Paratubal mass carcinosarcoma: A case report of a rare malignancy in a rare location / Philippine Journal of Obstetrics and Gynecology

@#Carcinosarcoma, formerly known as malignant mixed Mullerian tumors (MMMTs) are highly aggressive tumors that include both malignant epithelial and mesenchymal or stromal elements. The most common site of carcinosarcomas in a female reproductive organ is the endometrium with an incidence of 2/100,000 females, whereas carcinosarcomas arising from the paratubal mass are extremely rare malignancies accounting for fewer than 0.1% of MMMTs. Carcinosarcomas of the Fallopian tube usually occur in the fifth to sixth decades in postmenopausal women with the most common presenting symptom of abdominal pain, followed by vaginal bleeding and abdominal distention. There have been limited published cases worldwide, that is, it has been a thing of interest to be analyzed in today’s era. A rare case of paratubal carcinosarcoma is highlighted in this paper as it discourses its clinicopathological characteristics and assesses the prognostic factors associated with treatment outcome and survival.

Clinical analysis of 14 cases of head and neck carcinosarcoma / 中华耳鼻咽喉头颈外科杂志

Objective: To investigate the clinicopathological characteristics, treatment and prognosis of head and neck carcinosarcoma. Methods: The clinical data of 14 patients with head and neck carcinosarcoma treated in the First Affiliated Hospital of Zhengzhou University from January 2010 to May 2020 were retrospectively analyzed, including 11 males and 3 females, with age range from 30 to 72 years old. Clinicopathological characteristics, treatments and follow-up results of patients were evaluated. Kaplan-Meier method was used to estimate the cumulative survival rate. Results: Histopathological examination showed the co-existence of malignant epithelial and mesenchymal components in all cases. Immunohistochemical staining of 13 cases showed cytokeratin and epithelial membrane antigens were positively expressed in the epithelial areas, whereas vimentin was positive in the malignant mesenchymal tissue area. Among 14 cases, 5 cases were treated with surgery, 3 cases with surgery and radiotherapy, and 6 cases with surgery, radiotherapy and chemotherapy. The follow-up time was 2-81 months, with a median follow-up time of 22.5 months. Except for one patient who was lost to follow-up in 21 months after treatment, among the remaining 13 patients, 4 patients had recurrence, 8 patients died, and 5 patients had a tumor-free survival. The Kaplan-Meier analysis showed that the 1, 3, and 5-year cumulative survival rates of 14 patients with head and neck carcinosarcoma were 64.3%, 57.1%, and 42.9%, respectively. Conclusions: Carcinosarcoma of the head and neck is rare in clinic, histopathological and immunohistochemical examinations are important basis for diagnosis, and surgery is a preferred treatment. Carcinosarcoma of the head and neck has a poor prognosis, and patients should be followed up for a long time.

The mutational repertoire of uterine sarcomas and carcinosarcomas in a Brazilian cohort: A preliminary study

OBJECTIVES: The present study aimed to contribute to the catalog of genetic mutations involved in the carcinogenic processes of uterine sarcomas (USs) and carcinosarcomas (UCSs), which may assist in the accurate diagnosis of, and selection of treatment regimens for, these conditions. METHODS: We performed gene-targeted next-generation sequencing (NGS) of 409 cancer-related genes in 15 US (7 uterine leiomyosarcoma [ULMS], 7 endometrial stromal sarcoma [ESS], 1 adenosarcoma [ADS]), 5 UCS, and 3 uterine leiomyoma (ULM) samples. Quality, frequency, and functional filters were applied to select putative somatic variants. RESULTS: Among the 23 samples evaluated in this study, 42 loss-of-function (LOF) mutations and 111 missense mutations were detected, with a total of 153 mutations. Among them, 66 mutations were observed in the Catalogue of Somatic Mutations in Cancer (COSMIC) database. TP53 (48%), ATM (22%), and PIK3CA (17%) were the most frequently mutated genes. With respect to specific tumor subtypes, ESS showed mutations in the PDE4DIP, IGTA10, and DST genes, UCS exhibited mutations in ERBB4, and ULMS showed exclusive alterations in NOTCH2 and HER2. Mutations in the KMT2A gene were observed exclusively in ULM and ULMS. In silico pathway analyses demonstrated that many genes mutated in ULMS and ESS have functions associated with the cellular response to hypoxia and cellular response to peptide hormone stimulus. In UCS and ADS, genes with most alterations have functions associated with phosphatidylinositol kinase activity and glycerophospholipid metabolic process. CONCLUSION: This preliminary study observed pathogenic mutations in US and UCS samples. Further studies with a larger cohort and functional analyses will foster the development of a precision medicine-based approach for the treatment of US and UCS.

