Focal aneurysmal dilatation of subchorionic vessels simulating chorioangioma

Area of Science:

• Obstetrics and Gynecology
• Diagnostic Imaging
• Fetal Medicine

Background:

• Subchorionic vascular aneurysms are uncommon placental abnormalities.
• These lesions can mimic other conditions like chorioangioma on prenatal ultrasound.
• Accurate diagnosis is crucial for appropriate patient management.

Observation:

• A case of subchorionic vascular aneurysm is presented.
• Detailed sonographic evaluation included color Doppler and spectral analysis.
• Prenatal imaging findings were initially misinterpreted as chorioangioma.

Findings:

• Pathological analysis confirmed the diagnosis of subchorionic vascular aneurysm.
• The study highlights the potential for sonographic misdiagnosis.
• This is the first reported case in the ultrasound literature.

Implications:

• Increased awareness of placental aneurysms can improve diagnostic accuracy.
• Distinguishing aneurysms from malignancy avoids unnecessary interventions.
• Conservative management can be recommended for this benign condition.