Masson's Lesion: A Very Rare Cardiac Mass

Area of Science:

• Cardiovascular Pathology
• Surgical Oncology
• Diagnostic Imaging

Background:

• Masson lesion is a rare vascular tumor typically affecting skin and soft tissues.
• Accurate diagnosis is crucial to guide appropriate treatment and avoid aggressive therapies.
• Histologic examination is the definitive diagnostic method.

Observation:

• A unique case of Masson lesion presenting as an asymptomatic pericardial mass is described.
• Multimodality imaging was employed for noninvasive characterization of the mass.
• The presentation in the pericardium is highly unusual for this type of lesion.

Findings:

• The study discusses relevant imagiologic and pathologic findings for differential diagnosis of pericardial masses.
• Key features aiding in the distinction of Masson lesion from other pericardial conditions are presented.
• Histopathological correlation confirmed the diagnosis.

Implications:

• This case underscores the potential for Masson lesions to occur in extratissular locations.
• Highlights the utility of advanced imaging in characterizing rare cardiac masses.
• Emphasizes the necessity of interdisciplinary communication for managing uncommon presentations of Masson lesions.