French AFU Cancer Committee Guidelines Update 2022-2024: Adrenal tumor - Assessment of an adrenal incidetaloma and oncological management

INTRODUCTION

The objective of this publication is to recall the initial work-up when faced with an adrenal incidentaloma and, if necessary, to establish the oncological management of an adrenal malignant tumor.

MATERIAL AND METHODS

The multidisciplinary working group updated French urological guidelines about oncological assessment of the adrenal incidentaloma, established by the CCAFU in 2020, based on an exhaustive literature review carried out on PubMed.

RESULTS

Although the majority of the adrenal masses are benign and non-functional, it is important to investigate them, as a percentage of these can cause serious endocrine diseases or be cancers. Malignant adrenal tumors are mainly represented by adrenocortical carcinomas (ACC), malignant pheochromocytomas (MPC) and adrenal metastases (AM). The malignancy assessment of an adrenal incident includes a complete history, a physical examination, a biochemical/hormonal assessment to look for subclinical hormonal secretion. Diagnostic hypotheses are sometimes available at this stage, but it is the morphological and functional imaging and the histological analysis, which will make it possible to close the malignancy assessment and make the oncological diagnosis.

CONCLUSIONS

ACC and MPC are mainly sporadic but a hereditary origin is always possible. ACC is suspected preoperatively but the diagnosis of certainty is histological. The diagnosis of MPC is more delicate and is based on clinic, biology and imagery. The diagnosis of certainty of AM requires a percutaneous biopsy. At the end, the files must be discussed within the COMETE - adrenal cancer network (Appendix 1).

French AFU Cancer Committee Guidelines - Update 2022-2024: penile cancer

OBJECTIVE

To update French oncology guidelines concerning penile cancer.

METHODS

Comprehensive Medline search between 2020 and 2022 upon diagnosis, treatment and follow-up of testicular germ cell cancer to update previous guidelines. Level of evidence was evaluated according to AGREE-II.

RESULTS

Epidermoid carcinoma is the most common penile cancer histology. Physical examination is mandatory to define local and inguinal nodal cancer stage. MRI with artificial erection can help to assess deep infiltration in cases of organsparing intention. Node negative patients (defined by palpation and imaging) will present micro nodal metastases in up to 25% of cases. Invasive lymph node assessment is thus advocated except for low risk patients. Sentinel node dynamic biopsy is the first line technique. Modified bilateral inguinal lymphadenectomy is an option with higher morbidity. 18-FDG-PET is recommended in patients with palpable nodes. Chest, abdominal and pelvis computerized tomography is an option. Fine needle aspiration (when positive) is an easy way to assess inguinal palpable node pathological involvement. Its results determine the type of lymphadenectomy to be performed (for diagnostic or curative purposes). Treatment is mostly surgical. Free margins status is essential, but it also has to be organ-sparing when possible. Brachytherapy and topic agents can cure in selected cases. Lymph node assessment should be synchronous to the removal of the tumour when possible. Limited inguinal lymph node involvement (pN1 stage) can be cured with the only lymphadenectomy. In case of larger lymph node stage, one should consider multidisciplinary treatment including chemotherapy and inclusion in a trial.

CONCLUSIONS

Penile cancer needs demanding surgery to be cured, surrounded by chemotherapy in node positive patients. Lymph nodes involvement is a major prognostic factor. Thus, inguinal node assessment cannot be neglected.

[French ccAFU guidelines - update 2020-2022: penile cancer]

OBJECTIVE

- To update French oncology guidelines concerning penile cancer.

METHODS

- Comprehensive Medline search between 2018 and 2020 upon diagnosis, treatment and follow-up of testicular germ cell cancer to update previous guidelines. Level of evidence was evaluated according to AGREE-II.

RESULTS

- Epidermoid carcinoma is the most common penile cancer histology. Physical examination is mandatory to define local and inguinal nodal cancer stage. MRI with artificial erection can help to assess deep infiltration in cases of organ-sparing intention. Node negative patients (defined by palpation and imaging) will present micro nodal metastases in up to 25% of cases. Invasive lymph node assessment is thus advocated except for low risk patients. Sentinel node dynamic biopsy is the first line technique. Modified bilateral inguinal lymphadenectomy is an option with higher morbidity. 18-FDG-PET is recommended in patients with palpable nodes. Chest, abdominal and pelvis computerized tomography is an option. Fine needle aspiration (when positive) is an easy way to assess inguinal palpable node pathological involvement. Its results determine the type of lymphadenectomy to be performed (for diagnostic or curative purposes). Treatment is mostly surgical. Free margins status is essential, but it also has to be organ-sparing when possible. Brachytherapy and topic agents can cure in selected cases. Lymph node assessment should be synchronous to the removal of the tumour when possible. Limited inguinal lymph node involvement (pN1 stage) can be cured with the only lymphadenectomy. In case of larger lymph node stage, one should consider multidisciplinary treatment including chemotherapy and inclusion in a trial.

