Hydatidiform mole in ectopic pregnancy: clinical, imaging, pathological and immunohistochemical characteristics.

OBJECTIVE: To determine the clinical, pathological, immunohistochemical and imaging characteristics of hydatidiform mole in ectopic pregnancy (HMEP) in all the cases admitted to the Department of Obstetrics and Gynecology, University Hospital of Caracas (HUC), Central University of Venezuela. STUDY DESIGN: Retrospective and comparative study, based on clinical records review of 2 groups: 10 cases with a diagnosis of HMEP and 20 cases with intrauterine hydatidiform mole (IUHM) admitted to the Obstetrics and Gynecology Department of HUC from 1996 to 2010. Clinical, pathological, immunohistochemical and imaging features were analyzed. RESULTS: The prevalence of HMEP in this study was 0.14:1,000 pregnancies; in this group the mean age was 28.8 years, and the mean gestational age at admission was 8.6 weeks. Both groups (HMEP and IUHM) were comparable in these last variables. Abdominal pain and genital bleeding were the most common clinical symptoms in the HMEP group, while it was vaginal bleeding in the IUHM group. Ultrasound findings were similar to those traditionally described in nonmolar ectopic pregnancy. Histology and immunohistochemistry showed that all cases of HMEP were partial mole. CONCLUSION: Although in this study the prevalence of HMEP was high, the size of the sample limits definitive conclusions. This study concludes that all cases of HMEP are partial mole.

Human papillomavirus in invasive cervical cancer and cervical intraepithelial neoplasia 2 and 3 in Venezuela: a cross-sectional study.

BACKGROUND: This study investigated the distribution of human papillomavirus (HPV) types in invasive cervical cancer (ICC), cervical intraepithelial neoplasia 2 (CIN2) and cervical intraepithelial neoplasia 3 (CIN3) in Venezuela. METHODS: Paraffin-embedded samples from 329 women from 29 medical centers of the 24 states of Venezuela were analyzed to determine the distribution of HPV types for ICC, CIN2, and CIN3, the prevalence of single and multiple infection, and the association of HPV types with severity of lesion, comparing CIN2 versus CIN3+ (CIN3 and ICC). The samples were analyzed with the polymerase chain reaction (PCR) followed by reverse hybridization for the identification of HPV types. RESULTS: HPV was identified in 95/96 ICC specimens (98.9%), in 142/149 CIN3 (95.3%) and in 78/84 CIN2 samples (92.8%). The most common types for ICC and CIN3 were: HPV16, 18, 31, and 33, and for CIN2 were HPV16, 31, 51, 52, and 18. HPV single infection was found in 82.1% of ICC cases, in 79.4% of CIN2 cases, and in 77.4% of CIN3 cases. HPV16 was identified as a single infection more frequently in women with CIN3+ than in those with CIN2 (68.6% versus 46.7%, P=0.002), and HPV16 or HPV18 types were more prevalent in CIN3+ than in CIN2 (73.4% versus 50%, P=0.0006). CONCLUSION: this is the first study of the distribution of HPV types in ICC, CIN2, and CIN3 conducted throughout the territory of Venezuela. HPV16 and HPV18 were the most frequent HPV types identified in single and multiple infections in both ICC and CIN3 groups, and are associated with severity of lesion. The knowledge of the distribution of HPV types would allow organization of an HPV-DNA-based screening test, and consideration of the implementation of prophylactic vaccination in Venezuela.

Utility of p57 protein(KIP2) in molar disease to determine its androgenetic origin.

OBJECTIVE: To determine, qualitatively and semiquantitatively, the expression of p57 protein in different trophoblastic cell populations of hydatidiform mole and anembryonic pregnancy. STUDY DESIGN: We performed an observational study of the histopathologic and immunohistochemical findings of 48 cases of hydatidiform mole and 2 anembryonic pregnancies. The histologic samples stained with hematoxylin-eosin were reviewed blindly by 3 pathologists to establish a diagnosis and compare it to the previous one. Afterward, immunohistochemical staining was performed using a polyclonal antibody on paraffin-embedded, formalin-fixed tissue sections. The nuclear staining was assessed in 5 cell types: villous mesenchyme, cytotrophoblast, syncytiotrophoblast, intervillous trophoblast and decidua. RESULTS: The degree of agreement between the previous histologic diagnosis and the current one was excellent (kappa = 0.702). The sensitivity was 82.6% for complete and 84% for partial mole. On immunohistochemical analysis, the degree of agreement was low (kappa = 0.2). The sensitivity was 53.9% for complete mole and 59.1% for partial mole. The cell population with the least expression for p57 was the cytotrophoblast. The results for anembryonic pregnancies remained the same. CONCLUSION: Immunohistochemistry with p57 is a useful method to differentiate complete from partial mole, which is important to establish the prognosis of the patient.

