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J C Alvarez Fernández

Publications and source records attributed to J C Alvarez Fernández.

5 recordsLinked to original sources
PubMed2004

[Giant retroperitoneal cystic mass: appendiceal mucocele].

Appendiceal mucocele is a term used to describe the dilatation of the vermiform appendix produced by an intraluminal accumulation of mucus. Four pathological processes have been described that may lead to an appendiceal mucocele: obturation of cecoappendiceal communication, mucosal hyperplasia, mucinous cystadenoma and mucinous cystoadenocarcinoma. The most frequent is mucinous cystadenoma, seen in 50% of appendiceal mucoceles. 6% of patients with appendiceal mucocele develop peritoneal pseudomixoma, possibly through dissemination of the epithelial cells into the abdominal cavity. Preoperative diagnosis of the lesion is particularly important in order to deal with it carefully during surgery. CT scan is the most precise radiological exploration, although there are no pathognomonic signs of mucocele. Typical CT finding of a mucocele is a well-defined cystic mass that compresses the cecum without any peripheral inflammatory reaction, and with low levels of attenuation that vary between water and soft tissue density. We present a case of an appendiceal mucocele caused by a mucinous cystadenoma clinically presented as a giant retroperitoneal mass. Diagnosis was postoperatively made, after pathological study of the surgical sample.

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[Iatrogenic rupture of the ureter following extracorporeal shock wave lithotripsy].

Extracorporeal shock wave lithotripsy is the treatment of choice in most cases of urinary calculi, with the estimation that open surgery is only necessary in 5% of all cases. In most cases, the complications derived from this technique are slight, transitory and of little clinical importance, with isolated cases of serious urological or extraurological injury. These complications are either caused by the action of the stone itself or its fragments, or by the action of shock waves. We present a case of ureteral rupture following treatment of a ureteral calculus using extracorporeal shock wave lithotripsy which led to a periureteral retroperitoneal abscess that was treated by nephroureterectomy.

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PubMedDate not supplied

[Prostate cancer diagnosis using 24 cores extended biopsy].

OBJECTIVE: To determine the diagnostic performance of extended prostatic biopsy (PB) in prostate cancer (PC) and variables affecting positivity. MATERIALS AND METHODS: Patients (n = 147) underwent 24 cylinder PB at the Arquitecto Marcide Hospital, Ferrol, La Coruña, between December 2002-September 2004. Inclusion criteria were the following: patients aged < or = 70 with one or more negative PB or aged < or = 75 with two or more negative PB. An univariate analysis was carried out using the chi-squared test for the qualitative variables and the t-Student and U Mann-Whitney tests in the case of the quantitative variables, plus a logistical regression analysis in order to identify those variables related to the extended PB positivity. RESULTS: 60 patients (40.82%) were identified as having PC. Significant differences were observed in prostatic volume, free/total PSA ratio in the initial PB, free/total PSA ratio in the extended PB, PSA-density in the extended PB as well as the existence of chronic prostatitis in previous PB. During the multivariate analysis it was found that the PSA-density and the presence of chronic prostatitis in previous PB independently predicted the positivity of the extended PB. CONCLUSIONS: Extended PB allows for the detection of PC in 40.82% of patients with previous negative PB. The increase in PSA density is associated with a greater probability of PC, whilst the existence of chronic prostatitis in prior PB significantly reduces the probability of PC in the extended PB.

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