CONCLUSIONS

- Penile cancer needs demanding surgery to be cured, surrounded by chemotherapy in node positive patients. Lymph nodes involvement is a major prognostic factor. Thus, inguinal node assessment cannot be neglected.

[Cancers of the external genital organs of male in Hérault: Results from the Hérault tumor register (RTH) over a period of 30 years (1987-2016)]

AIM

The objective of this study is to present the history of cancers of the external genital organs of male in Hérault using data from the Hérault tumor register (RTH) over a period of 30 years.

PATIENTS AND METHODS

Using the RTH database, we studied the development of testicular germ cell tumors (TGCT) and penile cancer (PC) over 30 years, from 1987 to 2016. We analyzed the incidence and mortality data for these tumors. We compared these results to French, European and global data.

RESULTS

In 30 years of registration we have recorded 725 cases of TGCT and 175 cases of PC. The age standardized incidence rate (ASR) of TGCT has doubled between 1987 and 2016 (4.2 per 100,000 in 1987 and 9.3 per 100,000 in 2016). It was multiplied by 2.63 in the population of patients aged 30 to 44. There is a decrease of the mortality rate with a ASR of 0.8 deaths per 100,000 in 1987, and 0.4/100 000 in 2016. The PC incidence ASR was stable between 1987 and 2016 (0.4-0.9/100,000). Mortality is stable with a ASR between 0.1 and 0.3 deaths per 100,000 between 1987 and 2016.

CONCLUSION

The incidence of TGCT has increased sharply in the Hérault over the past 30 years, while a decrease in mortality has been observed. The proportion of seminomas is increasing; it has gone from 53 % to 60 % in 30 years in the Hérault. The incidence and mortality of PC shows a stability in the Hérault over the past 30 years.

[French ccAFU guidelines - update 2020-2022: malignancy assessment of an adrenal incidentaloma]

INTRODUCTION

- The objective of this publication is to recall the initial oncological management of adrenal incidentalomas.

MATERIAL & METHODS

- The multidisciplinary working group updated french urological guidelines established by the CCAFU in 2018, based on an exhaustive literature review carried out on PubMed.

RESULTS

- Although the majority of the adrenal masses are benign and non-functional, it is important to investigate them, as a percentage of these can cause serious endocrine diseases or be cancers. Malignant adrenal tumors are mainly represented by Adrenocortical Carcinomas (ACC), malignant pheochromocytomas (MPC) and adrenal metastases (AM). The malignancy assessment of an adrenal incident includes a complete history, a physical examination, a biochemical / hormonal assessment to look for subclinical hormonal secretion. Diagnostic hypotheses are sometimes available at this stage, but it is the morphological and functional imaging and the histological analysis which will make it possible to close the malignancy assessment and make the oncological diagnosis.

CONCLUSIONS

- AC and MPC are mainly sporadic but a hereditary origin is always possible. ACC is suspected preoperatively but the diagnosis of certainty is histological. The diagnosis of MPC is more delicate and is based on clinic, biology and imagery. The diagnosis of certainty of AM requires a percutaneous biopsy. At the end, the files must be discussed within the COMETE - adrenal cancer network (Appendix 1).

[French ccAFU guidelines - update 2020-2022: testicular germ cell tumors]

OBJECTIVE

- To update French guidelines concerning testicular germ cell cancer.

MATERIALS AND METHODS

- Comprehensive Medline search between 2018 and 2020 upon diagnosis, treatment and follow-up of testicular germ cell cancer and treatments toxicities. Level of evidence was evaluated.

