Clinical Usefulness of Prostate-specific Membrane Antigen-ligand Positron Emission Tomography/Computed Tomography for the Detection of Prostate Cancer Biochemical Recurrence after Primary Radiation Therapy in Patients with Prostate-specific Antigen Below the Phoenix Threshold: Systematic Review and Meta-analysis.

AIMS: After primary radiotherapy, biochemical recurrence is defined according to the Phoenix criteria as a prostate-specific antigen (PSA) value >2 ng/ml relative to the nadir. Several studies have shown that prostate-specific membrane antigen (PSMA)-ligand positron emission tomography/computed tomography (PET/CT) can help in detecting recurrence in patients with low PSA values. This study aimed to assess the detection rate and patterns of PSMA-ligand PET/CT uptake in patients with suspected biochemical recurrence after primary radiotherapy and with PSA levels below the Phoenix threshold. MATERIALS AND METHODS: The meta-analysis was carried out in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. Articles providing data on patients with suspected prostate cancer recurrence after primary radiotherapy with a PSA value below the Phoenix threshold and who underwent PSMA-ligand PET/CT were included. Quality assessment was carried out using the Quality Assessment of Diagnostic Accuracy Studies-2 tool (QUADAS-2). RESULTS: In total, five studies were included, recruiting 909 patients (202 with PSA ≤2 ng/ml). The PSMA-ligand detection rate in the patients with ≤2 ng/ml ranged from 66 to 83%. The most frequent source of PSMA-ligand PET/CT uptake was local recurrence, followed by lymph node metastasis and bone metastasis. PSMA-ligand PET/CT uptake due to local-only recurrence was more likely in patients with PSA ≤2 ng/ml compared with PSA > 2 ng/ml: risk ratio 0.72 (95% confidence interval 0.58-0.89), P = 0.003. No significant differences were observed in the detection of PSMA-ligand uptake in other areas. Limitations include a lack of biopsy confirmation, cohort reports with small sample sizes and a potentially high risk of bias. CONCLUSION: A significant detection of PSMA-ligand-avid disease was observed in patients with PSA levels below the Phoenix threshold. There was a higher likelihood of detecting local-only uptake when the PSA value was ≤2 ng/ml. The findings suggest that a critical review of the Phoenix criteria may be warranted in the era of PSMA-ligand PET/CT and highlight the need for further prospective trials.

Cryotherapy versus high-intensity focused ultrasound for treating prostate cancer: Oncological and functional results. / Crioterapia frente a high intensity focused ultrasound en el tratamiento del cáncer de próstata: resultados oncológicos y funcionales.

CONTEXT AND OBJECTIVE: The increasingly early diagnosis of prostate cancer requires a search for therapeutic alternatives with good oncological results that in turn facilitate a good long-term quality of life. This review analyses 2 minimally invasive therapies for treating localised prostate cancer in terms of oncological and functional results, as well as the complications resulting from the therapies. ACQUISITION OF EVIDENCE: A systematic literature review was conducted of the treatment of localised prostate cancer with 2 ablative techniques as the primary therapy: cryosurgery or cryotherapy and high intensity focused ultrasound (HIFU). We included patients who underwent procedures that included the entire gland, with hemiablation or focal therapy, which were indicated for low to intermediate-risk prostate cancer according to the D'Amico criteria. We excluded patients with high-risk prostate cancer and those who underwent any prior treatment for prostate cancer. SYNTHESIS OF THE EVIDENCE: After conducting the literature search and excluding the studies that did not meet the protocol criteria, we reviewed a total of 14 studies, with a total of 350 patients treated using cryotherapy and 1107 treated with HIFU. All studies were either prospective or retrospective and were not randomised. The patients' mean age was younger than 75 years. Overall, the rate of disease recurrence in the patients treated with cryotherapy varied between 13.2% and 26%, while the rate for those treated with HIFU varied between 7.3% and 67.9%. The overall demonstrated continence at 12 months was 97.6-100% for cryotherapy and 96-100% for HIFU. In terms of sexual potency rates, cryotherapy showed complete potency at 12 months for 86-100% of the patients treated with focal cryotherapy and slightly lower rates for hemiablation (76.9-100%) and total therapy (39%). HIFU showed potency rates of 89%, 52-80% and 33-78% for focal therapy, hemiablation and total therapy, respectively. CONCLUSIONS: Both techniques have comparable functional results, although the somewhat poorer oncological results for HIFU reflect a steeper learning curve, which could lead to its use in centres with high volumes of patients.

