Radiology Case Reports (Oct 2022)

Central nervous system involvement of systemic ALK-positive histiocytosis with KIF5B-ALK fusion

  • Yuzuna Aoki, MD,
  • Masayuki Maeda, MD, PhD,
  • Seiya Kishi, MD,
  • Ryota Kogue, MD, PhD,
  • Fumine Tanaka, MD,
  • Maki Umino, MD, PhD,
  • Mami Takeoka, MD,
  • Ryo Hanaki, MD, PhD,
  • Junya Hirayama, MD, PhD,
  • Hiroto Yuasa, MD,
  • Hiroshi Imai, MD, PhD,
  • Masahiro Hirayama, MD, PhD,
  • Hajime Sakuma, MD, PhD

Journal volume & issue
Vol. 17, no. 10
pp. 3867 – 3870

Abstract

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ALK-positive histiocytosis is an emerging histiocytic entity that can involve a single organ or multiple organs. This disease frequently involves the central nervous system, and the importance of immunohistochemical and genetic analyses is emphasized for the accurate diagnosis of this rare entity. However, radiological findings of this disease have not been sufficiently described. Here, we report a case of a 3-year-old boy with ALK-positive histiocytosis with systemic masses that was identified to harbor KIF5B-ALK gene fusion.

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