RESULTS

- Testicular Germ cell tumor diagnosis is based on physical examination, biology tests (serum tumor markers AFP, hCGt, LDH) and radiological assessment (scrotal ultrasound and chest, abdomen and pelvis computerized tomography). Total inguinal orchiectomy is the first-line treatment allowing characterization of the histological type, local staging and identification of risk factors for micrometastases. In case of several therapeutic options, one must inform his patient balancing risks and benefits. Surveillance is usually chosen in stage I seminoma compliant patients as the evolution rate is low between 15 to 20%. Carboplatin AUC7 is an alternative option. Radiotherapy indication should be avoided. In stage I non seminomatous patients, either surveillance or risk-adapted strategy can be applied. Staging retroperitoneal lymphadenectomy has restricted indications. Metastatic germ cell tumors are usually treated by PEB chemotherapy according to IGCCCG prognostic classification. Lombo-aortic radiotherapy is still a standard treatment for stage IIA. Residual masses should be evaluated by biological and radiological assessment 3 to 4 weeks after the end of chemotherapy. Retroperitoneal lymphadenectomy is advocated for every non seminomatous residual mass more than one cm. 18FDG uptake should be evaluated for each seminoma residual mass more than 3 cm.

CONCLUSIONS

- A rigorous use of classifications is mandatory to define staging since initial diagnosis. Applying treatments based on these classifications leads to excellent survival rates (99% in CSI, 85% in CSII+).

[Recommendations CCAFU on the management of cancers of the urogenital system during an epidemic with Coronavirus COVID-19]

Objectif

La population française est confrontée à la pandémie de COVID-19 et le système de santé a été réorienté en urgence pour la prise en charge des patients atteints du coronavirus. La prise en charge des cancers de l’appareil urinaire et génital masculin doit être adaptée à ce contexte.

Matériel et méthode

Un avis d’experts documenté par une revue de la littérature a été formulé par le Comité de Cancérologie de l’Association Française d’Urologie (CCAFU).

Résultats

La prise en charge médicale et chirurgicale des patients atteints de cancers de l’appareil urinaire et génital masculin doit être adaptée en modifiant les modalités de consultation, en priorisant les interventions en fonction du pronostic intrinsèque des cancers en tenant compte des comorbidités du patient. La protection des urologues vis-à-vis du COVID-19 doit être prise en considération.

Conclusion

Le CCAFU émet un avis d’experts quant aux mesures à prendre pour adapter la prise en charge des cancers de l’appareil urinaire et génital masculin au contexte de pandémie par COVID-19.

[French ccAFU guidelines - Update 2018-2020: Testicular germ cell tumors]

OBJECTIVE

To update French guidelines concerning testicular germ cell cancer.

METHODS

Comprehensive Medline search between 2016 and 2018 upon diagnosis, treatment and follow-up of testicular germ cell cancer and treatments toxicities. Level of evidence was evaluated.

RESULTS

Testicular Germ cell tumor diagnosis is based on physical examination, biology tests (serum tumor markers AFP, hCGt, LDH) and radiological assessment (scrotal ultrasound and chest, abdomen and pelvis computerized tomography). Total inguinal orchiectomy is the first- line treatment allowing characterization of the histological type, local staging and identification of risk factors for micrometastases. In case of several therapeutic options, one must inform his patient balancing risks and benefits. Surveillance is usually chosen in stage I seminoma compliant patients as the evolution rate is low between 15 to 20 %. Carboplatin AUC7 is an alternative option. Radiotherapy indication should be avoided. In stage I non-seminomatous patients, either surveillance or risk-adapted strategy can be applied. Staging retroperitoneal lymphadenectomy has restricted indications. Metastatic germ cell tumors are usually treated by PEB chemotherapy according to IGCCCG prognostic classification. Lombo-aortic radiotherapy is still a standard treatment for stage IIA. Residual masses should be evaluated by biological and radiological assessment 3 to 4 weeks after the end of chemotherapy. Retroperitoneal lymphadenectomy is advocated for every non-seminomatous residual mass more than one cm. 18FDG uptake should be evaluated for each seminoma residual mass more than 3cm.

CONCLUSIONS

A rigorous use of classifications is mandatory to define staging since initial diagnosis. Applying treatments based on these classifications leads to excellent survival rates (99 % in CSI, 85 % in CSII+).

[French ccAFU guidelines - Update 2018-2020: Adrenal cancer]

OBJECTIVE

To update French oncology guidelines concerning adrenal cancer.

METHODS

Comprehensive Medline search between 2016 and 2018 upon diagnosis, treatment and follow-up of adrenal cancer to update 2013 guidelines. Level of evidence was evaluated according to AGREE-II.

