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Malignant Triton Tumor in the Abdominal Wall: A Case Report

Author(s): Yoshiyuki Kitamura | Koichiro Abe | Shingo Baba | Takuro Isoda | Yasuhiro Maruoka | Yoshio Matsuo | Yuichiro Kubo | Akio Sakamoto | Hiroshi Nishimura | Masayuki Sasaki | Hiroshi Honda

Journal: Advances in Molecular Imaging
ISSN 2161-6728

Volume: 03;
Issue: 02;
Start page: 9;
Date: 2013;
Original page

Keywords: Malignant Triton Tumor (MTT) | Malignant Peripheral Nerve Sheath Tumor (MPNST) | 2-[F-18]-Fluoro-2-Deoxy-D-Glucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT)

  Malignant triton tumor (MTT) is a rare variant of malignant peripheral nerve sheath tumor (MPNST) with rhabdomyosarcomatous differentiation. We report the case of a 54-year-old male without a history of neurofibromatosis type 1 (NF1) who had a growing abdominal wall tumor diagnosed as MTT. Computed tomography (CT), magnetic resonance imaging (MRI) and 2-[F-18]-fluoro-2-deoxy-D-glucose positron emission tomography/CT (FDG-PET/CT) were performed. The MRI and FDG-PET/CT indicated that the lateral component of the tumor was composed of many proliferative cells, corresponding to the histopathological finding of a cellular proliferation of spindle-shaped cells. In light of this case and previous reports, it is apparent that FDG-PET/CT is a helpful tool for distinguishing MTT from benign peripheral nerve sheath tumor.

Tango Jona
Tangokurs Rapperswil-Jona

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