Mucinous breast carcinoma a rare entity to be known: clinico-pathological study of 48 cases

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Published Jan 17, 2017
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Vol. 94 No. 8 (2016): Issue Aug 2016

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Olfa El Amine El Hadj
Malek Ayadi
Aida Goucha
Jameleddine Ben Hassouna
Khaled Rahal
Ahmed El may
Amor Gamoudi

Abstract

Abstract:   
Background: Mucinous carcinoma is a particular type of breast cancer characterized by the presence of extracellular mucin and is linked with a more favorable prognosis than invasive breast carcinoma of no special type. It accounts for 1 to 7% of all breast cancers. We propose in this work to study at first the clinic-pathological characteristics and the evolution of 48 cases of mucinous carcinomas. Secondly, we propose to identify through a review of recent literature, the therapeutic management of these carcinomas.
Methods: This is a retrospective study, conducted in Salah Azaiez carcinological institute, interesting 48 cases of mucinous carcinoma collected over 19 years. Clinical, radiological and pathological information were collected from medical records.
Results: The mean age of our patients was 57 years. The tumor was single in 41 cases and in 7 cases bifocal. Mammographic aspects were favor of malignancy in 33 cases (75%). It was mixed subtype in 14 cases and pure in 34 cases. Lymph node involvement was noted in 14 cases. The number of metastatic lymph nodes ranged from 1 to 11 with an average of 3. Hormone receptors were positive in 35 tumors (73%). The HER2 showed overexpression in 5 cases. Surgery consisted of a radical treatment for thirty-two patients (66%). Overall survival at 5 years was 75.3% and 59.3% at 10 years. Disease-free survival was 74% at 5 years and 58% at 10 years.
CONCLUSION: Mucinous carcinoma consists of two distinct subtypes: pure and mixed with different prognosis. Larger data samples with longer follow-up are necessary to achieve an improved understanding of this particular tumor.

Keywords:

Breast, carcinoma, mucinous

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