RESULTS

Adrenal cancers are mainly represented by adrenocortical carcinomas (AC), malignant pheochromocytomas (MPC) and adrenal metastases (AM). Medical background of these tumors is either the exploration of hormonal or tumor symptoms, or an adrenal incidentaloma. Etiological explorations are based on hormonal biochemical assessment, morphological and functional imaging and histological analysis. AC and MPC are mostly sporadic but hereditary origin is still possible. The suspicion of AC is driven mainly by radiological signs of malignancy, signs of local invasion or distant metastasis, and type of hormonal secretion but the accurate diagnosis is histological. The diagnosis of MPC is clinical, biological and radiological. The diagnosis of MS involves a percutaneous biopsy. Medical files for primitive adrenal cancer should be discussed within the COMETE - Adrenal Cancer Network (Appendix 1). Oncological adjuvant treatments are specific for the histological type. In the AC, their indication depends on the risk of recurrence and is based on mitotane, external radiotherapy or chemotherapy. In the MPC, it is based on internal radiotherapy and chemotherapy. Metastatic forms treatment is exceptionally surgical. Debulking is uncommon. For metastatic unresectable AC, treatment is based on mitotane monotherapy or triple chemotherapy. For metastatic unresectable MPC, treatment is based on exclusive metabolic radiotherapy or triple chemotherapy. Recurrences are frequent and sometimes delayed, which justifies a close and long follow-up.

CONCLUSION

The curative treatment of Adrenal cancers is surgical provided. This treatment is rarely sufficient alone, the prognosis is then pejorative.

RETRACTED: Actualisation 2018–2020 des recommandations françaises du Comité de cancérologie de l’AFU – ÉditorialUpdate 2018–2020 of French ccAFU guidelines – Editorial

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Cet article est retiré de la publication à la demande des auteurs car ils ont apporté des modifications significatives sur des points scientifiques après la publication de la première version des recommandations. Le nouvel article est disponible à cette adresse: doi: 10.1016/j.purol.2019.01.003. C’est cette nouvelle version qui doit être utilisée pour citer l’article. This article has been retracted at the request of the authors, as it is not based on the definitive version of the text because some scientific data has been corrected since the first issue was published. The replacement has been published at the doi: 10.1016/j.purol.2019.01.003. That newer version of the text should be used when citing the article.

RETRACTED: Recommandations françaises du Comité de Cancérologie de l’AFU — Actualisation 2018—2020 : tumeur de la surrénale French ccAFU guidelines — Update 2018—2020: Adrenal cancer

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Cet article est retiré de la publication à la demande des auteurs car ils ont apporté des modifications significatives sur des points scientifiques après la publication de la première version des recommandations. Le nouvel article est disponible à cette adresse: doi:10.1016/j.purol.2019.01.011. C’est cette nouvelle version qui doit être utilisée pour citer l’article. This article has been retracted at the request of the authors, as it is not based on the definitive version of the text because some scientific data has been corrected since the first issue was published. The replacement has been published at the doi:10.1016/j.purol.2019.01.011. That newer version of the text should be used when citing the article.

RETRACTED: Recommandations françaises du Comité de Cancérologie de l’AFU — Actualisation 2018—2020 : tumeurs germinales du testicule French ccAFU guidelines — Update 2018—2020: Testicular germ cell tumors

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Cet article est retiré de la publication à la demande des auteurs car ils ont apporté des modifications significatives sur des points scientifiques après la publication de la première version des recommandations. Le nouvel article est disponible à cette adresse: doi:10.1016/j.purol.2019.01.009. C’est cette nouvelle version qui doit être utilisée pour citer l’article. This article has been retracted at the request of the authors, as it is not based on the definitive version of the text because some scientific data has been corrected since the first issue was published. The replacement has been published at the doi:10.1016/j.purol.2019.01.009. That newer version of the text should be used when citing the article.

RETRACTED: Recommandations françaises du Comité de Cancérologie de l’AFU — Actualisation 2018—2020 : sarcomes rétropéritonéaux French ccAFU guidelines — Update 2018—2020: Retroperitoneal sarcoma

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Cet article est retiré de la publication à la demande des auteurs car ils ont apporté des modifications significatives sur des points scientifiques après la publication de la première version des recommandations. Le nouvel article est disponible à cette adresse: doi:10.1016/j.purol.2019.01.010. C’est cette nouvelle version qui doit être utilisée pour citer l’article. This article has been retracted at the request of the authors, as it is not based on the definitive version of the text because some scientific data has been corrected since the first issue was published. The replacement has been published at the doi:10.1016/j.purol.2019.01.010. That newer version of the text should be used when citing the article.

