In:
Veterinary Pathology, SAGE Publications, Vol. 34, No. 4 ( 1997-07), p. 346-350
Abstract:
S-100 immunoreactivity was determined 1) in foci of melanocytic hyperplasia, 2) in naturally occurring, ultraviolet radiation-induced, and 9,10-dimethyl-1,2-benzanthracene (DMBA)-induced primary melanomas, and 3) in metastatic melanoma lesions in the South American opossum Monodelphis domestica. Preneoplastic lesions of melanocytic hyperplasia contained scattered cells with S-100-positive nuclei. All primary melanomas, with the exception of a single DMBA-induced tumor, contained cells with S-100-positive nuclei. The pattern of S-100 reactivity in tumors varied from large foci of S-100-positive cells to scattered individual S-100-positive cells. Lymph node metastases were S-100 positive, but metastatic masses in internal organs were usually S-100 negative. Although S-100 reactivity did not distinguish preneoplastic lesions from tumors or benign melanomas from malignant melanomas, identification of metastatic tumor cells clearly demonstrated malignancy.
Type of Medium:
Online Resource
ISSN:
0300-9858
,
1544-2217
DOI:
10.1177/030098589703400411
Language:
English
Publisher:
SAGE Publications
Publication Date:
1997
detail.hit.zdb_id:
2106608-5
SSG:
22
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