title: [Therapeutic difficulties in soft tissue sarcoma occurring in children with neurofibromatosis type 1 - own observations].
abstract: Neurofibromatosis type I (NF1) is one of the most common genetic disorders in man, predisposing to benign and malignant tumours. The most common malignancies comprise nervous system tumours, less frequently soft tissue sarcomas (STS) and leukaemia - myelodysplasia syndrome. Herein we report five cases of STS diagnosed in children affected with NF1 (3 girls and 2 boys, age: 8 months -17 years). Neurogenic tumours were diagnosed in three children (malignant peripheral nerve-sheath tumour in two and malignant triton tumour in one), while soft tissue sarcomas of rhabdomyosarcoma origin were found in two patients. In four cases the primary tumours were highly locally advanced, unresectable and located in pelvis minor. All patients received protocols for soft STS: CWS-91, 96 and 2002. The paper presents the clinical symptomatology, the course and outcome in children with NF1 affected with STS.
  
  
  CONCLUSIONS
  basing on our own observations STS in NF1 seems to have poor prognosis in spite of combined therapy. Since early diagnosis is essential, children with NF1 should remain under the care of the oncologist.
authors.affiliation: Klinika Pediatrii, Hematologii, Onkologii i Endokrynologii, Akademia Medyczna, ul. Debinki 7, Gdańsku, Poland. ebien@amg.gda.pl
authors.forename: Ewa
authors.initials: E
authors.lastname: Bień
authors.forename: Teresa
authors.initials: T
authors.lastname: Stachowicz-Stencel
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Polczyńska
authors.forename: Danuta
authors.initials: D
authors.lastname: Sierota
authors.forename: Joanna
authors.initials: J
authors.lastname: Stefanowicz
authors.forename: Anna
authors.initials: A
authors.lastname: Szołkiewicz
authors.forename: Elzbieta
authors.initials: E
authors.lastname: Drozyńska
authors.forename: Dorota
authors.initials: D
authors.lastname: Birkholtz
authors.forename: Ewa
authors.initials: E
authors.lastname: Izycka-Swieszewska
authors.forename: Piotr
authors.initials: P
authors.lastname: Czauderna
authors.forename: Wojciech
authors.initials: W
authors.lastname: Kosiak
authors.forename: Mirosława
authors.initials: M
authors.lastname: Dubaniewicz
authors.forename: Marta
authors.initials: M
authors.lastname: Reiter
authors.forename: Anna
authors.initials: A
authors.lastname: Balcerska
mesh_terms: D000293:Adolescent; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009367:Neoplasm Staging; D016609:Neoplasms, Second Primary / Q000473:pathology / Q000628:therapy*; D009456:Neurofibromatosis 1 / Q000628:therapy*; D011379:Prognosis; D012509:Sarcoma / Q000473:pathology / Q000628:therapy*; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000628:therapy*; D016896:Treatment Outcome