Kompozit kolonik adenom-mikrokarsinoid tümör, gerçekten tesadüf mü? Olgu sunumu
Mikst adenonöroendokrin kanserler nadir rastlanan tümörlerdir. Kolonik tübüler adenomlar ile mikrokarsinoid tümörlerin birlikteliği ise literatürde son derece ender bildirilmiştir. Bilindiği üzere, bu tümörlerdeki nöroendokrin bileşen glandüler patern, iğsi hücreli patern, skuamöz-osteoid metaplazi veya pleomorfizm gibi belirgin hitopatolojik değişkenlik gösteren geniş bir yelpaze sergiler. Nadiren çok az farklılaşmış olabilir ve undiferansiye karsinom ya da lenfomaya benzeyebilirler. Bununla beraber, karsinoid veya Zollinger-Ellison gibi birtakım sendromlarla ilişkili karsinoid tümörlerin immünohistokimyasal analizinde, bir amin veya peptit baskın olabileceği gibi çoğunun mültihormonal olduğu gösterilmiştir ve primer tümördeki aminler ve peptidler, üstte bulunan endokrin hücrelerde normal olarak bulunanlarla çoğu zaman eşleşmez. Ayrıca son zamanlarda, neoplastik endokrin ve endokrin dışı epitel hücrelerinin karışımlarını içeren artan sayıda tümör tarif edilmiştir. Dahası, endokrin ve epitel hücresi özelliklerinin aynı hücre içinde gözlendiği farklı tümör türleri de mevcuttur. Bütün bu literatür bilgileri ile benzer olarak, olgumuzda izlenen morfolojik ve immünhistokimyasal bulgular iki neoplastik bileşenin ortak bir öncü hücreden kaynaklandığını göstermektedir.
Compozite colonic adenoma-microcarcinoid tumor, is really a coincidence? Case report
Mixed adenoneuroendocrine cancers are rare tumors. The association of colonic tubulary adenomas with microcarcinoid tumors has been reported very rarely in the literature. As known, the neuroendocrine component in these tumors display a broad spectrum with marked variability in histopathology properties; such as glandular pattern, spindle cell pattern, squamous-osteoid metaplasia or pleomorphism. Rarely, they may be very poorly differentiated and may resemble undifferentiated carcinoma or lymphoma. In addition, immunohistochemical analysis of carcinoid tumors associated with some syndromes such as Zollinger-Ellison and carcinoid has shown that, most are multihormonal as well as one amine or peptide may predominate and the amines and peptides in the primary tumor do not often match to those normally found in the overlying endocrine cells. However, an increasing number of tumors have recently been described including mixtures of neoplastic endocrine and non-endocrine epithelial cells. Furthermore, there are different types of tumors in which endocrine and epithelial cell characteristics are observed in the same cell. Similar to all this literature information, morphological and immunohistochemical findings in our case show that, the two neoplastic components originate from a common precursor cell.
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- 1. Rindi G, Arnold R, Bosman FT, et al. WHO classification of tumours of the digestive system, nomenclature and classification of neuroendocrine neoplasms of the digestive system. International agency for research on cancer, Lyon; 2010: 13–14.
- 2. Lewin K. Carcinoid tumors and the mixed (composite) glandular-endocrine cell carcinomas. Am J Surg Pathol 1987; 11: 71–86.
- 3. Lyda MH, Fenoglio CM. Adenoma-carcinoid tumors of the colon. Arch Pathol Lab Med 1998; 122: 262–265.
- 4. Moyana TN, Qizilbash AH, Murphy F. Composite glandular-carcinoid tumors of the colon and rectum: Report of two case. Am J Surg Pathol 1988; 12: 607-11.
- 5. Vanden IHF, Vanden BLJ, Verhofstad AA, Bosman FT. Neuroendocrine cells in colorectal adenomas. J Pathol 1986; 148: 231–7.
- 6. Bansal M, Fenoglio CM, Robboy SJ, King DW. Are metaplasias in colorectal adenomas truly metaplasias? Am J Pathol 1984; 115: 253–65.
- 7. Vortmeyer AO, Merino MJ, Wang CY, et al. Concordance of genetic alterations in poorly differentiated colorectal neuroendocrine carcinomas and associated adenocarcinomas. J Natl Cancer Inst 1997; 89; 1448-53.
- 8. Zissis D, Zizi SA, Grammatoglou X, et al. Combined carcinoid and mixed (composite) glandular endocrine cell carcinoma of the stomach in atrophic gastritis. 2009 Jan-Mar; 14 (1): 127-30.
- 9. Reinecke P, Borchard F. Pattern of gastric endocrine cells in microcarcinoidosis: An immunohistochemical study of 14 gastric biopsies. Virchows Arch 1996; 428: 237–41.
- 10. Haidar A, Dixon MF. Solitary microcarcinoid in ulcerative colitis. Histopathology 1992; 21: 487–8.
- 11. Matsumoto T, Jo Y, Mibu R, et al. Multiple microcarcinoids in a patient with long standing ulcerative colitis. J Clin Pathol 2003; 56: 963-5.
- 12. Salaria SN, Abu Alfa AK, Alsaigh NY, Montgomery E, Arnold CA. Composite intestinal adenoma-microcarcinoid clues to diagnosing an underrecognised mimic of invasive adenocarcinoma. J Clin Pathol 2013; 66: 302–6.
- 13. Pulitzer M, Xu R, Suriawinata AA, Waye JD, Harpaz N. Microcarcinoids in large intestinal adenomas. Am J Surg Pathol 2006; 30: 1531–6.
- 14. Li Y, Yau A, Schaeffer D, et al. Colorectal glandular-neuroendocrine mixed tumor: Pathologic spectrum and clinical implications. Am J Surg Pathol 2011; 35: 413–25.
- 15. Thosani N, Rao B, Ertan A, Guha S. Wide spectrum of neuroendocrine differentiation in identical appearing colon polyps: A report of 2 mixed endocrine-glandular polyps. Turk J Gastroenterol 2014 Dec; 25: 242-3.
- 16. Lin J, Goldblum JR, Bennett AE, Bronner MP, Liu X. Composite intestinal adenoma-microcarcinoid. Am J Surg Pathol 2012; 36: 292-295.