Going out on a limb for a difficult diagnosis: a case report.
Sacral tumors with fetiform features are rare and pose a diagnostic challenge to the ultrasonologist. Sacrococcygeal teratomas (SCT) and parasitic twins can have very similar sonographic features but have different implications to an affected pregnancy. While postnatal histopathology is ultimately necessary to distinguish between a SCT and a heteropagus twin, certain characteristics, such as the presence of a vertebral column and the pattern and rate of tumor growth, may be useful to guide counseling and management decisions.
Division of Maternal-Fetal Medicine, Columbia University Medical Center, New York, NY. Electronic address: ced2104@cumc.columbia.edu.
Cara
C
Pessel
Victoria
V
Fratto
Sherelle
S
Laifer-Narin
Lynn L
LL
Simpson
Chia-Ling
CL
Nhan-Chang
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007231:Infant, Newborn; D010386:Pelvic Neoplasms / Q000000981:diagnostic imaging* / Q000196:embryology / Q000473:pathology / Q000601:surgery; D011247:Pregnancy; D012445:Sacrococcygeal Region / Q000000981:diagnostic imaging* / Q000196:embryology; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging* / Q000196:embryology; D013724:Teratoma / Q000000981:diagnostic imaging* / Q000196:embryology* / Q000473:pathology / Q000601:surgery; D014428:Twins, Conjoined / Q000196:embryology; D016216:Ultrasonography, Prenatal
Heteropagus twin; Prenatal diagnosis; Sacral mass; Sacrococcygeal teratoma