Abstract:
:Lymphocytic and plasmocytic infiltration surrounding a malignant tumor probably represents an immunologic response of the host directed against the neoplasm. It has been documented that lymphocytic infiltration has a favorable effect on prognosis in a number of human tumor systems, including cutaneous melanoma. In the present study, 309 consecutive cases of choroidal melanoma were examined for cellular infiltration, and these data were correlated with other histologic parameters and with prognosis. A intense cellular infiltration was found in 15 tumors (4.9%) and a moderate infiltration in 37 (12.0%). Tumors with cellular infiltration were significantly larger and more vascularized than the remaining tumors, which may be related to the accessibility of the immune system to the tumor. There was a higher percentage of poorly differentiated tumors among the tumors with cellular infiltration. However, it does not appear the cellular infiltration favorably influences the prognosis of choroidal melanoma. The 5-year survival rates of patients with like cell types did not depend upon the degree of cellular infiltration demonstrated by the primary tumor. Although choroidal melanomas are capable of inciting an immune response, this response is apparently ineffective in preventing metastatic spread.
journal_name
Cancerjournal_title
Cancerauthors
Lang JR,Davidorf FH,Baba Ndoi
10.1002/1097-0142(197711)40:5<2388::aid-cncr282040subject
Has Abstractpub_date
1977-11-01 00:00:00pages
2388-94issue
5eissn
0008-543Xissn
1097-0142journal_volume
40pub_type
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