Melanotic Schwannomas Are Rarely Seen Pigmented Tumors with Unpredictable Prognosis and Challenging Diagnosis
Joint Authors
Diniz, Gulden
Oztekin, Ozgur
Keskin, Elif
Ekmekci, Sumeyye
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-10-03
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
Melanotic Schwannoma (MS) is rarely seen and potentially malignant neoplasm that is categorized as a variant of Schwannoma.
MS most frequently involves intracranial structures followed by posterior nerve roots in the spinal canal.
Approximately 50% of the cases with MS have psammomatous calcifications and this type of MS is related to Carney complex with autosomal dominant inheritance.
Most cases of MS are benign, though 10% of them are malignant with metastatic potential.
MS mimics melanoma and the differential diagnosis should be made excluding other melanin producing neoplasms especially melanoma.
Case 1.
A 42-year-old hypertensive male presented for checkup.
He had a well-defined extraspinal oval lesion measuring 3.5 × 2.5 cm near right adrenal.
Case 2.
A 22-year-old female presented with neurofibromatosis-2, bilateral acoustic schwannomas and café au lait lesions on sacrococcygeal region.
She had an intradural extramedullary lesion measuring 6.1 × 2.0 cm at L1-2 level.
MS is a rare neoplasm composed of Schwann cells and melanin pigment.
These tumors are usually benign but they may become aggressive.
The biologic behavior of MS is difficult to predict; the patients have to be followed up for a longer period due to its malignant potential.
American Psychological Association (APA)
Keskin, Elif& Ekmekci, Sumeyye& Oztekin, Ozgur& Diniz, Gulden. 2017. Melanotic Schwannomas Are Rarely Seen Pigmented Tumors with Unpredictable Prognosis and Challenging Diagnosis. Case Reports in Pathology،Vol. 2017, no. 2017, pp.1-4.
https://search.emarefa.net/detail/BIM-1148840
Modern Language Association (MLA)
Keskin, Elif…[et al.]. Melanotic Schwannomas Are Rarely Seen Pigmented Tumors with Unpredictable Prognosis and Challenging Diagnosis. Case Reports in Pathology No. 2017 (2017), pp.1-4.
https://search.emarefa.net/detail/BIM-1148840
American Medical Association (AMA)
Keskin, Elif& Ekmekci, Sumeyye& Oztekin, Ozgur& Diniz, Gulden. Melanotic Schwannomas Are Rarely Seen Pigmented Tumors with Unpredictable Prognosis and Challenging Diagnosis. Case Reports in Pathology. 2017. Vol. 2017, no. 2017, pp.1-4.
https://search.emarefa.net/detail/BIM-1148840
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1148840