Extensive Plexiform Neurofibroma of the Right Thigh and Pelvis in a Child with Genetically Confirmed Neurofibromatosis Type 1: A Case Report.

Abstract: Neurofibromatosis type 1 (NF1) is an autosomal dominant neurocutaneous disorder; plexiform neurofibromas are pathognomonic, and extensive disease may mimic malignancy. An 11-year-old girl had a congenital, gradually progressive, painful hyperpigmented swelling over the right thigh and glut...

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Publicado en:Journal of Pediatric Neurosciences Vol. 21; no. 2; pp. 183 - 190
Autores principales: Kothimira, Vamsi Krishna, Nagaram, Punith Patak, Balaji, Subhasri, Bodagala, Vijayalakshmi Devi
Formato: case study diagnostic images pictorial tables/charts Journal Article
Publicado: Wolters Kluwer India Pvt Ltd Apr-Jun2026
Acceso en línea:Ver este registro en EBSCOhost
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      dt: Apr-Jun2026
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      pub: Wolters Kluwer India Pvt Ltd
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        10.4103/jpn.jpn_152_25
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        atl: Extensive Plexiform Neurofibroma of the Right Thigh and Pelvis in a Child with Genetically Confirmed Neurofibromatosis Type 1: A Case Report.
      aug:
        au:
          Kothimira, Vamsi Krishna
          Nagaram, Punith Patak
          Balaji, Subhasri
          Bodagala, Vijayalakshmi Devi
        affil: Department of Pediatrics, Sri Padmavathi Medical College for Women, SVIMS, Tirupati, Andhra Pradesh, India
      sug:
        subj:
          Neurofibromatosis 1 Diagnosis
          Neurofibroma Diagnosis
          Pelvic Neoplasms
          Genetic Screening Methods
          Diagnostic Imaging
          Female
          Child
          Magnetic Resonance Imaging
          Positron-Emission Tomography
          Ultrasonography
          Cafe-au-Lait Spots Pathology
          Vulvar Diseases Etiology
          Genital Neoplasms, Female
          Mutation
          Child: 6-12 years
          Female
      ab: Abstract: Neurofibromatosis type 1 (NF1) is an autosomal dominant neurocutaneous disorder; plexiform neurofibromas are pathognomonic, and extensive disease may mimic malignancy. An 11-year-old girl had a congenital, gradually progressive, painful hyperpigmented swelling over the right thigh and gluteal region. She had multiple café-au-lait macules, axillary freckling, a large "bag-of-worms" plexiform neurofibroma, clitoromegaly, and Lisch nodules. Contrast-enhanced magnetic resonance imaging showed diffuse infiltrative T2/short tau inversion recovery hyperintense, minimally enhancing soft-tissue thickening involving the right thigh, gluteal region, perineum, and extraperitoneal pelvis, with an elongated lesion posterior to the urinary bladder and clitoral involvement. Whole-body 18 F-fluorodeoxyglucose positron emission tomography–computed tomography demonstrated only low-grade uptake without a hypermetabolic focus. Clinical exome sequencing identified a heterozygous truncating NF1 variant. This rare pelvic and external genital plexiform neurofibroma in a child with NF1 highlights the value of multimodality imaging and genetic confirmation for diagnosis, counseling, and surveillance. Early recognition helps avoid unnecessary biopsy and supports multidisciplinary follow-up planning.
      pubtype: Academic Journal
      doctype:
        case study
        diagnostic images
        pictorial
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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