Tiroiditis de Riedel, una entidad fácilmente confundible con carcinoma anaplásico tiroideo / Riedel's thyroiditis, an entity easily confused with anaplastic thyroid carcinoma

INTRODUCTION: Riedel´s thyroiditis is a thyroid inflammation with invasive fibrosis. CASE REPORT: Female 84 years old, studied by dysphagia to liquids and dysphonia, with cervical mass poorly demarcated and immobile. Computed Tomography (CT) (CT) showed tumor that diverted the trachea and esophagus compressed. Fine Needle Aspiration (FNA) obtained cells with atypia. Thyroidectomy was performed, appreciating a stony tumor which included the right recurrent laryngeal nerve. Given the high suspicion of thyroid malignancy tracheostomy it was performed. The pathology report as fibrosing Riedel thyroiditis. DISCUSSION: This is the less common type of chronic thyroiditis. Etiology is unknown. The normal thyroid parenchyma is replaced by fibrous connective tissue. Clinically usually a hard mass, fast growing, why is confused with thyroid carcinoma and Hashimoto's thyroiditis. It´ss more common in women and is usually bilateral. The CT or MRI (Magnetic Resonance Imaging) help assess the extent. Puncturing the mass could give us the diagnosis but is often difficult. Treatment to relieve symptoms or rule out malignancy is surgery. The prognosis is usually good. CONCLUSIONS: Riedel´s thyroiditis is an entity with histopathologic diagnosis essential

Angiosarcoma primario de mama y carcinoma papilar de tiroides sincrónico: presentación de un caso / Primary angiosarcoma of breast and synchronous thyroid papillary carcinoma: a case report

Antecedentes: El angiosarcoma primario de mama constituye un tumor infrecuente que se desarrolla de forma predominante en mujeres en la tercera y cuarta décadas de la vida. Los nódulos tiroideos incidentales son aquellos que se objetivan en pruebas de imagen realizadas por otra causa y se observan en menos de un 10 por ciento con la tomografía por emisión de positrones (PET). Objetivo: Presentar el caso excepcional de una paciente con angiosarcoma primario de mama y un carcinoma papilar de tiroides sincrónicos. Caso clínico: Mujer de 34 años con angiosarcoma primario en la mama derecha sometida a mastectomía simple. En el estudio de extensión se halló un incidentaloma tiroideo derecho compatible con carcinoma papilar que requirió tiroidectomía total y linfadenectomía del compartimento central cervical en un segundo tiempo. Comentarlo: Los angiosarcomas primarios suponen menos del 0,05 por ciento de todos los tumores primarios malignos de la mama. El diagnóstico definitivo de estos tumores viene definido por el estudio anatomopatológico, que establece tres grados: alto, bajo e intermedio, los cuales se relacionan de forma directa con la supervivencia. La prevalencia de los incidentalomas malignos tiroideos objetivados por PET varía del 14-30,9 por ciento, según diferentes estudios. La planificación del tratamiento quirúrgico de las neoplasias incidentales tiroideas en pacientes con otro tumor primario debe analizarse de forma individualizada, según la supervivencia esperada del tumor primario.

Background: The primary angiosarcoma of breast is a rare tumor that develops predominantly in women in the third and fourth decades of life. Incidental thyroid nodules are observed in imaging tests performed for other reasons and it's observed in less than 10 percent with the positron emission tomography (PET). Aims: To report the exceptional case of a patient with primary angiosarcoma of the breast and synchronous thyroid papillary carcinoma. Clinical case: Female patient 34 year old with primary angiosarcoma in the right breast, submitted to a simple mastectomy. In the extension study we found an incidental thyroid papillary carcinoma that required a total thyroidectomy and central cervical lymphadenectomy in a second time. Comments: The primary angiosarcoma are less than 0.05 percent of all primary malignant tumors of the breast. The definitive diagnosis is determined by the pathology, which defines three grades: high, low and intermediate, which relate directly to survival. Prevalence of malignant thyroid incidentalomas observed by PET varies from 14 to 30.9 percent, according different studies. Planning the surgical treatment of incidental thyroid malignancies in patients with other primary tumor should be analyzed individually, according the expected survival of the primary tumor.