Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0025202 (melanoma)
 69,561 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A system of rapid surveillance for cancer in the population of Los Angeles County was studied, and the methodology was compared with traditional population-based registries. Comparisons with the Third National Cancer Survey were also made, and the pattern of malignant melanoma occurrence in Los Angeles residents was described.
Natl Cancer Inst Monogr 1977 Dec
PMID:Cancer surveillance program in Los Angeles County. 61 53

Three patients had suspected choroidal melanoma and positive results for radioactive phosphorus (32P) uptake tests, leading to enuclearion in two of the patients. No malignancy was present on histopathologic examination. This experience reemphasizes the need for the ophthalmologist to evaluate the total clinical picture and not to give inappropriate consideration to a "positive" 32P uptake test in deciding for or against enucleation in a suspected choroidal melanoma. The positive 32P uptake test, even with high values, cannot be equated with malignancy, and a variety of nonmalignant lesions may give false-positive results.
Arch Ophthalmol 1978 Dec
PMID:False-positive 32P uptake tests. 71 16

A 57-year-old woman complaining of decreased vision for six months had a mass expanding the choroid inferonasally in the right eye. Clinical examination, ultrasonography, and fluorescein angiography were consistent with a malignant melanoma. The eye was enucleated and pathologic studies showed an adenocarcinoma of the retinal pigment epithelium (RPE). Malignant tumors of the RPE may simulate exactly choroidal melanomas clinically, but apparently have a much better prognosis, in that very few cases have been documented to produce metastatic disease. The vast majority of cases studied histopathologically, in which a diagnosis of adenocarcinoma of the RPE has been made, are low-grade malignant neoplasms with the absence of invasion beyond the choroid or lamina cribrosa at the time of enucleation.
Arch Ophthalmol 1978 Dec
PMID:Adenocarcinoma of the retinal pigment epithelium. 71 17

The resistance of a human melanoma cell line (MM96) to both ultraviolet and ionizing irradiation was compared by two different methods of cloning, on plates and in agar. A high level of resistance to both ultraviolet (D0 = 320 ergs/sq mm) and ionizing irradiation (D0 = 4300 rads) was observed when viability of cells was determined by cloning in agar. In contrast, melanoma cells were found to be as sensitive as were other cells when viability after irradiation was determined by cloning on plastic plates. The difference in sensitivity to radiation between the two methods of cloning can be explained in a model involving damage to membranes as well as to DNA. At least for ionizing radiation, this effect is not restricted to melanoma cells since a HeLa subline, HeLa-QB1, showed a similar response. In contrast, a human lymphoblastoid line (JHP) cloned in agar was sensitive under these conditions (D0 = 120 rads).
Cancer Res 1978 Dec
PMID:Dependence on cloning method of survival of human melanoma cells after ultraviolet and ionizing radiation. 71 46

One hundred and eight ultrasonographic examinations of the abdomen and pelvis in 89 patients with malignant melanoma were reviewed. Forty of these patients were found to have metastatic disease demonstrated by this new diagnostic modality. The varied ultrasonographic manifestations of melanoma are illustrated. Its use in staging and evaluating therapy is stressed.
Cancer 1978 Dec
PMID:Gray scale ultrasonography in the evaluation of metastatic melanoma. 72 59

Twenty-two patients with cutaneous metastases of malignant melanoma were treated with intralesional injections of the methanol extraction residue of bacillus Calmette-Guerin (MER). The local reaction consisted of erythema and pustule formation followed by ulceration and tumor necrosis. Side effects included fever, chills, headache and malaise in the majority of patients; nausea, vomiting, cyanosis and hypotension occurred infrequently. Hypersensitivity reactions were not observed. Temporary abnormalities in liver function were seen in 11 of 19 patients tested. Reversible lymphopenia and thrombocytopenia developed in 7 of 17 and 7 of 18 patients, respectively. Immune function, as measured by skin tests for delayed hypersensitivity and the in vitro response of isolated lymphocytes to mitogens and microbial antigens, was not influenced by treatment with MER. Transient increases were observed in total hemolytic complement, complement components and the reduction of nitroblue-tetrazolium by neutrophils. Eight of eighteen evaluable patients showed a complete disappearance of all injected lesions. We conclude that intratumoral injection of MER is effective treatment for cutaneous metastases of malignant melanoma, with a complete response rate comparable to that observed after intralesional injection of BCG.
Cancer 1978 Dec
PMID:Intralesional injection of the methanol extraction residue of Bacillus Calmette-Guerin (MER) into cutaneous metastases of malignant melanoma. 72 66

