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Updated: Jun 8, 2026
Translational Orthotopic Models of Glioblastoma Multiforme
Published on: February 17, 2023
Glioblastoma with melanotic differentiation
1Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India. sushilapath@yahoo.com
Abstract:
A 54-year-old male presented with the history of headache and vomiting. MRI of the head showed right posterior temporal mass which was surgically excised. Histopathological examination revealed features of glioblastoma with pigmented cells. The pigment was demonstrated to be melanin which was confirmed by special stains and immunohistochemistry. This is the first description of glioblastoma with melanotic differentiation reported in the literature. The relevant literature is briefly reviewed.
Insights
This study reports the first case of glioblastoma with melanotic differentiation, a rare brain tumor containing melanin pigment. Further research is needed to understand this unique glioblastoma variant.
Area of Science:
- Neuro-oncology
- Surgical Pathology
- Cancer Research
Background:
- Glioblastoma is an aggressive primary brain tumor.
- Melanotic differentiation is rare in gliomas.
Observation:
- A 54-year-old male presented with headache and vomiting.
- MRI revealed a right posterior temporal mass.
- Surgical excision was performed.
Findings:
- Histopathology showed glioblastoma with pigmented cells.
- Special stains and immunohistochemistry confirmed melanin pigment.
- This represents the first reported case of glioblastoma with melanotic differentiation.
Implications:
- This finding expands the known spectrum of glioblastoma morphology.
- Further studies are warranted to investigate the biological basis and clinical behavior of melanotic glioblastoma.
- This case highlights the importance of comprehensive histopathological evaluation for rare tumor variants.
