How nature preserves fetuses.

Area of Science:

• Hematology
• Obstetrics
• Pathology

Background:

• Amyloidosis, characterized by protein misfolding and deposition, presents unique challenges during pregnancy.
• While AA amyloidosis in pregnancy is documented, AL amyloidosis is exceptionally rare.
• Familial Mediterranean Fever-associated AA amyloidosis in pregnancy often leads to fetal growth issues and preeclampsia.

Observation:

• A pregnant woman presented with leg edema and hypoalbuminemia, later diagnosed with AL amyloidosis.
• Fetal growth retardation necessitated a preterm cesarean section at 27 weeks, resulting in a healthy infant.
• Amyloid deposits were detected on the maternal but not the fetal placental surface.

Findings:

• This is the first reported case of AL amyloidosis diagnosed during pregnancy.
• Pregnancy appears to suppress AA amyloid formation, potentially protecting the fetus.
• Amyloidosis in pregnancy, regardless of type, is associated with poor maternal and fetal outcomes.

Implications:

• Mild pregnancy-related edema and proteinuria may mask serious conditions like amyloidosis.
• Increased vigilance for amyloidosis is crucial in pregnant patients presenting with non-specific symptoms.
• This case underscores the need for further research into amyloidosis pathophysiology during gestation.