[Validity of tests for initial diagnosis and its concordance with final diagnosis in patients with suspected benign prostatic hyperplasia]. / Validez de las pruebas utilizadas en el diagnóstico inicial y su concordancia con el diagnóstico final en pacientes con sospecha de hiperplasia benigna de próstata.

OBJECTIVE: To assess the validity of diagnostic tools available at the primary care setting [medical history (MH), I-PSS questionnaire, digital rectal examination (DRE) and prostate specific antigen (PSA) evaluation] for the diagnosis of benign prostatic hyperplasia (BPH). SUBJECTS AND METHODS: 363 patients with suspected prostatic disease referred to urology outpatient clinics were included. For every subject initial BPH diagnosis was collected at each of the following sequential procedures: 1) MH; 2) I-PSS; 3) DRE; and 4) PSA. Each of these diagnostic decisions were compared to a final diagnosis (gold standard) reached after the addition of urinary sediment analysis, ultrasonographic assessment of residual volume and prostatic volume, and peak urinary flow measurement. A descriptive analysis was undertaken: validity and concordance between each diagnostic step and the gold standard was calculated. RESULTS: Sensitivity, specificity, positive predictive value, and negative predictive value of diagnosis based on MH+I-PSS+DRE+PSA with respect to the gold standard were 91%, 65%, 95% and 50%, respectively. The percentage of agreement and kappa index between both diagnostic strategies were 87.9% and 0.5, respectively. CONCLUSIONS: Concordance between BPH initial diagnosis based on MH+I-PSS+DRE+PSA and diagnosis based on a full range of tests was high, thus allowing recommending the use of this group of initial diagnostic procedures, which are available to the primary care physician, not only as a first diagnostic step in patients with suspected BPH, but also as a valid strategy to prevent unnecessary delay in its initial management and to facilitate appropriate referral from primary to specialized care.

Validez de las pruebas utilizadas en el diagnóstico inicial y su concordancia con el diagnóstico final en pacientes con sospecha de hiperplasia benigna de próstata / Validity of tests for initial diagnosis and its concordance with final diagnosis in patients with suspected benign prostatic hyperplasia

Objetivo: Determinar la validez de los métodos diagnósticos al alcance del primer escalón del nivel asistencial [historia clínica (HC), cuestionario I-PSS, tacto rectal (TR) y determinación del antígeno prostático específico (PSA)], para el diagnóstico de la hiperplasia benigna de próstata (HBP). Población y Métodos: Participaron 363 pacientes atendidos en consultas externas de urología por sospecha de HBP. El diagnóstico inicial de HBP se fue realizando tras la aplicación secuencial de cada una de las siguientes pruebas: 1) HC 2) I-PSS 3) TR y 4) PSA. El diagnóstico emitido tras cada uno de los 4 pasos, se contrastó con el diagnóstico final (gold standard) tras la evaluación de sedimento urinario, volumen miccional residual y tamaño prostático por ecografía y flujometría urinaria. Se realizó un análisis descriptivo y se calculó la validez y concordancia entre cada paso diagnóstico y el gold standard. Resultados: La sensibilidad, especificidad, valor predictivo positivo y valor predictivo negativo del diagnóstico basado en HC+IPSS+ TR+PSA con respecto al diagnóstico final fueron 91%, 65%, 95% y 50% respectivamente. El porcentaje de acuerdo y el índice kappa entre ambos diagnósticos fueron 87,9% y 0,5, respectivamente. Conclusiones: La concordancia entre el diagnóstico inicial basada en la historia clínica, cuestionario I-PSS, TR y PSA, y el diagnóstico final de HBP es alta, lo que permite recomendar el uso del conjunto de estas pruebas accesibles en el primero de los escalones asistenciales no sólo como primer paso diagnóstico en los pacientes con sospecha de HBP, sino también como estrategia válida para evitar retrasos innecesarios en su manejo inicial y facilitar la adecuada derivación entre los niveles de atención primaria y especializada