Gestational trophoblastic neoplasia: clinical trends in 8 years at Hospital Universitario de Caracas.

OBJECTIVE: To analyze the clinical trends of gestational trophoblastic neoplasia (GTN) at the Department of Obstetrics and Gynecology, Hospital Universitario de Caracas (HUC). STUDY DESIGN: A medical record review was performed of epidemiologic, clinical and diagnostic features of 25 cases of GTN at HUC from 1997 to 2004. RESULTS: During the study period, 35,300 deliveries occurred, and 25 patients were diagnosed with GTN; the prevalence was 0.70:1,000 deliveries. The mean age was 29.2 years. Fifty-six percent were posthydatidiform mole (HM), 36% postchoriocarcinoma (CC), 4% postinvasive mole and 4% postabortion with abundant intermediate trophoblast. Vaginal bleeding was the main symptom in patients with CC. Two cases resembled ectopic pregnancy, and another resembled a vaginal endometrioma. Fifty-two percent of cases were at stage Ib; 76% received single-agent chemotherapy. Hysterectomy was performed in 6 cases. Twenty-one patients achieved remission, 2 showed regression and 2 died. CONCLUSION: GTN had a high prevalence because HUC is a reference center. The most common presentation was post-HM GTN. Vaginal bleeding is frequent in CC and can mimic other gynecologic diseases. Chemotherapy is helpful, and hysterectomy can be performed in selected cases at early stages or with severe vaginal bleed-with a good ing. GTN has a good prognosis, and early diagnosis is possible.

Gestational trophoblastic disease in ectopic pregnancy: A case series.

OBJECTIVE: To describe 6 cases of gestational trophoblastic disease (GTD) in ectopic pregnancy admitted to Hospital Universitario de Caracas (HUC). STUDY DESIGN: Medical records of 6 patients admitted to the Obstetrics and Gynecology Department, HUC, from 1996 to 2004 were reviewed. They underwent surgery with a diagnosis of ectopic pregnancy, and histologic analysis revealed GTD. Clinical trends were analyzed. RESULTS: The prevalence of GTD in ectopic pregnancy was 0.16:1,000 deliveries. The mean patient age was 29 years. The preceding gestation was a term delivery in 4 and abortion in 2. The mean gestational age at admission was 8 weeks. All patients complained of abdominal pain, and 3 of them also had vaginal bleeding. Ultrasound revealed an adnexal tumor in 5 cases; this tumor and hemoperitoneum (6 cases) were the most frequent surgical findings. Histopathologic diagnosis was partial mole in 5 and choriocarcinoma in 1. Four patients were lost to follow-up. CONCLUSION: In this series the prevalence of ectopic GTD was high. The condition can mimic the usual symptoms of ectopic pregnancy, especially when a hemoperitoneum is present. It is important to apply strict histologic criteria for GTD when a sample of ectopic pregnancy is analyzed and to monitor those patients with careful human chorionic gonadotropin follow-up.

¿ Metastasis o implantes de tumores serosos limitrofes (borderline) del ovario a ganglios linfaticos? revisión de la literatura a propósito de un caso / Metastasis or implant of bounding serous tumors? rervition of the literature a propuse of an case

Aproximadamente el 15 a 20 por ciento de todos los tumores epiteliales del ovario son limítrofes (borderline) o de bajo potencial de malignidad. De estos, el 30 al 5o por ceinto presentan "implantes peritoneales" para el momento del diagnóstico. En la s ultimas décadas se ha informado el compromiso de ganglios linfáticos asociados a tumores serosos lilmítrofes, este fenómeno es mucho más dificil de interpretar ya que establece la disyuntiva de sí se tratan de verdaderas metástasis o de una transformación secundaria de restos del epitelio mulleriano en el ganglio linfático. Tratando de aclarar un poco este controversial tema, presentamos una revisión de la literatura existente sobre el mismo así como los hallazgos clínicos, histológicos e inmumohistoquímicos de un caso de tumor seroso limítrofe (TSL) con compromiso de ganglios linfáticos