Seminal vesicle epithelium as a potential pitfall in the cytodiagnosis of presacral masses. A report of two cases.

BACKGROUND: Whenever abdominoperineal resection is performed because of a rectal adenocarcinoma, the prostate and seminal vesicles may be displaced backward to the presacral space, giving rise to a false radiologic image of a presacral tumor. Due to cytologic atypia associated with the epithelium of seminal vesicles, there is a real possibility, in fine needle aspiration biopsy (FNAB), of erroneously giving a malignant diagnosis. CASES: Two men, aged 53 and 57 years, presented with presacral masses three months and six years, respectively, after abdominoperineal resection for rectal adenocarcinoma. In both cases, FNAB smears showed some groups and single cells with large and irregular nuclei. These cells suggested a recurrence of carcinoma. The presence of cytoplasmic coarse pigment and a background with spermatozoa and blobs of inspissated secretory product were sufficient to determine that these presacral masses represented the seminal vesicles. CONCLUSION: Awareness that seminal vesicles may give rise to a radiologic impression of presacral tumor after abdominoperineal resection of the rectum will avoid unnecessary FNAB and a cytologic false positive diagnosis of colorectal adenocarcinoma.

[Percutaneous treatment of retroperitoneal abscesses]. / Tratamiento percutáneo de los abscesos retroperitoneales.

UNLABELLED: The retroperitoneal abscess is an uncommon disease, that must be treated by drainage. The progressive use of the percutaneous drainage, under ultrasound or computed tomography guidance (CT), has changed the therapeutical management and has demonstrated to be a valid alternative to surgical drainage. From 1986 to 1998, 16 patients with retroperitoneal abscesses were treated by percutaneous drainage (14 with CT and 2 with ultrasound guidance). This method eradicated the abscess in 13 cases, in 2 was necessary a new function to cure the abscess, and 1 patient, with a severe sepsis, died. Percutaneous drainage was the unique treatment used in 12 patients. In the remaining four, the patients' clinical status improved after percutaneous drainage, and they were able to undergo subsequent elective nephrectomy. CONCLUSIONS: Percutaneous drainage of retroperitoneal abscesses has been established as a viable alternative to surgical intervention. This method can resolve the abscess or improve the patient' clinical status to undergo elective surgery.

Tratamiento percutáneo de los abscesos retroperitoneales / Percutaneous drainage of retroperitoneal abscesses

El absceso retroperitoneal es una entidad clínica poco frecuente, cuyo tratamiento se basa en el drenaje. La introducción progresiva de las técnicas percutáneas de drenaje, bien mediante control ecográfico o bien utilizando la tomografía axial computerizada (TAC), ha modificado su abordaje terapéutico, siendo alternativas válidas al tratamiento quirúrgico tradicional. Presentamos una serie de 16 pacientes diagnosticados de absceso retroperitoneal entre 1986 y 1998, que fueron tratados mediante punción percutánea (en 14 casos dirigida por TAC y en 2 median-te control ecográfico). Se consiguió la resolución del absceso en 13 casos, recurriendo en 2 (ambos fueron tratados mediante nueva punción) y falleciendo 1 paciente que presentaba una sepsis grave. En 12 de los pacientes fue el único tratamiento aplicado, practicándose en los 4 restantes nefrectomía tras la mejoría del estado de los pacientes. CONCLUSIONES: El tratamiento percutáneo de los abscesos retroperitoneales supone una alter-nativa válida al tratamiento quirúrgico tradicional, bien como tratamiento definitivo, bien como tratamiento paliativo que nos permite mejorar el estado clínico del paciente de forma previa a la cirugía (AU)