Objective: To assess the validity of diagnostic tools available at the primary care setting [medical history (MH), I-PSS questionnaire, digital rectal examination (DRE) and prostate specific antigen (PSA) evaluation] for the diagnosis of benign prostatic hyperplasia (BPH). Subjects and Methods: 363 patients with suspected prostatic disease referred to urology outpatient clinics were included. For every subject initial BPH diagnosis was collected at each of the following sequential procedures: 1) MH; 2) I-PSS; 3) DRE; and 4) PSA. Each of these diagnostic decisions were compared to a final diagnosis (gold standard) reached after the addition of urinary sediment analysis, ultrasonographic assessment of residual volume and prostatic volume, and peak urinary flow measurement. A descriptive analysis was undertaken; validity and concordance between each diagnostic step and the gold standard was calculated. Results: Sensitivity, specificity, positive predictive value, and negative predictive value of diagnosis based on MH+IPSS+ DRE+PSA with respect to the gold standard were 91%, 65%, 95% and 50%, respectively. The percentage of agreement and kappa index between both diagnostic strategies were 87.9% and 0.5, respectively. Conclusions: Concordance between BPH initial diagnosis based on MH+I-PSS+DRE+PSA and diagnosis based on a full range of tests was high, thus allowing recommending the use of this group of initial diagnostic procedures, which are available to the primary care physician, not only as a first diagnostic step in patients with suspected BPH, but also as a valid strategy to prevent unnecessary delay in its initial management and to facilitate appropriate referral from primary to specialized care

[Clinical usefulness of free PSA/total PSA ratio in the early diagnosis of prostatic cancer]. / Utilidad clínica de la ratio PSA libre/PSA total en el diagnóstico precoz del cáncer de próstata.

OBJECTIVES: To determine the clinical utility of free/total PSA ratio and PSA density in the early diagnosis of prostate cancer (patients with serum PSA between 4 and 10 ng/ml) and to determine the differences, if any, in the free/total PSA ratio in patients with cancer and those with benign prostatic hyperplasia (BPH). METHODS: A prospective and descriptive study was conducted on 61 patients with low grade obstructive symptoms and total serum PSA between 4 and 10 ng/ml (group 1), and 42 patients who underwent prostate surgery and had an anatomopathologically confirmed diagnosis of BPH (group 2). Free and total PSA were determined, as well as prostate volume by transrectal US, in all cases. Prostate biopsy was performed in all patients with a total PSA value between 4-10 ng/ml. The sensitivity, specificity, positive and negative prognostic values of free/total PSA ratio and PSA density were analyzed. RESULTS: The mean age of the patients in group 1 was 67.7 years and 68.3 years in group 2. The mean prostate volume by US was 55.2 and 47.1, respectively (n.s.). The mean total PSA was 6.39 ng/ml for group 1 and 5.73 ng/ml for group 2 (n.s.). No significant difference was found between the mean free PSA values of both groups. However, the free/total PSA ratio and PSA density were significantly different (p < 0.000). In group 1 (total PSA 4-10 ng/ml), prostate biopsy was positive in 32.8% of the patients. In this group of patients, there were no significant differences in the parameters analyzed. Application of different cutoffs for both tests showed a higher clinical utility for the 0.24-0.30 range. CONCLUSIONS: At similar mean prostate volume and mean total PSA, significant differences were found in the free/total PSA ratio and PSA density of patients submitted to surgery for BPH and those with a total PSA value of 4-10 ng/ml. However, these results were not observed when patients with PSA of 4-10 ng/ml were analyzed for presence or absence of evidence of malignancy in the prostate biopsy.

[Paratesticular rhabdomyosarcoma. Report of a case and review of the literature]. / Rabdomiosarcoma paratesticular. Aportación de un caso y revisión de la literatura.

Case report of an embryonary paratesticular rhabdomyosarcoma. The paper includes a literature review and discusses the current diagnostic, prognostic and therapeutic criteria analyzing in detail the current role of retroperitoneal lymphadenectomy and the value of adjuvant radiotherapy or chemotherapy.