Prodhomme Olivier,  Baud Catherine,  Saguintaah Magali,  Bolivar Perrin Julie,  David Stephanie,  Taleb Arrada Ikram,  Couture Alain

Final Pr. ID: Poster #: SCI-011

To present the technique and the images obtain by postmortem ultrasound in the particular setting of fetal death and discuss its abilities and limitations.
To compare the diagnostic yields of joint analysis of ultrasound and X-Ray compared to autopsy in the setting of fetal death.
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Authors:  Prodhomme Olivier , Baud Catherine , Saguintaah Magali , Bolivar Perrin Julie , David Stephanie , Taleb Arrada Ikram , Couture Alain

Keywords:  Ultrasonography, Postmortem, Fetus, Fetal death, Postmortem Imaging

Dong Su-zhen

Final Pr. ID: Poster #: EDU-026

The cardiac system is the part of the fetal anatomy that most frequently suffers from congenital pathology . The fetal heart is routinely studied using first level obstetric ultrasonography. If a fetus is considered to have a cardiac defect, a detailed echocardiographic examination is required. The role of fetal magnetic resonance imaging (MRI) as a tool additional to ultrasound has grown exponentially. Unlike ultrasound imaging, however, MRI is unaffected by maternal and fetal conditions such as obesity and oligohydramnios, which particularly impair sonographic visualization of the fetal heart. In this educational poster, we will provide an overview of fetal cardiac MR imaging methods and their applications in congenital heart disease. This presentation will cover recent technical advances in fetal CMR, the modified anatomic segmental approach to image fetal congenital heart disease, imaging appearances of fetal normal cardiovascular structure and appearances of various structural congenital heart disease on fetal CMR. Multiple imaging examples of fetal congenital heart disease diagnosed by fetal cardiac MR will be presented. Read More

Authors:  Dong Su-zhen

Keywords:  Fetus, Magnetic resonance imaging, Congenital heart disease

Dong Su-zhen

Final Pr. ID: Poster #: EDU-010

1. Review the safety, limitations and advantages of fetal cardiac MR (CMR)
2. Discuss potentialindications of fetal CMR
3. Describe the technique of fetal CMR, including imaging sequences, imaging planes, the method
of overcoming motion artifact
4. Illustrate the appearance of normal fetal cardiac structures and present a modified anatomic
segmental approach of congenital heart disease (CHD) at prenatal CMR
5. Demonstrate examples of fetal CMR in the evaluation of various cardiovascular anomalies Read More

Authors:  Dong Su-zhen

Keywords:  Fetus, cardiac magnetic resonance, congenital heart disease

Aoki Hidekazu,  Nosaka Shunsuke,  Miyazaki Osamu,  Irahara Saho,  Okamato Reiko,  Tsutsumi Yoshiyuki,  Miyasaka Mikiko,  Sago Haruhiko,  Kanamori Yutaka,  Suzuki Yasuyuki

Final Pr. ID: Poster #: SCI-012

Congenital high airway obstruction syndrome (CHAOS) is a rare life-threatening disease and prenatal diagnosis is essential. Some characteristic features seen on fetal MRI are well-known: primary lesion (upper airway obstruction) and secondary changes (dilated trachea, flattened/inverted diaphragm, enlarged and hyperintense lung). It is also reported that these secondary changes may be reduced if tracheoesophageal fistula (TEF) is present. The aim of this study is to evaluate the accuracy of fetal MRI in the prenatal diagnosis of CHAOS by comparing results with those of normal fetuses. Read More

Authors:  Aoki Hidekazu , Nosaka Shunsuke , Miyazaki Osamu , Irahara Saho , Okamato Reiko , Tsutsumi Yoshiyuki , Miyasaka Mikiko , Sago Haruhiko , Kanamori Yutaka , Suzuki Yasuyuki

Keywords:  CHAOS, fetus, MRI

Pelizzari Mario,  Montalvetti Pablo

Final Pr. ID: Poster #: CR-009

Case Presentation
A 28-year-old patient, undergoing her second pregnancy, with no pathological or toxic clinical history, presented with an intra-abdominal fetal mass identified during 34-week gestational age routine ultrasound. A Fetal Magnetic Resonance Imaging (fMRI) was performed, revealing findings compatible with Fetus in Fetu (FiF).

Findings
The ultrasound examination revealed an intraperitoneal mass in the middle of the fetal abdomen, solid, heterogeneous, with fatty areas and calcified structures resembling long bones. Vascularized by the superior mesenteric artery and displaced abdominal organs without invading them. These findings were confirmed later with fMRI.
Birth was delivered via cesarean section at 38 weeks. Due to suspicion of FiF vs. Teratoma (Tt), tumor markers were tested with negative results. During follow-up, FiF growing was observed, leading to the decision to surgically remove the tumor at two months of age. Anatomopathologic examination confirmed the diagnosis of FiF. A computed tomography of the surgical specimen revealed characteristic FiF signs.

Discussion
With an estimated incidence of 1 in 500,000 births, FiF is a condition in which, due to abnormal embryogenesis in a monochorionic diamniotic pregnancy, one fetus grows abnormally within the body of the other. The diagnosis is based on imaging findings and is characterized by the presence of a separate vertebral column and the development of organs around this axis, indicating an early stage of fetal development. These features distinguish it from a highly differentiated Teratoma.
Although it is a benign condition, the mass can affect surrounding structures. Prenatal diagnosis is more feasible nowadays, and suspicion should arise when an encapsulated cystic mass with calcified components is identified.

Conclusion
Imaging plays a crucial role in the diagnosis due to its similarity to a teratoma, which could have malignant potential. Surgical treatment is required, and early detection allows for a favorable prognosis. Read More

Authors:  Pelizzari Mario , Montalvetti Pablo

Keywords:  Fetal MRI, Fetus in fetu

Singer Julia,  Bodea Jessica,  Gerard Perry,  Sandoval Claudio

Final Pr. ID: Poster #: CR-061

Germ cell tumors (GCT) comprise benign and malignant neoplasms arising from variation of normal differentiation of totipotent primordial germ cells. Pediatric GCT are rare, representing 3% of all malignant pediatric tumors with an estimated incidence of 0.9/100.000 children up to 15 years of age. Germ cell tumors are located in the gonads, sacrococcygeal region, retroperitoneum, anterior mediastinum and pineal gland. Herein we describe a case of fetus in fetu and maternal-fetal choriocarcinoma. Read More

Authors:  Singer Julia , Bodea Jessica , Gerard Perry , Sandoval Claudio

Keywords:  Germ Cell Tumors, Fetus in Fetu, Maternal-Fetal Choriocarcinoma