing extracutaneous melanoma and its metastatic patterns.

Main Methods:

• Review of imaging features across multiple modalities.
• Discussion of diagnostic and prognostic implications.
• Integration of imaging findings with clinical and therapeutic contexts.

Main Results:

• Extracutaneous melanomas show unique imaging manifestations.
• Distinct patterns of metastatic spread are observed.
• Imaging is crucial for assessing treatment response and toxicities.

Conclusions:

• Extracutaneous melanomas require specific diagnostic and management considerations.
• Imaging modalities (US, CT, MRI, PET/CT) are vital for comprehensive evaluation.
• Radiologists' awareness of these tumors is essential for optimal patient care.