Imaging of ancient schwannoma.

Imaging of ancient schwannoma. Research Abstract Details 

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Imaging of ancient schwannoma. Abstract Text:

Kenichi Isobe,Tominaga Shimizu,Tsutomu Akahane,Hiroyuki Kato,

OBJECTIVE: We surveyed the clinical symptoms and radiologic features of ancient schwannoma, a rare variant of schwannoma characterized by degenerative changes. MATERIALS AND METHODS: We present the clinical, radiologic, and pathologic features in seven patients with ancient schwannoma (mean age, 62 years; range, 45-80 years) treated at our department between 1998 and 2003. RESULTS: The most characteristic clinical features were a sign like Tinel's sign and a long interval between the onset of symptoms and surgery (mean interval, 8.3 years). Ancient schwannomas can grow large; the biggest tumor seen in our study was 14 cm long. The highly accurate radiologic assessment made possible with contrast-enhanced MRI and CT scanning showed enhancement at a peridegenerative area and sometimes at a capsule. These findings differ from those of the typical schwannoma and neurofibroma patterns reported to date. Furthermore, bone scintigraphy showed uptake in the tumor, but no accumulation was seen on gallium-67 citrate scintigraphy. CONCLUSION: The characteristic clinical and radiologic findings of ancient schwannoma should make it possible to differentiate it from malignant tumors.

Imaging of ancient schwannoma. Publishing Authors By Initials

K Isobe,T Shimizu,T Akahane,H Kato,

For similar tomography, x-ray computed research abstracts see: tomography, x-ray computed research

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Imaging of ancient schwannoma. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJR. American journal of roentgenology

VOLUME: 183

Page Numbers: 331-6

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ISSN: 0361-803X

DAY: 15

MONTH: Aug

YEAR: 2004

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LANGUAGE: eng

NlmUniqueID: 7708173

Imaging of ancient schwannoma. Keywords Mesh Terms:

KEYWORDS: Tomography, X-Ray Computed

MESH TERMS: radiography

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Grant and Affiliation Information for Imaging of ancient schwannoma.

AFFILIATION: Department of Orthopedic Surgery, Shinshu University, School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan. bechikun@hsp.md.shinshu-u.ac.jp

Country: United States

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MEDLINETA: AJR Am J Roentgenol

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