Japan Society of Gynecologic Oncology 2018 guidelines for treatment of uterine body neoplasms / 부인종양

Current Status of Magnetic Resonance Imaging in Patients with Malignant Uterine Neoplasms: A Review

In this study, we summarize the clinical role of magnetic resonance imaging (MRI) in the diagnosis of patients with malignant uterine neoplasms, including leiomyosarcoma, endometrial stromal sarcoma, adenosarcoma, uterine carcinosarcoma, and endometrial cancer, with emphasis on the challenges and disadvantages. MRI plays an essential role in patients with uterine malignancy, for the purpose of tumor detection, primary staging, and treatment planning. MRI has advanced in scope beyond the visualization of the many aspects of anatomical structures, including diffusion-weighted imaging, dynamic contrast enhancement-MRI, and magnetic resonance spectroscopy. Emerging technologies coupled with the use of artificial intelligence in MRI are expected to lead to progressive improvement in case management of malignant uterine neoplasms.

A Case of Mucoepidermoid Carcinoma Mixed with Osteosarcoma of the Parotid Gland Extending to the Parapharyngeal Space / 대한이비인후과학회지

Carcinosarcomas, also known as true malignant mixed tumors, are rare tumors of the salivary gland and are composed of both malignant epithelial and malignant mesenchymal elements. They may occur in pre-existing pleomorphic adenomas or arise de novo. Here we report the first case of carcinosarcoma of the parotid gland composed of mucoepidermoid carcinoma and osteosarcoma. The tumor had originated from the parotid gland and extended into the parapharyngeal space. To the best of our knowledge, there have been no reports on mucoepidermoid carcinoma mixed with osteosarcoma ex pleomorphic adenoma in the parotid gland.

Carcinosarcoma expleomorphic adenoma of the parotid gland with no history of long-standing or recurrent pleomorphic adenoma - a case report / The Health Sciences Journal

Carcinosarcoma ex pleomorphic adenoma of the salivary gland is an extremely rare tumor of themajor and minor salivary glands that is composed of a mixture of both carcinomatous and sarcomatouselements with an identifiable benign epithelial and mesenchymal tumor counterpart.This report describes a rare case of carcinosarcoma ex pleomorphic adenoma involving the left parotidgland in a 61-year-old female with no history of a long-standing pleomorphic adenoma, nor a recurrentpleomorphic adenoma, and describes its morphology and important immunohistochemistry findings.Carcinosarcoma ex pleomorphic adenoma contains features of the two tumors under malignant mixedtumors, which are carcinosarcoma and carcinoma ex pleomorphic adenoma. Immunohistochemistrystudies were done to document the epithelial and mesenchymal areas from both the malignant andbenign sections of the tumor and to classify the carcinoma and sarcoma component, consisting ofadenocarcinoma, not otherwise specified for the carcinoma component, and myxoid chondrosarcomaand mesenchymal chondrosarcoma for the sarcoma component.The paucity of documented cases of carcinosarcoma ex pleomorphic adenoma in prior scientificpublications requires reporting cases such as this. Furthermore, the report provides an insight intothe more complex molecular and structural changes that manifest as cancer behavior in the tumorsof the salivary gland. The case contributes to the fund of knowledge for diagnosis and improvementof quality of care.

Rapid progression of sarcomatoid carcinoma of the common bile duct

Since sarcomatoid carcinoma in the common bile duct (CBD) is rarely reported, the clinical course and prognosis after surgery are unclear. We report a case of a patient who died within 1 month after surgery due to rapid tumor progression. A 65-year-old woman had abdominal pain with jaundice. She was diagnosed with CBD cancer and underwent pancreatoduodenectomy. Pathologic examination revealed sarcomatoid carcinoma. There was no postoperative complication, but multiple liver metastasis was diagnosed on computed tomography at 7 days after surgery. Also, the patient complained of abdominal pain and had jaundice with elevated liver enzyme on the 14th postoperative day. Her general condition was getting worse and she died of hepatic failure 23 days after surgery. We report a case of sarcomatoid carcinoma of the CBD that progressed very rapidly. Further research and case reports are needed to establish proper diagnostic and treatment tools.

