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A morphological and immunocytochemical study of a distinctive variant of ductal carcinoma in‐situ of the breast
Author(s) -
CRCSS A. S.,
AZZOPARDI J. G.,
KRAUSZ T.,
VAN NOORDEN S.,
POLAK J. M.
Publication year - 1985
Publication title -
histopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.626
H-Index - 124
eISSN - 1365-2559
pISSN - 0309-0167
DOI - 10.1111/j.1365-2559.1985.tb02968.x
Subject(s) - ductal carcinoma , pathology , biology , carcinoma , apocrine , enteroendocrine cell , in situ , immunohistochemistry , endocrine system , neuroendocrine differentiation , stromal cell , hormone , breast cancer , medicine , endocrinology , cancer , chemistry , genetics , organic chemistry , prostate cancer
Because so‐called ‘carcinoid’ tumour of the breast has proven to be a difficult entity to define, we studied in‐situ carcinoma as there were reasons to believe that this might help clarify the complex problems involved. We studied a consecutive series of 30 cases of ductal carcinoma in‐situ (DCIS) by light microscopy and silver impregnation methods and identified a relatively common endocrine variant of DCIS. This variant was studied by immunocytochemical and ultrastructural methods, using conventional DCIS as a control. Endocrine DCIS is identified by its organoid pattern, stromal ‘inclusions’, festooned structure and a distinctive type of polypoid invagination. It is argyrophilic and rich in neuron‐specific enolase. Ultrastructurally it contains abundant dense core granules which are impregnated selectively by Grimelius' method. This tumour type frequently contains peptide hormones of the ACTH family. Three of seven cases contained cells reactive for ACTH and corticotropin‐like intermediate lobe peptide CLIP or their precursor, proopiomelanocortin. A fourth tumour contained neurotensin, recently identified in a variety of endocrine tumours. Argyrophil invasive carcinomas are a much more heterogeneous group of tumours than argyrophil DCIS and only a minority have an endocrine structure comparable to that described here.