RESUMEN
Workshops are an important part of the IFPA annual meeting as they allow for discussion of specialized topics. At IFPA meeting 2012 there were twelve themed workshops, five of which are summarized in this report. These workshops related to various aspects of placental biology but collectively covered areas of clinical research and pregnancy disorders: 1) trophoblast deportation; 2) gestational trophoblastic disease; 3) placental insufficiency and fetal growth restriction; 4) trophoblast overinvasion and accreta-related pathologies; 5) placental thrombosis and fibrinolysis.
Asunto(s)
Retardo del Crecimiento Fetal , Fibrinólisis/fisiología , Enfermedad Trofoblástica Gestacional/etiología , Insuficiencia Placentaria , Placentación/fisiología , Trofoblastos/fisiología , Femenino , Retardo del Crecimiento Fetal/etiología , Retardo del Crecimiento Fetal/fisiopatología , Humanos , Intercambio Materno-Fetal/fisiología , Insuficiencia Placentaria/etiología , Insuficiencia Placentaria/fisiopatología , Embarazo , Trombosis/etiología , Trombosis/patología , Trofoblastos/patologíaRESUMEN
AIMS: Squamous cell carcinoma (SCC) is the most common form of malignant transformation in mature cystic teratoma (MCT) of the ovary. Some investigators have suggested the possibility of origin from columnar epithelium. The aim of this study was to analyse such tumours immunohistochemically to elucidate their histogenesis. METHODS AND RESULTS: The expression of cytokeratin (CK) 10 and CK18 was examined in 21 samples of SCC arising in MCT. The expression of CK10 and CK18 was also assessed in SCCs arising in different organs (skin, vulva, lung and uterine cervix) for the purpose of comparison. SCC in MCT expressed CK10 in 7/21 cases [33.3%, 95% confidence interval (CI) 0.12-0.53] and CK18 in 14/21 cases (66.7%, 95% CI 0.46-0.87). SCC in MCT expressed CK10 less frequently, but CK18 more frequently, as is the case in SCCs of the uterine cervix (CK10, 20%; CK18, 70%) and the lung (CK10, 5%; CK18, 90%), both of which are derived from columnar epithelium by squamous metaplasia. CONCLUSIONS: SCC in MCT may be derived from metaplastic squamous epithelium.
Asunto(s)
Carcinoma de Células Escamosas/patología , Queratina-18/metabolismo , Neoplasias Ováricas/patología , Teratoma/patología , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Escamosas/metabolismo , Transformación Celular Neoplásica/metabolismo , Epitelio/metabolismo , Epitelio/patología , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Queratina-10/genética , Queratina-10/metabolismo , Queratina-18/genética , Persona de Mediana Edad , Neoplasias Ováricas/metabolismo , Ovario/metabolismo , Ovario/patología , Teratoma/metabolismoRESUMEN
We recently treated a 21-year-old woman with leiomyomas arising from the bilateral ovaries, a very rare condition. On magnetic resonance imaging, more than half of the left adnexal mass showed low signal intensity on T2-weighted images and good enhancement by gadolinium-DTPA, and the remaining part showed high signal intensity on T2-weighted images, so the lesions initially were diagnosed as ovarian fibromas or as thecomas with a certain degree of degeneration. Pathologic examination of the excised tumors proved that they were bilateral ovarian leiomyomas; in addition, the tumor from the left side showed hemorrhagic and myxoid changes with torsion of 180 degrees.