CT Enterography for Preoperative Evaluation of Peritoneal Carcinomatosis Index in Advanced Ovarian Cancer.

To compare the diagnostic performance of routine CT (rCT), CT enterography (CTE) and intraoperative quantification of PCI to surgical and pathological reference standards in patients with advanced ovarian cancer, a retrospective study of 122 patients who underwent cytoreduction surgery for ovarian peritoneal carcinomatosis was conducted. Radiological, surgical, and pathological PCIs were obtained from the corresponding reports, and the latter two were considered reference standards. The radiological techniques used were rCT: 64 MDCT (32 × 1 mm) (100 mL iopromide 370 i.v., 800 mL water p.o.), and CTE: 64 MDCT (64 × 0.5 mm) (130 mL iopromide 370 i.v., 1800 mL mannitol solution p.o., 20 mg buscopan i.v.). Data were grouped by imaging technique and analyzed using total PCI and stratified by tumor burden (low-PCI < 10, high-PCI > 20). Agreement, diagnostic performance and degree of cytoreduction were evaluated. Disappointing results for rCT and CTE were obtained when using a surgical referent, but better diagnostic performance and concordance (0.86 vs. 0.78 vs. 0.62, p < 0.05) was observed when using a pathological referent-surgical PCI overestimates and overstaged patients. PCI is underestimated by rCT rather than CTE. For high-PCI, the ROC curve was mediocre for CTE and useless for rCT, as it failed to identify any cases. For low-PCI, the ROC was excellent (86% CTE vs. 75% rCT). In four cases with low-PCI as determined by rCT, cytoreduction was suboptimal. CTE has a better diagnostic performance than rCT in quantifying PCI in patients with advanced ovarian cancer, suggesting that CTE should be used as the initial technique. Surgical-PCI could be considered as an imperfect standard reference.

Protocolo para la valoración anatomopatológica de las piezas de cirugía de carcinomatosis peritoneal de origen ovárico, tubárico y peritoneal / Protocol for the examination of surgical specimens from patients with peritoneal carcinomatosis originating in ovary, fallopian tube and peritoneum

La carcinomatosis peritoneal (CP) es una entidad tumoral con una alta tasa de morbimortalidad, considerada la evolución común de varias neoplasias abdominopélvicas, entre ellas, el carcinoma de ovario, trompa uterina y peritoneo. Aunque muchos de estos tumores son sensibles a quimioterapia sistémica, el pronóstico es desfavorable por la elevada tasa de recurrencia. La cirugía de citorreducción (CC) se emplea como tratamiento de primera línea en los estadios avanzados, ya que aumenta la supervivencia de los pacientes cuando la CC es óptima. El procedimiento terapéutico descrito por Sugarbaker para el carcinoma de colon en la década de los 80, que incluye CC y quimioterapia intraperitoneal ha sido adaptado a la CP de origen ginecológico. El estudio anatomopatológico de esta cirugía empieza a ser una práctica habitual en algunos de nuestros servicios. Es un procedimiento complejo, que requiere especialización y sistematización para valorar un gran número de piezas quirúrgicas, cuantificando de forma lo más objetiva posible la carga tumoral. El objetivo de este trabajo es mostrar la experiencia inicial en nuestro servicio de anatomía patológica con pacientes diagnosticadas de CP de origen ovárico, tubárico y peritoneal y sometidas a cirugía citorreductora, destacando el papel del patólogo. Mostramos el esquema de trabajo utilizado en nuestro servicio y resumimos los resultados iniciales de 31 pacientes intervenidas entre enero de 2013 y julio de 2014

Peritoneal carcinomatosis (PC) is a malignant entity with a high rate of morbimortality. It is considered an end-stage common to several abdominal and pelvic malignant tumours, such as epithelial ovarian, fallopian tubal and peritoneal cancer. Although many of these tumors have a good response to chemotherapy, prognosis is poor due to the high rate of recurrence. Surgeons, gynecologists and oncologists are increasingly concerned with improving the survival. The surgical technique described by Sugarbaker in the eighties is a plausible option. It aims for a complete resection of macroscopic carcinomatosis (cytoreductive surgery) followed by intraoperative or perioperative intraperitoneal chemotherapy. This therapeutic option necessarily involves specific multidisciplinary units; histopathology of specimens from this surgical technique is now more frequent in our department. We describe our initial experience with PC originating from epithelial ovarian, tubal and peritoneal cancer treated with the modified Sugarbaker surgery employed in our hospital. We outline our protocol designed to achieve uniformity in procedure, and summarize the initial results

[Protocol for the examination of surgical specimens from patients with peritoneal carcinomatosis originating in ovary, fallopian tube and peritoneum]. / Protocolo para la valoración anatomopatológica de las piezas de cirugía de carcinomatosis peritoneal de origen ovárico, tubárico y peritoneal.

Peritoneal carcinomatosis (PC) is a malignant entity with a high rate of morbimortality. It is considered an end-stage common to several abdominal and pelvic malignant tumours, such as epithelial ovarian, fallopian tubal and peritoneal cancer. Although many of these tumors have a good response to chemotherapy, prognosis is poor due to the high rate of recurrence. Surgeons, gynecologists and oncologists are increasingly concerned with improving the survival. The surgical technique described by Sugarbaker in the eighties is a plausible option. It aims for a complete resection of macroscopic carcinomatosis (cytoreductive surgery) followed by intraoperative or perioperative intraperitoneal chemotherapy. This therapeutic option necessarily involves specific multidisciplinary units; histopathology of specimens from this surgical technique is now more frequent in our department. We describe our initial experience with PC originating from epithelial ovarian, tubal and peritoneal cancer treated with the modified Sugarbaker surgery employed in our hospital. We outline our protocol designed to achieve uniformity in procedure, and summarize the initial results.