Retroperitoneal fetus in fetu presenting in a male infant: A case report and literature review

He, Yixiao; Ji, Yuzhu; Xie, Gang; Wang, Anqun

doi:10.1016/j.radcr.2022.03.018

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…FIF may present in the neonatal period as noted in our patient and is generally diagnosed at less than 2 years of age. FIF has also been reported in adolescents or adults, even as late as the fourth or fifth decade of life [4][5][6][7]. In the external type, the fetus is attached externally to the larger twin and is generally evident at birth.…”

Section: Discussionmentioning

confidence: 99%

Anesthetic Care During Exploratory Laparotomy and Excision of a Fetus-in-Fetu With a Combined General-Regional Anesthetic Technique Using a Caudal Epidural Catheter

Elhamrawy,

Syed,

Tobias

2023

J Med Cases

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Fetus-in-fetu (FIF) is a rare, congenital anomaly involving the presence of one of a pair of twins within the body of the other. It is postulated that this pathology occurs during embryogenesis of a diamniotic-monochorionic twin pregnancy with unequal division of the blastocele, which results in monozygotic, monochorionic, and diamniotic twins of unequal sizes. Presentation as an abdominal mass during the neonatal period or infancy is most common, although late diagnosis during the adult years may also occur. We report a 1-day-old, full-term female neonate who presented for exploratory laparotomy and excision of a FIF. We present the use of a combined generalregional technique using caudal epidural anesthesia. The etiology, presentation, appropriate workup, and treatment of FIF are presented. Previous anecdotal reports of anesthetic care for excision of FIF are reviewed.

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Section: Discussionmentioning

confidence: 99%

Anesthetic Care During Exploratory Laparotomy and Excision of a Fetus-in-Fetu With a Combined General-Regional Anesthetic Technique Using a Caudal Epidural Catheter

Elhamrawy,

Syed,

Tobias

2023

J Med Cases

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“…FIF is a rare pediatric tumor that affects 1 in 500,000 live births [3]. Though it was first described around 1800, the definition criteria differ.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the low incidence rate, it remains a pathological curiosity with an unclear etiology to this day. Diagnosis is either made by antenatal ultrasonography (USS) or as an incidental discovery of an asymptomatic abdominal mass [3]. Multidisciplinary prenatal and/or postnatal counseling helps in planning the management and follow-up care.…”

Section: Introductionmentioning

confidence: 99%

Single-center experience of fetus in fetu: A case series

Habachi,

Sabolic,

Mesic

et al. 2024

J Neonatal Surg

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Background: Fetus in fetu is a rare congenital malformation resulting from abnormal embryogenesis in a monochorionic diamniotic twinning gestation. This study aimed to document our experience with this anomaly in a developing country. Methods: This retrospective analysis covers cases of fetus in fetu diagnosed at our institution between 1999 and 2023. Patients presenting with an intracorporeal mass containing a vertebral column and an appropriate arrangement of organs and limbs around the axis were included in the study. Results: Five female patients with fetus in fetu were identified. The timing of diagnosis varied from incidental antenatal ultrasound discovery to postnatal abdominal mass presentation. The initial diagnosis involved radiological and serological investigations, confirmed by histopathology after surgical excision. The mean age at the time of surgery was 44 days. All patients underwent complete excision of the fetal mass, resulting in excellent postoperative outcomes and no recurrences. Conclusion: Fetus in fetu is a pediatric rarity and must be distinguished from a teratoma mass, which carries a high malignant potential. Histological and genetic studies may contribute to understanding the pathogenesis and etiology of the disease.

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Retroperitoneal fetus in fetu presenting in a male infant: A case report and literature review

Cited by 2 publications

References 26 publications

Anesthetic Care During Exploratory Laparotomy and Excision of a Fetus-in-Fetu With a Combined General-Regional Anesthetic Technique Using a Caudal Epidural Catheter

Anesthetic Care During Exploratory Laparotomy and Excision of a Fetus-in-Fetu With a Combined General-Regional Anesthetic Technique Using a Caudal Epidural Catheter

Single-center experience of fetus in fetu: A case series

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