Cutaneous Carcinosarcoma: a Clinicopathologic and Immunohistochemical Analysis of 11 Korean Cases

BACKGROUND: Cutaneous carcinosarcoma is a rare biphasic tumor comprising malignant epithelial and heterologous mesenchymal elements. Data on the clinical and histopathologic characteristics of this tumor in Asian populations are not available. The purpose of this study was to investigate the clinicopathologic and immunohistochemical features of cutaneous carcinosarcoma in the Korean population. METHODS: We retrospectively reviewed the records of 11 patients with cutaneous carcinosarcoma who were diagnosed from 2006 to 2016. RESULTS: The mean patient age at diagnosis was 71.5 years (range, 43–96 years) and there was a men predilection. The most common site of cutaneous carcinosarcoma was the head and neck (8/11, 72.7%). Histopathologically, most tumors showed a characteristic morphology consisting of two types of tumor cells, varied differentiated epithelial cells (such as basal or squamous cells) and spindle cells with transition zones between the two components. These two cell types also demonstrated variable immunohistochemical characteristics. CONCLUSION: Although the number of cases in this study was limited, our results provide valuable insight into the clinical and histopathologic characteristics of cutaneous carcinosarcoma in the Korean population.

Radiation-Induced Uterine Carcinosarcoma after Concurrent Chemoradiotherapy for Cervical Squamous Cell Carcinoma

Abstract Objective To describe a case of radiation-induced uterine carcinosarcoma 6 years after a cervical squamous cell carcinoma treatment, which imposed some diagnostic and management challenges. Case Report A 57-year-old woman with a history of pelvic chemoradiotherapy ~ 6.5 years before the event described in this study, following an International Federation of Gynecology and Obstetrics (FIGO) stage IIB cervical cancer, presented with a cervical mass, involving the uterine cavity, the cervical canal and the upper two thirds of the vagina. The biopsy showed a poorly differentiated carcinoma, and a positron emission tomography (PET) scan excluded distant metastasis, although it was unable to define the origin of the tumor as either a new primary malignancy of the endometrium/cervix or as a cervical recurrence. Surgical staging procedure was performed, and the diagnosis was endometrial carcinosarcoma, FIGO stage IIB. The patient was not able to complete the adjuvant therapy, and the progression of the disease was remarkable. Conclusion The present case highlights one of the less common but more serious consequences of radiotherapy for cervical cancer, which has an increasing incidence in younger women, raising concerns about the long-termconsequences of its management.

Cervical carcinosarcoma: Case report and review of the literature / Carcinosarcoma del cuello uterino: reporte de caso y revisión de la literatura

ABSTRACT Objective: To report the case of a patient with cervical carcinosarcoma and intra-abdominal bleeding, and to review the available literature on the treatment and prognosis of this condition. Materials and methods: Case report of an 84-year-old patient who presented with an abdominal mass and urinary tract obstruction. During hospital stay, she developed intra-abdominal bleeding with signs of shock, requiring total abdominal hysterectomy with bilateral salpyngo-oophorectomy, hypogastric artery ligation and pelvic packing as interventions to control bleeding. Histology reported a diagnosis of carcinosarcoma of the uterine cervix. The patient evolved adequately and was referred for oncologic management. The search in the literature was conducted in the Medline vía PubMed, SciELO and Ovid databases, using the terms "uterine carcinosarcoma" "treatment" "cancer treatment" "treatment review" and "treatment outcome". The search was limited by language type but not by year of publication. Results: Of the references, 19 met the inclusion and exclusion criteria, and they were predominantly case reports. The clinical stage most frequently reported was FIGO IB in close to 53% of cases, and the most frequent presentation was genital bleeding associated with a pelvic mass. With an average follow-up of 15 months, survival in patients receiving radiotherapy or taken to surgery is 17% and 68%, respectively. Of the patients taken to surgery as primary treatment, 63% remained disease-free during the first two years of follow-up, with a frequency of nearly 100% during the same period when radiotherapy was given after surgery. Conclusions: Cervical carcinosarcoma is an infrequent condition whose most common clinical manifestation is the presence of genital bleeding accompanied by a pelvic mass. Surgery, radiotherapy and chemotherapy are therapeutic options available for the treatment of this entity. However, regardless of the treatment provided, survival prognosis in women with this disease is lower than in women with squamous cell carcinoma or adenocarcinoma. Further studies of high methodological quality are required to assess the safety and effectiveness of the various interventions used as therapeutic approach to this entity.

