We present the diŠusion-weighted imaging (DWI) ˆndings for a malignant peripheral nerve sheath tumor arising in a retroperitoneal plexiform neuroˆbroma in a patient with neuroˆbromatosis type 1. Signal intensity of the malignant area was high on DWI and low on the apparent diŠusion coe‹cient map and diŠered from ˆndings for the benign area. DWI enabled clear diŠerentiation between malignant and...

Neurofibromatosis type 1 (NF1) (von Recklinghausen disease) is an autosomal dominantly inherited neurocutaneous disorder which affects many systems like ocular, cutaneous and nervous systems and seen in 1:3500 births. Cardinal diagnostic criteria of NF1 were established in 1987 by National Institutes of Health Consensus.Early diagnosis and the findings of NF1 are unclear in childhood, but with ...

We present the case of a malignant peripheral nerve sheath tumour (MPNST) that developed on the upper lip of an 86 year old woman. MPNSTs are highly aggressive sarcomas that very rarely occur in the face. We know of no other reported cases of a malignant peripheral nerve sheath tumour arising from the upper lip.

Spinal intradural primary malignant peripheral nerve sheath tumors (MPNST) are rare in patients without neurofibromatosis. Here we represent a 3-year-old girl of primary intradural spinal malignant peripheral nerve sheath tumor. The tumor was removed partially and MPNST was diagnosed in the histopathological examination. Her condition deteriorated due to acute hydrocephalus in the following day...

DSS was based on four characteristic imaging features confirmed Study Design. Retrospective diagnostic analysis. Objective. The aim of the study was to establish a new scoring system, the dumbbell scoring system (DSS), for preoperative evaluation of the malignant potential of spinal dumbbell tumors (SDTs). Summary of Background Data. Among SDTs, benign tumors such as schwannomas occur frequentl...