- A malignant neoplasm of epithelial cells in glandular or glandlike pattern. SYN: glandular cancer, glandular carcinoma.- acinic cell a. an a. arising from secreting cells of a racemose gland, particularly the salivary glands. SYN: acinar carcinoma, acinic cell carcinoma.- a. in Barrett esophagus an a. arising in the esophagus that has become lined with columnar cells (Barrett mucosa).- clear cell a. 1. a histologic type of renal a.; 2. a histologic type of a. occurring chiefly in the male and female genitourinary tracts that is characterized by distinctive hobnail cell growth of neoplastic cells in sheets, papillae, and coalescing glands.- mucoid a. sometimes applied to mucinous carcinoma, or a. containing mucin secreting neoplastic cells.- papillary a. an a. containing fingerlike processes of vascular connective tissue covered by neoplastic epithelium, projecting into cysts or the cavity of glands or follicles; occurs most frequently in the ovary and thyroid gland.- renal a. an a. arising in the renal parenchyma, usually occurring in middle-aged or older people of either sex (although more common in males). SYN: clear cell carcinoma of kidney, renal cell carcinoma.- a. in situ a noninvasive abnormal proliferation of glands believed to precede the appearance of invasive a.; reported in the endometrium, breast, large intestine, cervix, and other sites.
* * *ad·e·no·car·ci·no·ma -.kärs-ən-'ō-mə n, pl -mas also -ma·ta -mət-ə a malignant tumor originating in glandular epitheliumad·e·no·car·ci·no·ma·tous -mət-əs adj
* * *n.a malignant epithelial tumour arising from glandular structures, which are constituent parts of most organs of the body. The term is also applied to tumours showing a glandular growth pattern. These tumours may be subclassified according to the substances that they produce, for example mucus-secreting and serous adenocarcinomas, or to the microscopic arrangement of their cells into patterns, for example papillary and follicular adenocarcinomas. They may be solid or cystic (cystadenocarcinomas).
* * *ad·e·no·car·ci·no·ma (ad″ə-no-kahr″sĭ-noґmə) carcinoma derived from glandular tissue or in which the tumor cells form recognizable glandular structures; adenocarcinomas may be classified according to the predominant pattern of cell arrangement, as papillary, alveolar, etc., or according to a particular product of the cells, as mucinous adenocarcinoma.
Medical dictionary. 2011.