Fetus in fetu: From Prenatal Sonographic Diagnosis to Postnatal Confirmation

Song, Qibin; Jiang, Xiaoping; Jiang, Yu; Ning, Gang; Tang, Yang

doi:10.1159/000363056

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…To date, 187 cases of FIF have been described [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], and the vast majority were only detected postnatally (8 of 9 cases). In cases detected prenatally (1 of 9 cases) (▶table 1), the earliest diagnosis was achieved at 17 weeks of gestation [25].…”

Section: Case Reportmentioning

confidence: 99%

“…In cases detected prenatally (1 of 9 cases) (▶table 1), the earliest diagnosis was achieved at 17 weeks of gestation [25]. In 5 of 9 cases with a prenatal diagnosis, the diagnosis was achieved within the 2 nd trimester [17,18,22,23,25] and the 4 other cases within the 3 rd trimester [19][20][21]24] In 2 of 9 cases, the diagnosis of fetus in fetu was changed after the histopathological examination because FIF criteria were not met. In 5 of 9 cases with a prenatal diagnosis, FIF was located predominantly within the abdominal cavity of the host.…”

Section: Case Reportmentioning

confidence: 99%

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Prenatal Diagnosis of Fetus in Fetu pregnancy

Goette

Seitz

Vahdad

et al. 2018

Z Geburtshilfe Neonatol

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Section: Case Reportmentioning

confidence: 99%

Section: Case Reportmentioning

confidence: 99%

Prenatal Diagnosis of Fetus in Fetu pregnancy

Goette

Seitz

Vahdad

et al. 2018

Z Geburtshilfe Neonatol

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“…[14][15] In this report, we summarized the imaging performance and postoperative pathologic histology inspection of retroperitoneal FIF which have been published in English from 2010 to 2015. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] ( Table 1)…”

Section: Discussionmentioning

confidence: 99%

Fetus-in-fetu in an 8-month-old girl

Zhao¹,

Bai²

2016

Preprint

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Fetus in fetu (FIF) is a very rare congenital malformation with an incidence of 1/500,000 live births. These children are often hospitalized because of vomiting, abdominal distension or abdominal mass found by their parents. The most common position for the parasitic fetus is the retroperitoneum but other position such as the scrotal sac, cranial cavity, sacrococcygeal region, back , oral cavity has been reported. FIF is often misdiagnosed as a mature teratoma. Ultrasound, CT, MRI are of great significance in distinguishing between FIF and teratoma. The postoperative pathological examination may reveal axial skeleton which can make a definitive diagnosis of FIF. In this report, we present a case of FIF in an 8-month-old girl.

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“…A limited number of cases of FIF have been detected prenatally as cystic intra-abdominal masses growing inside the fetus. 2 The oldest patient with documented FIF was a 47-year-old man. 3 To distinguish a FIF from a teratoma, Gunaydin et al 4 described a FIF as a mass containing a vertebral axis with organs and limbs arranged around it.…”

Section: Introductionmentioning

confidence: 99%

Fetus in Fetu in the Scrotal Sac

Song

Chen

et al. 2015

Medicine

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Fetus in fetu (FIF) is a rare congenital anomaly. The most common site at which FIF occurs is the retroperitoneum. The mechanisms underlying the development of FIF have not been fully elucidated. The monozygotic twin theory postulates that FIF results from the unequal division of the totipotent cells of the blastocyst. However, the monozygotic twin theory does not explain all cases of FIF.Herein, we describe the clinical characteristics of a 20-day-old infant with scrotal sac swelling. Ultrasonography and computed tomography revealed the presence of a mass consistent with a FIF rather than a teratoma. Surgical removal and a subsequent pathological evaluation demonstrated that the anencephalic fetus exhibited limb buds adjacent to a palpable vertebral column, supporting the diagnosis of FIF. The infant had an uneventful recovery and was discharged on the fifth postoperative day. In the present report, the pathogenesis, presentation, diagnosis, and management of FIF, as well as new concepts emerging in this area of research, are discussed.Although the majority of cases of FIF may be diagnosed preoperatively, FIF should be distinguished from teratoma because the latter has substantial malignant potential. The recommended treatment for FIF is complete resection. To confirm the diagnosis of FIF, pathological examination, karyotyping, serologic marker assessment, and DNA restriction site mapping should be performed after removing the mass. Although FIF is thought to be a benign disorder, follow-up is necessary as a precaution against malignant recurrence, which has been described once.

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Fetus in fetu: From Prenatal Sonographic Diagnosis to Postnatal Confirmation

Abstract: A case of prenatal sonographic diagnosis of fetus in fetu is described. Postnatal laparotomy was performed and the diagnosis was confirmed by pathological examination.

Cited by 7 publications

References 4 publications

Prenatal Diagnosis of Fetus in Fetu pregnancy

Prenatal Diagnosis of Fetus in Fetu pregnancy

Fetus-in-fetu in an 8-month-old girl

Fetus in Fetu in the Scrotal Sac

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