A multifactorial analysis was used to identify the dominant prognostic variables affecting survival from a computerized data base of 339 melanoma patients treated at this institution during the past 17 years. Five of the 13 parameters examined simultaneously were found to independently influence five year survival rates: 1) pathological stage (I vs II, p = 0.0014), 2) lesion ulceration (present vs absent, p = 0.006), 3) surgical treatment (wide excision vs wide excision plus lymphadenectomy, p = 0.024), 4) melanoma thickness (p = 0.032), and 5) location (upper extremity vs lower extremity vs trunk vs head and neck, p = 0.038). Additional factors considered that had either indirect or no influence on survival rates were clinical stage of disease, age, sex, level of invasion, pigmentation, lymphocyte infiltration, growth pattern, and regression. Most of these latter variables derived their prognostic value from correlation with melanoma thickness, except sex which correlated with location (extremity lesions were more frequent on females, trunk lesions on males). This statistical analysis enabled us to derive a mathematical equation for predicting an individual patient's probability of five year survival. Three categories of risk were delineated by measuring tumor thickness (Breslow microstaging) in Stage I patients: 1) thin melanomas (<0.76 mm) were associated with localized disease and a 100% cure rate: 2) intermediate thickness melanomas (0.76-4.00 mm) had an increasing risk (up to 80%) of harboring regional and/or distant metastases and 3) thick melanomas (>/=4.00 mm) had a 80% risk of occult distant metastases at the time of initial presentation. The level of invasion (Clark's microstaging) correlated with survival, but was less predictive than measuring tumor thickness. Within each of Clark's Level II, III and IV groups, there were gradations of thickness with statistically different survival rates. Both microstaging methods (Breslow and Clark) were less predictive factors in patients with lymph node or distant metastases. Clinical trials evaluating alternative surgical treatments or adjunctive therapy modalities for melanoma patients should incorporate these parameters into their assessment, especially in Stage I (localized) disease where tumor thickness and the anatomical site of the primary melanoma are dominant prognostic factors.
Ann Surg 1978 Dec
PMID:A multifactorial analysis of melanoma: prognostic histopathological features comparing Clark's and Breslow's staging methods. 73 51

In conclusion, cutaneous malignant melanoma, regardless of site, is best managed by early recognition and appropriate conservative surgical treatment. Depth of tumor invasion at the time of definitive surgical intervention is the most accurate measure of prognosis. Radical surgical measures for deeply invasive high-risk primary lesions have yet to be proven effective in altering prognosis, and the patient's quality of life should be considered when such procedures are contemplated.
Clin Obstet Gynecol 1978 Dec
PMID:Cutaneous and vulvar melanoma: an update. 73 22

From 1975 to 1977 42 patients with advanced solid tumours were treated with imidazole-carboxamide (DTIC). It was applied in 18 cases as monotherapy: in the remaining patients it was administered in combination with other cytostatic agents. Tumour remission was recorded in 4/22 patients with melanoma, 2/2 with Kaposi sarcoma and 2/7 with soft tissue sarcoma. No change in tumour behaviour was recorded in 6/22 melanomas, 2/7 soft tissue sarcomas, 1/7 head and neck tumours and 1/1 thymoma. Side effects of DTIC monotherapy were comparably low. The optimum dosage and frequency of DTIC therapy have not yet been established. Combinations with other cytostatic agents are still being tested.
Wien Klin Wochenschr 1978 Dec 22
PMID:[DTIC in the therapy of solid tumours (author's transl)]. 74 53

The influence of anaesthetics on the in vivo response of B16 melanoma to melphalan was studied using an in vitro cell-survival assay. Three anaesthetics were used, Saffan (Althesin) Sagatal (Nembutal) and Hypnorm. When Saffan was administered to tumour-bearing animals before melphalan there was a significant increase in tumour-cell kill. This effect was not observed with Sagatal or Hypnorm. Maximum increase in tumour-cell kill was achieved when Saffan was administered about 1 h before melphalan, and was dependent on Saffan dose. Clonogenic tumour-cell repopulation after melphalan was rapid (TD - 1 day) and the rate was similar from 2 levels of cell kill. When Saffan was combined with melphalan the repopulation rate was the same as with melphalan alone, and the increased cell kill was reflected in increased growth delay. The in vitro response of B16 melanoma cells to melphalan was unaltered by pretreatment with, or simultaneous exposure to Saffan. The results suggest that the mechanism of the enhanced cell kill in vivo is probably due to an indirect systemic effect, rather than a direct effect on the tumour cells.
Br J Cancer 1978 Dec
PMID:Influence of anaesthetics on tumour-cell kill and repopulation in B16 melanoma treated with melphalan. 74 90


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>