RETRACTED: Recommandations françaises du Comité de Cancérologie de l’AFU — Actualisation 2018—2020: tumeurs du pénis French ccAFU guidelines — Update 2018—2020: Penile cancer

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Cet article est retiré de la publication à la demande des auteurs car ils ont apporté des modifications significatives sur des points scientifiques après la publication de la première version des recommandations. Le nouvel article est disponible à cette adresse: doi:10.1016/j.purol.2019.01.008. C’est cette nouvelle version qui doit être utilisée pour citer l’article. This article has been retracted at the request of the authors, as it is not based on the definitive version of the text because some scientific data has been corrected since the first issue was published. The replacement has been published at the doi:10.1016/j.purol.2019.01.008. That newer version of the text should be used when citing the article.

[Non-palpable testicular tumors in adults: A management based on imaging? Issue from the French Urologic Association Genital Cancer committee's edit]

BACKGROUND

Help in management of non-palpable testicular tumors. French Urologic Association Genital cancer committee's Edit.

OBJECTIVES

To review their characterization at imaging findings of non-palpable testicular tumors.

DOCUMENTARY SOURCES

Literature review (PubMed, Medline) of urological and radiological studies dealing with testicular tumors using keywords: non-palpable/incidental testicular tumors; color Doppler ultrasound; US elastography; magnetic resonance imaging; contrast enhanced sonography; partial surgery.

RESULTS

Color Doppler is the basic exam. The size, the presence of microlithts/microlithiasis/macrocalcifications, the vascular architecture are major semiological findings to suggest the benign or the malignant nature of the lesion. Other techniques like multiparametric MRI, contrast-enhanced sonography, sonographic elastography are still in evaluation. The frequency of benign tumors such as Leydig cell tumors lead to preservation management, through improved characterization, monitoring or tumorectomy.

LIMITS

Non-randomized study - a very few prospective studies.

CONCLUSION

The era of total orchiectomy for any uncertain testicular lesion is over. We try the challenge of characterization, and define management's algorithms based on the suspected nature of the tumors.

[CCAFU french national guidelines 2016-2018 on penile cancer]

INTRODUCTION

The aim of this work is to establish guidelines proposed by the external genital organ group of the CCAFU for the diagnosis, treatment and follow-up of penile cancer.

MATERIAL AND METHODS

The multidisciplinary working party studied 2013 guidelines exhaustively reviewed the literature, and evaluated references and their level of proof in order to attribute grades of recommandation.

RESULTS

The most common histological type is squamous cell carcinoma. Clinical examination of the penis is usually sufficient to access local extension. It can be completed by MRI to assess deeper extension. Physical examination of both groins must evaluate inguinal regional lymph nodes involvement. In the presence of palpable lymph nodes, abdomen and pelvis computed tomography and ¹⁸F-FDG PET-CT are recommended. Sentinel lymph node biopsy is recommended in the case of penile cancer with high risk of lymph node extension with no palpable lymph nodes. Treatment of the primary tumour is usually surgical. It must be as conservative as possible while ensuring negative surgical margins. Brachytherapy or local treatment can be proposed in some cases. Bilateral inguinal lymph node areas must be systematically treated. Inguinal lymphadenectomy alone has a curative role in patients with metastatic invasion of a single node (stage pN1). In the case of more extensive lymph node involvement, multimodal management combining chemotherapy, surgery, and possibly radiotherapy has to be considered.

CONCLUSIONS

The treatment of penile cancer is usually surgical possibly in combination with chemotherapy in the presence of lymph node extension. The main prognostic factor is lymph node involvement, requiring appropriate management at the time of diagnosis.x © 2016 Elsevier Masson SAS. All rights reserved.

[Management of testicular teratoma: update by the Oncology Committee of the French Urology Association, section of External Genital Organs (CCAFU-OGE)]

INTRODUCTION

The objective of this article was to focus on the pathological, clinical and therapeutic aspects of the different forms of testicular teratoma in adults.

MATERIAL AND METHODS

The multidisciplinary working group has conducted a literature search on Pubmed with keywords: adult teratoma; malignant transformation; growing teratoma; chemotherapy; surgery with focus on the different forms of adult testicular teratoma.

RESULTS

Teratomas of the adults are malignant and subdivided into localized and metastatic forms that may be distinguished under exclusive teratoma form, growing teratoma or teratoma with malignant transformation. The management is based on an enlarged surgical excision (testis and metastasis) with, in metastatic forms, a chemotherapy adjusted with histology. Extended follow-up beyond 10 years is necessary because of the risk of late relapse.

