نتایج جستجو برای: choroidal melanoma
تعداد نتایج: 61480 فیلتر نتایج به سال:
PURPOSE To report the diagnoses of lesions initially misdiagnosed as ocular melanoma. METHODS This retrospective study included all new patients who were referred with a presumptive diagnosis of choroidal melanoma to the ocular oncology clinic at Farabi Eye Hospital from January 2009 to December 2012. Each patient underwent a full ocular examination and B-scan ultrasonography by an ocular onc...
Choroidal melanoma represents the primary intraocular malignancy in adults with a reported incidence of about 4000 cases per year. The liver is the sole site of metastases in more than 80% of cases and is affected in up to 90% of patients who develop metastatic disease. Patients with metastatic melanoma have usually a median survival of 6 months. In the present paper, the case of a 42-year-old ...
Using CM-1 antibody directed against the human p53 protein, high levels of mutant p53 protein expression were found in 12 out of 18 malignant choroidal melanomas. In contrast, we failed to observe elevated p53 expression, indicating the absence of p53 mutation in seven choroidal naevi, a potentially premalignant condition that can progress to form malignant melanoma. For two choroidal melanomas...
OBJECTIVE To report integrative molecular analysis of choroidal melanoma fine-needle aspiration biopsy specimens to identify candidate tumor oncogenes. METHODS Thirty-one choroidal melanoma fine-needle aspiration biopsy specimens were analyzed using cytopathologic diagnosis of melanoma, fluorescence in situ hybridization for chromosome 3, cytogenetic characterization (GeneChip Human 250K NSPI...
A case of bilateral primary choroidal melanoma is described in a 51-year-old white male. Histological confirmation followed enucleation of the left eye and local excision in the right. A careful systemic evaluation failed to demonstrate any other primary or secondary melanomata. This case is the first bilateral primary choroidal melanoma reported in the United Kingdom and the first to be descri...
Eye plaque brachytherapy represents a safe and effective therapeutic approach for choroidal melanoma, combining clinical outcomes with an eye and visual preservation. As it represents a complex procedure, a specific quality assurance program is strongly suggested to improve patients and operators safety, and to reduce possible complications linked to surgical procedure and radiation exposure. T...
The embryologic origins of choroidal and cutanoeus melanocytes, also of the genes involved in cutaneous and choroidal melanoma, are identical, even the two kinds of tumors are different entities. This is a general scientific report, which stretches the molecular mechanisms, as basement of choroidal melanocytes proliferation.
BACKGROUND Melanomas are malignant neoplasm of melanocytic origin, commonly seen on skin and various mucous membranes. Melanomas are the commonest intraocular malignant tumour in the adults. CASE PRESENTATION A 50-year-old female presented with complains of painless progressive swelling in right cheek region of two months duration. Examination revealed a 6 x 4 cm bony hard swelling in right z...
Choroidal melanoma is the most common primary ocular malignant neoplasm among adults. However, innumerable benign and malignant lesions may mimic its ophthalmoscopic features. Moreover, atypical presentations of the tumor may also occur, in some cases making diagnostic elucidation even more difficult and thus increasing the importance of supplementary tests, especially ultrasonographic methods....
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