Remnants of fetal circulation: appearance on MDCT in adults

Area of Science:

• Medical Imaging
• Anatomy
• Embryology

Background:

• Fetal circulation structures typically involute after birth.
• Remnants of fetal circulation can occasionally persist into adulthood.
• Understanding these remnants is important for anatomical and pathological assessments.

Purpose of the Study:

• To describe the MDCT appearance of fetal circulation remnants in adults.
• To document the common locations and morphology of these structures.

Main Methods:

• Multi-detector computed tomography (MDCT) scans of adult patients were reviewed.
• Image analysis focused on identifying specific fetal circulation remnants.

Main Results:

• The umbilical vein remnant was visualized in a significant portion of cases.
• The ductus venosus, foramen ovale, ductus arteriosus, and umbilical arteries also showed characteristic appearances on MDCT.
• Detailed descriptions of the morphology and common findings for each remnant were established.

Conclusions:

• MDCT is a valuable tool for visualizing adult remnants of fetal circulation.
• Familiarity with these MDCT findings aids in accurate anatomical interpretation.
• These remnants, though usually asymptomatic, can be relevant in certain clinical contexts.