melanin/braken

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Prochlorperazine interaction with melanin and melanocytes.

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Prochlorperazine is a phenothiazine-class antipsychotic drug usually used to treat nausea, vomiting and schizophrenia. Phenothiazine derivatives have been known to cause serious side effects, like extrapyramidal symptoms, but also skin disorders which mechanism has not been fully established. The

Glioblastoma with melanotic differentiation.

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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

Amelanotic malignant melanoma of the esophagus: report of two cases with immunohistochemical and molecular genetic study of KIT and PDGFRA.

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The author reports herein two cases of amelanotic malignant melanoma of the esophagus. Case 1 is an 87-year-old woman who was admitted to our hospital because of nausea and vomiting. Endoscopic examination revealed an ulcerated tumor of the distal esophagus, and a biopsy was taken. The biopsy showed

Unusual tonsillar herniation in meningeal melanocytoma: a case report.

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Meningeal melanocytoma is a primary melanocytic neoplasm with certain MR and immunohistochemical characteristics worthy to note. In a 38-year-old man with a complaint of headache for a couple of years and recently added nausea, vomiting, diplopia, progressive visual blurring and hearing loss,

Large cell/anaplastic medulloblastoma with myogenic, melanotic and neuronal differentiation: a case report of a rare tumor.

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Medulloblastoma is an embryonal neuroepithelial tumor of the cerebellum and is the most common malignant central nervous system tumor in children. Different histological variants and patterns have been described. The classic variant represents the majority of cases. This report describes a rare case

Intussusception of the small bowel due to Peutz-Jeghers syndrome: a case report.

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The Peutz-Jeghers syndrome is an autosomal dominant disorder characterized by hamartomatous polyposis of the gastrointestinal tract, melanin pigmentation of the skin and mucous membranes, and an increased risk for cancer. The incidence of surgical complications in these patients is relatively rare,

Neurocutaneous melanosis with hydrocephalus: report of one case.

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Neurocutaneous melanosis (NCM) is a rare nonfamilial syndrome and characterized by large or numerous congenital melanocytic nevi and excessive proliferation of melanin-containing cells in the leptomeninges. It is believed to be an embryonic neuroectodermal dysplasia. Patients with NCM may develop

Peutz-Jeghers syndrome associated with intestinal intussusception: a case report.

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A 12-year-old boy visited our hospital with complaints of severe upper abdominal pain and vomiting. Marked tenderness was present in the upper abdomen, and a movable hard tumor the size of a fist was felt there. Because abdominal computed tomography scans revealed invagination, an emergency

Pediatric primary diffuse leptomeningeal melanomatosis: Case report and review of the literature.

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Primary melanocytic tumors of central nerve system (CNS) are rare, primary diffuse leptomeningeal melanomatosis (PDLM), a subtype of malignant melanomas of CNS, is extremely rare,especially in pediatrics. As the clinical manifestation of PDLM is not characteristic, It is often

Innovative approaches for the development of antidepressant drugs: current and future strategies.

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Depression is a highly debilitating disorder that has been estimated to affect up to 21% of the world population. Despite the advances in the treatment of depression with selective serotonin reuptake inhibitors (SSRIs) and serotonin and norepinephrine reuptake inhibitors (SNRIs), there continue to

Primary colonic melanoma presenting as ileocecal intussusception: case report and literature review.

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Primary malignant melanoma originating in the colon is an extremely rare disease. Herein, we report a case of primary melanoma of the ascending colon. The patient was a 57-year-old male who was admitted to our hospital for persistent abdominal pain and episodes of bloody stool, nausea and vomiting.

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