RESUMEN Objetivo: reportar el caso de una paciente con carcinosarcoma del cuello uterino con sangrado intraabdominal, y revisar la literatura disponible sobre el tratamiento y pronóstico de la entidad. Materiales y métodos: se reporta el caso de una paciente de 84 años, que consultó por masa abdominal y obstrucción del tracto urinario. Durante la estancia hospitalaria presentó sangrado intraabdominal con signos de choque, por lo que fue necesario realizar histerectomía abdominal total con salpingo-oforectomía bilateral, ligadura de hipogástricas y taponamiento de cavidad pélvica como intervenciones para controlar el sangrado. El estudio histológico reportó como diagnóstico carcinosarcoma del cérvix. La paciente evolucionó de forma adecuada y fue remitida para continuar manejo por oncología. Para la búsqueda de la literatura se realizó una pesquisa en las bases de datos Medline vía PubMed, SciELO y Ovid, utilizando los términos "uterinecarcinosarcoma" "treatment "cáncer treatment" "treatmentreview" y "treatmentoutcome". La búsqueda se limitó por tipo de idioma, pero no por año de publicación. Resultados: 19 estudios cumplieron con los criterios de inclusión y de exclusión, estas fueron predominantemente reportes de caso. El estadio clínico reportado con mayor frecuencia fue FIGO IB en cerca del 53 % de los casos, y la presentación más frecuente fue el sangrado genital acompañado de masa pélvica. Con un seguimiento promedio de 15 meses, la sobrevida para este tumor es del 17 % para las pacientes que recibieron radioterapia. El 63 % de las pacientes que recibieron cirugía como tratamiento primario permanecieron libres de enfermedad durante los dos primeros años de seguimiento, con una frecuencia cercana al 100% para este mismo periodo cuando se administró radioterapia posterior a la cirugía. Conclusiones: el carcinosarcoma de cérvix es una entidad poco frecuente, cuya manifestación clínica más común suele ser la presencia de sangrado genital acompañado de masa pélvica. Dentro de las opciones terapéuticas disponibles para tratar esta entidad se encuentran la cirugía, la radio y la quimioterapia. No obstante, independientemente del tratamiento proporcionado, el pronóstico de sobrevida para las mujeres con esta patología es inferior al de las mujeres con carcinomas escamosos o adenocarcinomas. Se requieren estudios de alta calidad metodológica que evalúen la seguridad y la efectividad de las diferentes intervenciones para el abordaje terapéutico de esta entidad.

The demographic features, clinical outcomes, prognosis and treatment options for patients with sarcomatoid carcinoma of the urinary bladder: a single centre experience

ABSTRACT Introduction Carcinosarcoma of the bladder is a very rare neoplasm. The pathogenesis of carcinosarcomas is not clearly understood and remains a subject of debate. Whilst there is some research conceptualizing the histopathological findings of bladder carcinosarcomas, the demographic features, clinical outcomes, prognosis and treatment options remain unclear. Materials and Methods We analyzed 12 consecutive cases of patients with sarcoma-toid bladder cancer who were treated surgically at a single Urology Department be-tween 1999 and 2015. Radiology, pathology and surgical reports were reviewed to determine the pathological staging at the time of cystectomy. These were directly compared with 230 patients having cystectomies for urothelial cell carcinoma. The sarcomatoid patients, were compared to patients with urothelial cell cancers. The other histological sub types, squamous cell (17), neuroendocrine (9), metastatic (7), mixed (4), adenocarcinoma (3), were not included. Results and conclusion Carcinosarcoma of the urinary bladder is often described in the literature as a highly malignant neoplasm that is rapidly lethal. We found that the sarcoma does not offer a worse prognosis than conventional high-grade urothelial car-cinoma. There is no significant difference in grade, stage, positive surgical margin rate, nodal involvement, associated prostate cancer or incidence rates of progression, all cause or disease specific mortality. There was a barely significant difference in carcinoma in-situ. However, carcinosarcomas are three times the volume of urothelial cell tumors which may contribute to its reputation as an aggressive tumour (44cc v 14cc). Sarcomatous elements do not appear, from our small study, to bestow a worse prognosis.