CONCLUSIONS

Testicular teratoma is a rare tumor, which is considered malignant with a potential of metastasis. The treatment is based mainly on surgical management.

[Current state of compensation of on-duty and on-call urologists in France: a study from AFUF]

INTRODUCTION

The French Association of Urologists-in-training (AFUF) aimed to assess the current state of remunerations of on-call and on-duty residents, assistants and lecturers in urology in France.

MATERIAL AND METHODS

Data were collected from February to May 2013 through a questionnaire sent to all members of the AFUF (327 members). Remunerations were given in gross values.

RESULTS

Forty-three residents took part in the study, 16 assistants and 16 lecturers, representing 62 % of the whole centers (54 hospitals out of the 92 centers practicing urology in France). Most of responders were on security or operational on-call. Twenty hospitals were practicing multi-organ removal. Median remunerations of residents were about 59.51€ per on-call when moving at hospital for work and about 119.02€ per onsite duty. Assistants and lecturers were paid a flat fee rate for 37.5 % of them (140€ for assistants [with variability from 40 to 195€] and 130€ for lecturers [42.5-180]) or an hourly rate depending on the hours spent at hospital for the others (62.5 %): first, second move or move<3h were paid 100€ for assistants and 65€ for lecturers, 233.5€ and 236€ respectively for the third one or above 3h, 365€ and 473€ respectively above 8h. Multi-organ removals were paid a flat fee rate (60 %) or an hourly rate (40 %) as well. Beyond a threshold of 2-3hours, the hourly rate was more interesting than the flat fee rate.

CONCLUSION

There were disparities in remuneration of on-call and on-duty urologists. Greater variability affected on-call flat fee rate remuneration beyond a certain threshold of hours and remuneration of multi-organ removal. These disparities should be considered in order to get a national harmonization.

[CCAFU's contribution to the French National Cancer Institute's reference frame: Retroperitoneal sarcomas]

INTRODUCTION

Retroperitoneal sarcomas are rare tumours. The objective of this article is to propose management guidelines.

MATERIAL AND METHODS

A review of the literature was performed using the PubMed search engine (1985-2013) with the key words: retroperitoneal sarcoma, prognosis, recurrence, surgery, radiation therapy, chemotherapy.

RESULTS

Chest, abdomen and pelvis computed tomography is the reference examination. Other examinations are optional. PET scan is not indicated for the primary diagnosis. CT-guided retroperitoneal biopsy is recommended and must be systematically performed before any management of a suspicious retroperitoneal mass. All retroperitoneal sarcomas must be registered and presented to a multidisciplinary consultation meeting devoted to the management of sarcomas (regional meetings) prior to any therapeutic intervention. Treatment is essentially surgical and is primarily designed to achieve negative surgical margins (R0). Neoadjuvant or adjuvant radiotherapy and chemotherapy can be proposed depending on the risk of progression and the resectability. The recurrence rate is related to tumour grade and surgical margins. The final prognosis is intimately related to the quality of initial management and the number of cases treated by each centre.

CONCLUSION

Retroperitoneal sarcomas have a poor prognosis. The quality of initial management directly impacts recurrence-free survival and overall survival. The prognosis is improved by multidisciplinary management conducted in a reference centre.

[CYP17A1 inhibitors in prostate cancer: mechanisms of action independent of the androgenic pathway]

INTRODUCTION

The objective of this article is to review the mechanisms of action of abiraterone acetate, independently of the androgenic pathway.

MATERIAL AND METHOD

A systematic review of the literature was carried out on Medline and Embase databases.

RESULTS

Inhibition of CYP17A1 with abiraterone acetate induces changes in steroid metabolism, whose main component is the reduction of DHEA and androstenedione synthesis. This results in inhibition of androgen pathway in prostatic cancerous epithelial cell. Regardless of androgen activation pathway, abiraterone acetate could also act via an alternative mechanism of action not fully elucidated. Stromal cells, like tumor cells, could undergo the effects of CYP17A1 inhibition, resulting in blocking the production of secondary mediators that contribute to tumor progression. Similarly, it has been suggested that abiraterone acetate efficacy may be related to its ability to alter intratumoral concentrations of estrogen and progesterone.

CONCLUSION

The validation of these mechanisms could contribute to improved therapeutic strategies based on the use of abiraterone acetate alone or in combination.