Zusammenfassung
Ein supratentorieller, primitiver neuroektodermaler Tumor (stPNET) ist ein seltener
hochmaligner Tumor. Wir betreuten innerhalb von drei Jahren sechs Kinder mit stPNET.
Bei vier der sechs Kinder gelang eine makroskopisch vollständige Exstirpation. Alle
erhielten kraniospinale Bestrahlung und Chemotherapie nach dem HIT-91 Therapieoptimierungsschema.
Die beiden Kinder mit nicht vollständig entferntem Tumor starben nach 7 und 10 Monaten
in Folge Tumorprogression. Bei 2 der 4 Kinder mit komplett entferntem Tumor trat jeweils
nach 8 Monaten ein Lokalrezidiv auf. Sie starben nach 14 bzw. 18 Monaten. Bei einem
Kind trat nach 12 Monaten eine diffuse meningeale Aussaat auf. Trotz (Hochdosis-)Chemotherapie
systemisch und Mafosfamid intraventrikulär starb der Patient nach vorübergehender
Remission 21 Monate nach Diagnose in Folge des Tumors. Nur eines der 6 Kinder lebt
in kompletter Remission (7 Jahre). In Übereinstimmung mit der internationalen Literatur
haben Kinder mit stPNET eine schlechte Prognose, wobei im Rahmen multimodaler Therapiekonzepte
zunehmend von einem verbesserten Langzeitüberleben berichtet wird. Aufgrund der offensichtlichen
Heterogenität der Tumoren wird eine molekularbiologische Aufarbeitung an frischem
Tumormaterial hilfreich sein, um in kooperativen Protokollen eine Therapieoptimierung
zu erreichen.
Abstract
Supratentorial primitive neuroectodermal tumors (stPNETs) are malignant tumors. We
saw within three years six children with stPNETs. In four of the six children radical
resection could be achieved. All had craniospinal irradiation and chemotherapy according
to the HIT-91 protocol. The two children with incomplete resection died due to tumor
progression after 7 and 10 months. Two of the 4 children with complete tumor resection
had local relapses 8 months after diagnosis and died after 14 and 18 months. One child
had a diffuse meningeal relapse 12 months after diagnosis. Despite (high-dose) systemic
chemotherapy and intraventricular mafosfamide, he died 21 months after diagnosis due
to tumor although remission could be achieved. Only one child is still in remission
86 months after diagnosis.
Schlüsselwörter
supratentorieller primitiver neuroektodermaler Tumor - Therapie - Prognose
Key words
supratentorial primitive neuroectodermal tumor - therapy - prognosis
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Dr. Irene Schmid
Kinderklinik und Kinderpoliklinik im Dr. von Haunerschen Kinderspital · Ludwig-Maximilians-Universität
München
Lindwurmstr. 4
80337 München
Telefon: 49/89/51 60 28 42
Fax: 49/89/51 60 47 19
eMail: Irene.Schmid@med.uni-muenchen.de