Mucinous carcinoma of the breast: A case report and comprehensive literature review

Medical Reports Pub Date : 2025-08-19 DOI:10.1016/j.hmedic.2025.100346

A. Khallaf , M. Oussafi , H. Ouazzani , I. Chaouche , A. Akammar , N. EL Bouardi , B. Alami , MY. Alaoui Lamrani , M. Maaroufi , M. Boubbou

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Abstract

Background

Mucinous carcinoma is a rare histologic subtype of breast cancer, accounting for 1–4 % of all cases. It predominantly affects older women and generally presents a favorable prognosis compared to other invasive breast cancers.

Case summary

We report the case of a 54-year-old woman presenting with a slowly enlarging right breast mass. Clinical and imaging examinations revealed a lobulated lesion in the lower outer quadrant of the right breast. Core needle biopsy confirmed the diagnosis of grade II mucinous carcinoma. The patient underwent mastectomy with sentinel lymph node biopsy, which was negative for metastasis. Histopathological examination confirmed a pure mucinous carcinoma. Postoperatively, the patient was referred for adjuvant radiotherapy.

Conclusion

This case highlights the importance of correlating imaging and histological features to ensure timely diagnosis of mucinous carcinoma and underscores its generally favorable outcome when appropriately managed.

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乳腺黏液性癌1例报告及文献复习

背景：黏液癌是一种罕见的乳腺癌组织学亚型，占所有病例的1-4 %。它主要影响老年妇女，与其他浸润性乳腺癌相比，通常预后良好。我们报告一例54岁的女性，表现为右乳房缓慢增大的肿块。临床及影像学检查显示右乳房下外侧有分叶状病变。核心穿刺活检证实II级粘液癌的诊断。患者行乳房切除术并前哨淋巴结活检，未发现转移。组织病理学检查证实为纯粹黏液性癌。术后患者行辅助放疗。结论本病例强调了将影像学和组织学特征相结合以确保及时诊断黏液癌的重要性，并强调了在适当处理下其通常良好的预后。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Medical Reports

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