Primary leptomeningeal melanoma.An ultrastructural study
نویسندگان
چکیده
منابع مشابه
Primary Diffuse Leptomeningeal Gliosarcomatosis
Primary diffuse leptomeningeal gliomatosis (PDLG) is a rare condition with a fatal outcome, characterized by diffuse infiltration of the leptomeninges by neoplastic glial cells without evidence of primary tumor in the brain or spinal cord parenchyma. In particular, PDLG histologically diagnosed as gliosarcoma is extremely rare, with only 2 cases reported to date. We report a case of primary dif...
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vealed elevated protein level of 72 mg/dl and 3 white blood cells with no neoplastic cells, therefore providing no evidence of malignancy or CNS infection. Antiepileptic medications were started, and the patient underwent a right temporal brain and leptomeningeal biopsy. Pathology revealed idiopathic leptomeningeal inflammation and fibrosis without brain involvement. The patient improved clinic...
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Primary intracranial malignant melanoma is a very rare and highly aggressive tumor with poor prognosis. A 66-year-old female patient presented a headache that had been slowly progressing for several months. A large benign pigmented skin lesion was found on her back. A brain MRI showed multiple linear signal changes with branching pattern and strong enhancement in the temporal lobe. The cytologi...
متن کاملPrimary diffuse leptomeningeal gliomatosis.
Dr. André Leite Gonçalves – Division of Child Neurology / Departamento de Neurologia e Neurocirurgia Rua Botucatu 720 – 04023-900 São Paulo SP Brasil. E-mail: [email protected] Glioma arising primarily from the leptomeninges is extremely rare and often diagnosed only in postmortem examination. It is thought to derive from heterotopic nests of neuroglial tissue within the leptomeninges, w...
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PURPOSE Primary adenocarcinoma of the lacrimal gland is a rare malignant tumor of the orbit. Up to now, there has been no presentation of its ultrastructural features. The histopathological findings and fine structures of one case of adenocarcinoma of the lacrimal gland are described in the present work. METHODS The patient was a 59-year-old Japanese man with proptosis that had persisted for ...
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ژورنال
عنوان ژورنال: Cancer
سال: 1978
ISSN: 0008-543X,1097-0142
DOI: 10.1002/1097-0142(197802)41:2<519::aid-cncr2820410219>3.0.co;2-3