A RETROSPECTIVE ANALYSIS OF MUCINOUS CARCINOMA BREAST
Main Article Content
Keywords
mucinous carcinoma, breast cancer, pure mucinous, mixed mucinous, histopathology
Abstract
Mucinous carcinoma of the breast, a rare histological subtype characterized by extracellular mucin production, typically presents in postmenopausal women and carries a more favorable prognosis than invasive ductal carcinoma of no special type.
Objective: To analyze the clinicopathological features of mucinous carcinoma breast cases over a two-year period in a tertiary care setting.
Methods: A retrospective review was conducted on histologically confirmed cases of mucinous carcinoma breast from September 2020 to September 2022. Clinical presentation, tumor subtype, nodal status, treatment, and hormone receptor profile were assessed.
Results: A total of 9 mucinous carcinoma cases were identified. The majority were postmenopausal women, with a mean age of 61.7 years (range 48–76). Pure mucinous carcinoma was diagnosed in 3 patients, while 6 had mixed mucinous carcinoma. Tumor sizes ranged from 2.5 cm to 6.8 cm. Lymph node involvement was seen in 2 cases, both from the mixed subtype. Estrogen receptor positivity was observed in 8 patients, and all tumors were HER2-negative. Surgical treatment included mastectomy in 7 cases and breast-conserving surgery in 2.
Conclusion: Mucinous carcinoma breast, although rare, has a favorable prognosis, especially in pure forms. Distinguishing pure from mixed variants is essential for clinical management due to differences in aggressiveness and nodal involvement..
References
2. Anderson WF, Chu KC, Chang S, Sherman ME. Comparison of age-specific incidence rate patterns for different histopathologic types of breast carcinoma. Cancer Epidemiol Biomarkers Prev. 2004 Jul;13(7):1128-35. PMID: 15247123.
3. Hanagiri T, Ono K, Baba T, So T, Yamasaki M, Nagata Y, Uramoto H, Takenoyama M, Yasumoto K. Clinicopathologic characteristics of mucinous carcinoma of the breast. Int Surg. 2010 Apr-Jun;95(2):126-9. PMID: 20718318.
4. Di Saverio S, Gutierrez J, Avisar E. A retrospective review with long term follow up of 11,400 cases of pure mucinous breast carcinoma. Breast Cancer Res Treat. 2008 Oct;111(3):541-7. doi: 10.1007/s10549-007-9809-z. Epub 2007 Nov 18. PMID: 18026874.
5. Park S, Koo J, Kim JH, Yang WI, Park BW, Lee KS. Clinicopathological characteristics of mucinous carcinoma of the breast in Korea: comparison with invasive ductal carcinoma-not otherwise specified. J Korean Med Sci. 2010 Mar;25(3):361-8. doi: 10.3346/jkms.2010.25 .3.361. Epub 2010 Feb 19. PMID: 20191033; PMCID: PMC2826751.
6. Li CI. Risk of mortality by histologic type of breast cancer in the United States. Horm Cancer. 2010 Jun;1(3):156-65. doi: 10.1007/s12672-010-0016-8. PMID: 21761358; PMCID: PMC 10357995.
7. Barbashina V, Corben AD, Akram M, Vallejo C, Tan LK. Mucinous micropapillary carcinoma of the breast: an aggressive counterpart to conventional pure mucinous tumors. Hum Pathol. 2013 Aug;44(8):1577-85. doi: 10.1016/j.humpath.2013.01.003. Epub 2013 Mar 19. PMID: 23517923.
8. Ranade A, Batra R, Sandhu G, Chitale RA, Balderacchi J. Clinicopathological evaluation of 100 cases of mucinous carcinoma of breast with emphasis on axillary staging and special reference to a micropapillary pattern. J Clin Pathol. 2010 Dec;63(12):1043-7. doi: 10.1136/jcp.2010.082495. Epub 2010 Oct 20. PMID: 20962055.
9. Tse GM, Ma TK, Chu WC, Lam WW, Poon CS, Chan WC. Neuroendocrine differentiation in pure type mammary mucinous carcinoma is associated with favorable histologic and immunohistochemical parameters. Mod Pathol. 2004 May;17(5):568-72. doi: 10.1038/modpathol.3800092. PMID: 15001999.
10. Rasmussen BB, Rose C, Thorpe SM, Andersen KW, Hou-Jensen K. Argyrophilic cells in 202 human mucinous breast carcinomas. Relation to histopathologic and clinical factors. Am J Clin Pathol. 1985 Dec;84(6):737-40. doi: 10.1093/ajcp/84.6.737. PMID: 2416216.
11. Nakagawa T, Sato K, Moriwaki M, Wada R, Arakawa A, Saito M, Kasumi F. Successful endocrine therapy for locally advanced mucinous carcinoma of the breast. Breast J. 2012 Nov-Dec;18(6):632-3. doi: 10.1111/tbj.12031. Epub 2012 Oct 30. PMID: 23110390.
12. Conant EF, Dillon RL, Palazzo J, Ehrlich SM, Feig SA. Imaging findings in mucin-containing carcinomas of the breast: correlation with pathologic features. AJR Am J Roentgenol. 1994 Oct;163(4):821-4. doi: 10.2214/ajr.163.4.8092016. PMID: 8092016.