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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Argyrophilic carcinoma of the male breast. A neuroendocrine tumor containing predominantly chromogranin B (secretogranin I).

Argyrophilic tumors were diagnosed in 28 of 134 (20.8%) consecutive male patients who had a carcinoma of the breast removed between 1961 and 1990. Histologically, most argyrophilic tumors showed uniform cellularity and prevalent expansive growth. Ultrastructural observation disclosed the presence of electron-dense cored granules in the cytoplasm of the tumor cells. By immunocytochemistry, 17 of 28 argyrophilic tumors (60.7%) contained chromogranin B (secretogranin I)-immunoreactive cells, whereas chromogranin A was present in four of these 17 tumors only (14.2%). Immunoblotting studies showed chromogranin B immunoreactivity similar to that found in normal neuroendocrine cells. Despite these findings, which would argue for a distinct morphologic and immunochemical entity, no statistically significant differences between argyrophilic and common male breast carcinomas were found when a number of clinicopathologic features and relapse-free survival were considered.[1]

References

  1. Argyrophilic carcinoma of the male breast. A neuroendocrine tumor containing predominantly chromogranin B (secretogranin I). Scopsi, L., Andreola, S., Saccozzi, R., Pilotti, S., Boracchi, P., Rosa, P., Conti, A.R., Manzari, A., Huttner, W.B., Rilke, F. Am. J. Surg. Pathol. (1991) [Pubmed]
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