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Invasive Micropapillary Carcinoma of the Breast: MR Imaging Findings
Korean Journal of Radiology ; : 551-558, 2013.
Artigo em Inglês | WPRIM | ID: wpr-174753
ABSTRACT

OBJECTIVE:

To analyze the magnetic resonance (MR) imaging findings of invasive micropapillary carcinoma of the breast. MATERIALS AND

METHODS:

MR images were retrospectively evaluated in 14 patients (age range 37-67, mean age 49 years) with pathologically confirmed invasive micropapillary carcinoma of the breast. The enhancement type (mass/non-mass), shape, margin, contrast enhancement, and time-intensity curve pattern on the dynamic study were correlated with the histopathologic features. Associated findings, such as edema, nipple change, skin change and enlarged axillary lymph nodes were also studied.

RESULTS:

The most common features of the masses were irregular shape (12 of 14 patients, 85.8%) and irregular or spiculated margin (11 of 14 patients, 78.7%). The contrast enhancement was heterogeneous in 11 patients (78.7%), rim enhancement in 2 cases (14.2%), and homogeneous in one patient (7.1%). The predominant kinetic pattern was rapid increase (14 of 14, 100%) in the initial phase and washout (11 of 14, 78.7%) in the delayed phase. Associated non-mass like enhancement was shown in 4 patients, representing ductal carcinoma in situ. MR imaging helped detect additional sites of cancer other than the index lesion in 3 patients (21.4%). Enlarged axillary lymphadenopathy was identified in 7 of the 14 patients (50%).

CONCLUSION:

Invasive micropapillary carcinoma appears as a mass with an irregular shape, irregular or spiculated margin and heterogeneous enhancement on MR imaging. Though these findings are not specific and are also observed with other breast malignancies, invasive micropapillary carcinoma frequently showed multiple lesions, accompanying non-mass enhancement and axillary lymph node enlargement.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Neoplasias da Mama / Imageamento por Ressonância Magnética / Carcinoma Papilar / Reprodutibilidade dos Testes / Estudos Retrospectivos / Diagnóstico Diferencial / Invasividade Neoplásica Tipo de estudo: Estudo diagnóstico / Estudo observacional / Estudo prognóstico Limite: Adulto / Idoso / Feminino / Humanos Idioma: Inglês Revista: Korean Journal of Radiology Ano de publicação: 2013 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Neoplasias da Mama / Imageamento por Ressonância Magnética / Carcinoma Papilar / Reprodutibilidade dos Testes / Estudos Retrospectivos / Diagnóstico Diferencial / Invasividade Neoplásica Tipo de estudo: Estudo diagnóstico / Estudo observacional / Estudo prognóstico Limite: Adulto / Idoso / Feminino / Humanos Idioma: Inglês Revista: Korean Journal of Radiology Ano de publicação: 2013 Tipo de documento: Artigo