Long-term outcome of a phase II study of weekly docetaxel with a short course of estramustine and enoxaparine in hormone-resistant prostate cancer patients.

OBJECTIVE: The objective was to define the toxicity and activity of weekly docetaxel administered with a short course of estramustine and enoxaparine in patients with hormone-resistant prostate cancer (HRPC). PATIENTS AND METHODS: Twenty-four patients were treated with the next regimen: weekly docetaxel 36 mg/m(2) iv for three consecutive weeks every 28 days, and estramustine 280 mg three times a day for three consecutive days beginning the day before docetaxel (days 1-3, 8-10 and 15-17). In order to prevent thromboembolic events, 40 mg of subcutaneous enoxaparine was administered daily sc on the same days as estramustine. Primary endpoints were: toxicity, especially the presence of thromboembolic events, PSA response rate and response in measurable disease. Secondary endpoints were: time to PSA progression and overall survival. RESULTS: Nineteen of 24 patients (79.1%, 95% CI 71-87%) had a PSA response = or >50%. Four of the eleven patients with measurable disease had a partial response. The median time to PSA progression was 7 months (CI 95%: 6.5-9) and the median survival was 19 months (IC 95%: 11-24). Toxicity was manageable with no treatment- related mortality. Only two patients had grade 4 neutropenia. Two patients had thrombotic events, one deep venous thrombosis and one stroke. The main grade 3 non-haematologic toxicity was diarrhoea and asthenia, both in 25% of patients. CONCLUSIONS: Weekly docetaxel with a short course of estramustine and enoxaparine is active and tolerable in HRPC patients. The observed incidence of thrombosis was lower than previously reported but the association of enoxaparine was not enough to completely prevent the thromboembolic events.

[Renal synchronous tumor: association of renal adenocarcinoma and transitional tumor of renal pelvis, in the same kidney, an exceptional discovery]. / Tumor sincrónico renal: asociación de adenocarcinoma renal y tumor transicional de pelvis renal, en el mismo riñón, un hallazgo excepcional.

The renal cell tumour supposes 1% of the adult's tumors, while the transitional carcinoma has an incidence of 7%. The simultaneous appearance of a carcinoma of renal cells, and a transitional tumour of pelvis in the same kidney, they suppose an exceptional fact not existing but of 30 cases published in the world, presenting an approximate incidence of 0.14% of the pathology renal tumoral. We present a new case of this unusual association that supposes the 4 case indexed in the literature in Spanish.

[Benign retroperitoneal schwannoma. Incidental diagnostic in patient with hematuria of the percusionist]. / Schwannoma retroperitoneal benigno. Diagnostico incidental en paciente con hematuria del percusionista.

The incidence of retroperitoneal primitive tumour varies from the 0.3 to 3%. The sarcomas suppose the group but it frequents of retroperitoneal tumour, being the Schwannoma an unusual tumour with an incidence from 1% to 50% of the retroperitoneal primary tumours. The schwannoma also denominated neurinoma or neurolenoma, it is a derived tumour of the cells of Schwann of the outlying nerves. It is characterized by their clinical and radiological inespecify, being the diagnose pathological, with intense positive inmunohistoquimics to the protein S-100. The election treatment is the surgical remove, with wide margins; not being described cases of malignización neither of metastasis at distance, but if the recurrence existence at probably secondary local level to incomplete resection.

[Repetition of ultrasonography-guided prostatic biopsy for the detection of cancer. Study of a series of 192 re-biopsied patients]. / Repetición de la biopsia prostática ecodirigida para la detección de cáncer. Estudio de una serie de 192 pacientes re-biopsiados.

