RENATO AUGUSTO EIDY KIOTA MATSUMOTO

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  • article 10 Citação(ões) na Scopus
    Sarcomas of the breast: findings on mammography, ultrasound, and magnetic resonance imaging
    (2018) MATSUMOTO, Renato Augusto Eidy Kiota; HSIEH, Su Jin Kim; CHALA, Luciano Fernandes; MELLO, Giselle Guedes Netto de; BARROS, Nestor de
    Abstract Sarcomas of the breast belong to a heterogeneous group of breast tumors of mesenchymal origin, without epithelial components. These tumors can be primary or secondary (after previous treatment for breast cancer), are rare, present aggressive behavior, and have a poor prognosis. They occur mainly in women between 45 and 50 years of age, with the exception of angiosarcomas, which can occur in younger patients. Clinically, breast sarcomas manifest as palpable, mobile, rapidly growing masses, without skin thickening, axillary lymphadenopathy, or nipple discharge. Although the imaging findings are non specific, they can be suggestive of sarcoma. For instance, a solitary mass showing rapid growth, with circumscribed or indistinct margins and, a complex (solid-cystic) or heterogeneous echotexture, without axillary lymph node involvement, can raise the suspicion of sarcoma. The treatment is not well established, because of the rarity and heterogeneity of this type of neoplasm. The principles of treatment for sarcoma of the breast have been addressed only in small cohort studies. In most cases, the treatment of choice is surgery without axillary lymphadenectomy.
  • article 1 Citação(ões) na Scopus
    Encapsulated Papillary Breast Carcinoma: Anatomopathological and Clinicoradiological Aspects
    (2018) MATSUMOTO, R. A. E. K.; BRESCIANI, B. H.; THOMPSON, B. M.; BARROS, N. de
    Encapsulated papillary carcinoma or intracystic papillary carcinoma of the breast is a rare tumour and is a special subtype of carcinoma. The most relevant histological characteristic is the absence of a myoepithelial cell layer. The lack of such a layer leads to uncertainty in diagnosis and consequent management, depending on whether the tumour is considered an invasive neoplasm or an in-situ neoplasm. This article illustrates the histological characteristics of this subtype of breast cancer, its most common imaging presentation, clinical findings, diagnosis, and treatment.