Fetus in fetu: Review of the literature over the past 15 years

Prescher, Lindsey; Butler, Warren L.; Vachon, Tyler; Henry, Marion C.W.; Latendresse, Thomas; Ignacio, Romeo C.

doi:10.1016/j.epsc.2015.10.006

Cited by 34 publications

(78 citation statements)

References 25 publications

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“…Majority of the reported cases of FIF are found in infancy and neonatal age group unlike our case 10–14. Excluding the present case, only seven adult cases of FIF have been reported in the literature 15. Among adult cases of FIF, the oldest and the youngest case was 47 years and 20 years old respectively, while the age of present case was only 17 years 1 16.…”

Section: Discussionmentioning

confidence: 46%

Fetus in fetu in an adult woman

Kumar¹,

Paswan

Kumar

et al. 2019

BMJ Case Rep

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Fetus in fetu (FIF) is an extremely rare condition in which malformed fetus is found most commonly in the retroperitoneum of living twin. It occurs in about 1 in 500 000 live births and less than 200 cases have been reported in medical literature. We report FIF in a 17-year-old woman unlike other cases which were usually detected in early age and in male gender. This is the eighth case of adult FIF and the first case of FIF in adult woman worldwide. Preoperative diagnosis of FIF on CT was made and planned for exploratory laparotomy. The excised malformed fetus in a sac was proven as FIF on the basis of histopathological examination. In view to avoid such late presentation, early detection of FIF with radiological imaging in clinically suspected case is recommended. Surgical excision is the ideal treatment even teratoma is the differential diagnosis.

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Section: Discussionmentioning

confidence: 46%

Fetus in fetu in an adult woman

Kumar¹,

Paswan

Kumar

et al. 2019

BMJ Case Rep

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“…Notably, most FIFs are anencephalic and acardiac. The superior mesenteric artery of the autosite is often reported as the feeding vessel to the FIF [2,4].…”

Section: Discussionmentioning

confidence: 99%

“…Prescher L.M. et al reported that 3D reconstructions and computed tomography angiography (CTA) help in exact anatomical localization and feeding vessel identification preoperatively [2]. On MRI, FIF shows a well-defined mass of mixed high, intermediate and low intensities.…”

Section: Discussionmentioning

confidence: 99%

Preoperative diagnosis of a “humanoid” fetus in fetu using multimode ultrasound: a case report

et al. 2020

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Background Fetus in fetu (FIF) is a rare congenital anomaly. The preoperative diagnosis of FIF and differentiating it from teratoma and other abdominal tumors can be challenging for radiologists. Clarification of the blood supply and the relationship with the surrounding vessels is especially helpful for successful surgery; however, multimode ultrasound (US) performed for FIF has rarely been explored. Here, we first report a “humanoid” FIF case diagnosed by multimode US examinations, with the use of contrast-enhanced ultrasound (CEUS) for clarifying the blood supply features. Case presentation A 25-day-old preterm male infant was referred to our hospital for surgery. The US and computed tomography (CT) examinations led to a diagnosis of teratoma at the local hospital. The laboratory workup at our hospital revealed an elevation of total bilirubin, direct bilirubin, indirect bilirubin, alpha-fetoprotein, and neuron-specific enolase levels. A precise diagnosis and differentiation from teratoma, hepatoblastoma, neuroblastoma and other abdominal tumors were needed. In addition, the blood supply and the relationship with the surrounding vessels needed clarification prior to surgery. Multimode US examinations were performed and the features of a “humanoid” FIF as well as the blood supply for the abdominal lesion of the infant were suggested by grayscale US, color Doppler flow imaging (CDFI), and CEUS. Furthermore, CDFI and CEUS revealed an aorta-like structure and umbilical cord-like blood vessels in the “humanoid” FIF, and the CEUS helped with marking the surface of the infant’s abdominal wall. To the best of our knowledge, this is the first case report of CEUS in FIF, and the blood supply was clearly demonstrated in the FIF. The intraoperative findings confirmed our multimode US findings and revealed a “humanoid” FIF. The infant quickly recovered after the operation and had no positive findings at the 2-year follow-up visit. Conclusions Multimode US was helpful in diagnosing the rare FIF without radiation exposure. Specifically, CEUS clearly demonstrated the limb branch vessel-like structures, the abdominal aorta-like structure and the blood supply, which was useful for the FIF diagnosis and for avoiding damage to important vessels during the operation.

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“…In a literature review of 95 FIF cases >60% was found in male, >70% was retroperitoneal and >75% had vertebral column. 27…”

Section: Discussionmentioning

confidence: 99%

Series of rare diagnosis and presentations of abdominal mass in children: a great learning experience

Ghosh

Chakravorty

Biswas

et al. 2020

Int J Contemp Pediatr

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Abdominal mass is a common finding in children, either palpable or radiologically evident surprisingly. Some of them are rare tumors. Functional active tumors are rarely palpable but present with varied arrays of symptoms. In this series authors are discussing few rare cases with atypical presentations such as- teratoma arising from adrenal gland, teratoma presenting with hypertension, fetus in fetu (Girl and Boy child), adrenocortical tumor presenting as precocious puberty and adrenal pheochromocytoma with features of cushing’s syndrome. These atypical presentations may have pose a challenge in diagnosis and management for the treating team with first time occurrence specifically if they are handling them for first time.

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Fetus in fetu: Review of the literature over the past 15 years

Cited by 34 publications

References 25 publications

Fetus in fetu in an adult woman

Fetus in fetu in an adult woman

Preoperative diagnosis of a “humanoid” fetus in fetu using multimode ultrasound: a case report

Series of rare diagnosis and presentations of abdominal mass in children: a great learning experience

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