PURPOSE: We reviewed the result of transrectal ultrasound (TRUS)-guided needle biopsies to find the re-biopsy criteria, emphasizing on the Focal Glandular Atypia (FGA) histological changes. MATERIAL AND METHOD: 192 cases were selected, from a total of 1957 patients older than 50, re-biopsied because of high PSA levels and/or abnormal DRE, or because of the histological findings on initial biopsies (high grade PIN and/or FGA). The results are related to the serum PSA levels and DRE characteristics. RESULTS: A 38.83% global positivity for cancer was obtained and 27.08% for re-biopsy. When the first biopsy was negative, the positivity of the re-biopsies was 19.37%; if it was negative for cancer but had high grade PIN and/or FGA changes, the positivity was 65.62%, being higher in FGA changes than in the PIN cases (68.00% vs. 57.14%). The abnormal DRE raised the positivity rate from 17.82% to, 35.75%. CONCLUSIONS: The positivity was especially related to abnormal DRE and/or PSA > or = 10 ng/ml. The tumor rate detected at second and third or successive biopsies was similar (19.28% vs 21.74%). The FGA changes (3.47% globally) had a cancer predictive value of 65.62%. We recommend re-biopsy in all patients with FGA changes.

[Primary testicular lymphoma. Report of a new case and review of the literature]. / Linfoma testicular primario. Aportación de un nuevo caso y revisión de la literatura.

Primary testicular lymphoma is an uncommon testicular tumour that accounts for no more than 9% of all testicular tumours in those series with higher incidence; testicular lymphoma as haematopoietic tumours are also rare accounting for just 1% of all lymphomas; but due to their highly malignant histopathology they may become highly aggressive tumours. Patient age at presentation is over 60 years old which makes it the most frequent tumour for this age group. There is no standard protocol to treat this malignancy due to lack of extensive series. We contribute one case and make a literature review discussing the current therapeutic trends for this disease.

[Sarcomatoid carcinoma of the kidney. Report of a new case and review of the bibliography]. / Carcinoma sarcomatoide de riñón. Aportación de un nuevo caso, y revisión de la bibliografía.

We report a new case of sarcomatoid renal cell carcinoma, in a male of 67 years old, with locoregional recidive four months after first surgery, with two episodes of retroperitoneal hemorrhage after second surgery. The objective of this work is to contribute a new case and of doing one revision.

[Echo-guided transrectal biopsy. An analysis of the results in a series of 1900 patients]. / Biopsia transrectal ecodirigida. Análisis de los resultados en una serie de 1900 pacientes.

OBJECTIVE: To compare the results of US-guided transrectal biopsy in 1,900 patients with the diagnostic yield of DRE, transrectal US, PSA, PSA density and free PSA/total PSA ratio and to describe our approach based on the results of the comparative study. METHODS: Over the last two years 1,900 patients have undergone biopsy; 4 to 6 specimens were obtained randomly from both prostatic lobes and areas identified by transrectal US and/or DRE as being suspicious. All patients underwent transrectal US, DRE and determination of serum total PSA and PSA density. Free PSA and free PSA/total PSA ratio were determined in 128 patients with PSA 4-10 ng/ml. Seventy had a second biopsy, 8 a third and 3 had a fourth biopsy. RESULTS: The overall diagnostic yield was 40%. Biopsy was positive in 27% of patients with PSA 4-10 ng/ml; of these, 64% showed a positive DRE, 21% showed a negative DRE and 13% were negative for both DRE and transrectal US. DRE was positive in 32% of patients with PSA greater than 10 ng/ml, 39% of those with PSA 10-20 ng/ml and 62% of those with PSA greater than 20 ng/ml; transrectal US was positive in 58% of patients with PSA 10-20 ng/ml and in 77% of those with PSA greater than 20 ng/ml. A high specificity was found for both DRE and transrectal US. In patients with PSA 4-10 ng/ml, PSA density at a cutoff of 0.15 ng/ml/cc showed a sensitivity of 81% and a specificity of 20%, respectively. A second biopsy was positive in 20% of patients with a persistently elevated PSA and the incidence of tumors theoretically of little importance was 13%. CONCLUSIONS: Patients aged less than 70 years whose general condition permit aggressive treatment of prostate cancer should undergo US-guided transrectal biopsy if PSA is greater than 4 ng/ml, regardless of DRE and ultrasound findings. PSA less than 20 ng/ml, PSA density and free PSA/total PSA ratio must be considered for a second biopsy. Sextant biopsy appears to have a good diagnostic accuracy and does not require taking additional specimens or including the transitional zone in the first biopsy. Before classifying a tumor as being of little importance on the basis of the biopsy findings, another biopsy must be performed.