Clinical utility of CA-125 in the management of uterine carcinosarcoma / 부인종양

No abstract available.

Diagnostic Value of ¹⁸F-FDG PET/CT and MRI in the Preoperative Evaluation of Uterine Carcinosarcoma / 대한핵의학회잡지

PURPOSE: This study aimed to compare the diagnostic value of ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) and magnetic resonance imaging (MRI) in the preoperative evaluation of uterine carcinosarcoma.METHODS: Fifty-four women with pathologically confirmed uterine carcinosarcoma who underwent preoperative FDG PET/CT and MRI from June 2006 to November 2016 were included. Pathologic findings from primary tumor lesions, para-aortic and pelvic lymph node (LN) areas, and peritoneal seeding lesions were compared with the FDG PET/CT and MRI findings. The maximum standardized uptake value (SUVmax) of the primary tumor and LN was obtained. The tumor-to-liver ratio (TLR) was calculated by dividing the SUVmax of the primary tumor or LN by the mean SUVof the liver.RESULTS: For detecting primary tumor lesions (n = 54), the sensitivity and accuracy of FDGPET/CT (53/54) andMRI (53/54) were 98.2%. The sensitivity, specificity, and accuracy of FDG PET/CT versus MRI were as follows: 63.2% (12/19) versus 26.3% (5/19), 100% (35/35) versus 100% (35/35), and 87.0% versus 74.0%, respectively, for pelvic LN areas (p = 0.016); 85.7% (12/14) versus 42.9%(6/14), 90%(36/40) versus 97.5%(39/40), and 88.9%versus 83.3%, respectively, for para-aortic LN areas (p = 0.004); and 59.4% (19/32) versus 50% (16/32), 100% (22/22) versus 100% (22/22), and 75.9% versus 70.4%, respectively, for peritoneal seeding lesions (p = 0.250). For distant metastasis, the sensitivity, specificity, and accuracy of FDG PET/CTwere 100 (8/8), 97.8 (45/46), and 98.2%, respectively.CONCLUSION: FDG PET/CT showed superior diagnostic accuracy compared to MRI in detecting pelvic and para-aortic LN metastasis in patients with uterine carcinosarcoma. Moreover, FDG PET/CT facilitated the identification of distant metastasis.

Trends of uterine carcinosarcoma in the United States / 부인종양

OBJECTIVE: Uterine carcinosarcoma (UCS) is a rare type of high-grade endometrial cancer (EC) that has been understudied with population-based statistics due to its rarity. This study examined temporal trends in the proportion of UCS among women with EC. METHODS: This is a retrospective observational study examining The Surveillance, Epidemiology, and End Results program between 1973–2013. Primary EC cases were eligible for analysis, and a time-specific proportion of UCS was examined during the study period. RESULTS: UCS was seen in 11,000 (4.7%) women among 235,849 primary EC cases. Mean age at UCS diagnosis increased from 65.9 to 71.7 years between 1973–1989 and then decreased from 71.7 to 67.0 years between 1989–2013 (both, p < 0.001). Proportion of Black women significantly increased during the study period (11.9%–20.0%, p < 0.001), whereas the proportion of White women decreased from 86.0% to 60.5% between 1987–2013 (p < 0.001). There was a significant increase in the proportion of UCS among primary EC from 1.7% to 5.6% between 1973–2013 (p < 0.001). Among type II ECs (n=76,118), the proportion of UCS also increased significantly from 6.0% to 17.5% between 1973–2013 (p < 0.001). An increasing proportion of UCS was seen in both young and older women but the magnitude of interval increase was larger in the older age group between 1973–2013 ( < 60 years, from 1.3% to 3.3%. p < 0.001; and ≥60 years, from 2.6% to 7.0%, p < 0.001). CONCLUSION: Our study demonstrated that the proportion of UCS has significantly increased among EC, accounting for more than 5% in recent years.

