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Ultrasonographic features of fibrous hamartoma of infancy

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Abstract

Objective

To review imaging features of fibrous hamartoma of infancy (FHI), focusing on ultrasonography (US) findings.

Materials and methods

We retrospectively reviewed pediatric patients who were diagnosed with pathologically confirmed FHI in two children’s hospitals from 2004 to 2013. Imaging features of US, Doppler US, and magnetic resonance imaging (MRI) were evaluated.

Results

Thirteen pediatric patients (M:F = 7:6; age 5–22 months, mean 11.3 months) were included. Mean lesion size was 3.2 cm (range, 0.7–8.0 cm). The tumors were located in the back (n = 4), scrotum (n = 2), scalp, shoulder, axilla, forearm, intergluteal cleft, inguinal area, and thigh. US was performed in 11 patients. With the exception of two scrotal masses, all masses were located in the dermal and subcutaneous layer. All masses demonstrated heterogeneous hyperechogenicity with a “serpentine pattern” of intervening hypoechoic portions in the hyperechoic mass. The margins were ill-defined (n = 9) or lobulated (n = 2). Doppler US was performed in nine patients and showed no (n = 6) or minimal (n = 3) vascularity. MRI was performed in five patients and the masses showed heterogeneous signal intensity with the presence of fat on T1- and T2-weighted images.

Conclusions

FHI is a tumor that is typically located in the dermal and subcutaneous layer in young children less than 2 years old and presents as a heterogeneously hyperechoic mass with a “serpentine pattern” and ill-defined or lobulated margin on US and no remarkable vascularity on Doppler US.

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Conflict of interest

The authors declare that they have no conflicts of interest.

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Authors and Affiliations

  1. Department of Radiology and Research Institute of Radiological Science, Severance Children’s Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Korea

    Seungsoo Lee, Myung-Joon Kim & Mi-Jung Lee

  2. Department of Radiology, Seoul National University Children’s Hospital, Seoul, Korea

    Young-Hun Choi & Jung-Eun Cheon

  3. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea

    Myoung Ju Koh

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  1. Seungsoo Lee
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  2. Young-Hun Choi
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  3. Jung-Eun Cheon
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  4. Myung-Joon Kim
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  5. Mi-Jung Lee
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Correspondence to Mi-Jung Lee.

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Lee, S., Choi, YH., Cheon, JE. et al. Ultrasonographic features of fibrous hamartoma of infancy. Skeletal Radiol 43, 649–653 (2014). https://doi.org/10.1007/s00256-014-1838-1

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  • DOI: https://doi.org/10.1007/s00256-014-1838-1

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