Fine-Needle Aspiration Cytology of Carcinosarcoma in the Salivary Gland: An Extremely Rare Case Report

Carcinosarcoma of the salivary gland is an extremely rare tumor that is composed of both malignant epithelial and mesenchymal components. Diagnosing carcinosarcoma with fine-needle aspiration cytology is challenging because of its overlapping cytomorphologic characteristics with other high-grade malignant salivary gland tumors. Among the many features, including pleomorphic oncocytoid epithelial components, necrotic background, and mitoses, recognizing the singly scattered atypical spindle cells is most essential in carcinosarcoma. We present a case of a 66-year-old male patient with characteristic features of carcinosarcoma, who was successfully treated by wide local excision and subsequent radiation therapy.

Carcinosarcoma de laringe: reporte de dos casos / Carcinosarcoma of the larynx: report of two cases

El carcinosarcoma de laringe es un tumor bifásico raro que representa menos del 1% de todos los tumores malignos de laringe. Debido a su doble naturaleza epitelial y mesenquimal esta neoplasia ha sido denominada de distintas maneras en la literatura, siendo indispensable el estudio mediante inmunohistoquímica para establecer un diagnóstico correcto. Se presentan 2 casos de carcinosarcoma de laringe, confirmados mediante estudio con inmunohistoquímica, ambos tratados mediante laringectomía total. Se elabora una discusión de los principales aspectos clínicos, histopatológicos y terapéuticos de esta infrecuente neoplasia.

The larynx carcinosarcoma is a rare biphasic tumor that represents less than 1% of all malignant tumors of the larynx. Because of its biphasic epithelial and mesenchymal nature this neoplasm has been called in different ways in the literature being indispensable the study by immunohistochemistry to establish a proper diagnosis. We present 2 cases of larynx carcinosarcoma confirmed by immunohistochemical study, both treated with total laryngectomy. A discussion of the main clinical, histopathological and therapeutic aspects of this rare neoplasm is made.

Pazopanib as a second line treatment for uterine and ovarian carcinosarcoma: a single institutional study / 부인종양

No abstract available.

Port-Site Metastasis of Uterine Carcinosarcoma after Laparoscopy

We report a case of port-site metastasis after laparoscopic surgery for early stage uterine carcinosarcoma (UCS) and review the related literature. A 53-year-old woman with suspected uterine malignance underwent a total laparoscopic hysterectomy with bilateral salpingo-oophorectomy, infra-colic omentectomy, and pelvic lymphadenectomy resulting pathologically in a stage IA UCS. Twelve months later she developed a palpable abdominal-wall mass at the trocar site without other synchronous metastases. A mass resection was performed and it was pathologically diagnosed with port-site metastasis of UCS. When performing surgery for UCS, specimens should be carefully removed in case small pieces of the occult disseminated metastatic tissues are trapped between the outer surface of the trocar sleeve and the abdominal wall incisional canal. Despite the low incidence, a laparotomy might be considered rather than laparoscopy to prevent port-site metastasis and more gynecological oncology clinical practices might be relevant to the management of port-site metastasis.

Prognostic assessment of sarcomatous histologic subtypes of ovarian carcinosarcoma

OBJECTIVE: Ovarian carcinosarcoma is a rare subtype of this disease that has not been thoroughly investigated. The aim of this study was to evaluate the prognostic factors and out comes in patients with ovarian carcinosarcoma. METHODS: All patients with histologically confirmed ovarian carcinosarcoma who were treated at Cheil General Hospital and Women's Healthcare Center between January 2000 and December 2015 were identified and analyzed. Data were extracted from medical records, and statistical analyses were performed to determine correlations between clinicopathological parameters and survival outcomes. RESULTS: Of the 822 patients diagnosed with ovarian cancer over 16 years, 11 (1.3%) had ovarian carcinosarcoma histology. Every patient underwent surgery as the initial treatment followed by intravenous adjuvant chemotherapy. Only 18.1% of cases were early stage (I or II) while 81.8% were advanced stage (III or IV) according to the FIGO (International Federation of Gynecology and Obstetrics) classification. Six cases were of the homologous subtype (54.5%) and five were of the heterologous subtype (45.5%). There was no significant difference in survival according to stage (P=0.24). The heterologous subtype and residual disease were associated with poor disease-free survival (P=0.02 and P=0.04) and overall survival (P=0.02 and P=0.04), On multivariate analysis, the histological subtype was an independent prognostic factor (P=0.02). CONCLUSION: Optimal cytoreduction without gross residual disease and a homologous subtype are favorable prognostic factors in terms of disease relapse and survival.