[Epithelioid hemangioendothelioma localized in the small intestine]. / Hemangioendotelioma epitelioide localizado en intestino delgado.

Epithelioid hemangioendothelioma is a unique tumor of adult life which is characterized by epithelioid or histiocytoid endothelial cells. These tumors are rare, and developed preferentially in the dermis and subcutaneous tissues of the distal extremities. They grow in a slowly progressive fashion, have a borderline biological behavior, and a good response to surgical treatment. The authors present a 63-years-old woman with an epithelioid hemangioendothelioma localized in small intestine. The patient had a history of abdominal pain and recurrent rectal bleeding being surgically treated.

[Relationship between a benign fibroepithelial polyp and a pelvic nephroblastoma: report of a case]. / Relación entre un pólipo fibroepitelial benigno y un nefroblastoma piélico: a propósito de un caso.

The purpose of this paper is to report one case of left pyelic Wilms' tumour in a 17-year old male patient. Pre-operative diagnosis was complicated by a background of prior surgery on the same kidney due to a benign fibroepithelial polyp. The possible concomitences are analyzed while the relevance of an extensive pathoanatomical study to avoid possible diagnostic errors is emphasized.

Idiopathic adulthood ductopenia: a diagnosis: two clinicopathologic courses.

Idiopathic adulthood ductopenia is a chronic cholestatic entity of unknown origin that was discovered in the past decade. Although it is classically a progressive and severe disease, a benign and responsive-to-therapy form has been reported recently. We present two middle-aged females that represent the extremes of the clinicopathologic spectrum: One with a severe form of the disease for whom liver transplantation was considered and the other with a benign form.

[Identification of factors conditioning urinary cytology in bladder cancer]. / Identificación de los factores que condicionan la citología urinaria en el cáncer vesical.

OBJECTIVES: To identify the clinical and tumoral aspects related with urinary cytology as a means of validating current criteria or determining the usefulness of this test in the diagnosis of bladder tumors. METHODS: 96 patients that were posteriorly diagnosed as having primary transitional cell carcinoma of the bladder were initially evaluated by urinary cytology. The diagnoses were positive, negative or inconclusive cytology. Any abnormality (for both inconclusive and positive cytologies) were considered as compatible with tumor. To determine the relationship between patient characteristics and tumors, and the results of cytology, standard univariate statistical analysis was performed. To eliminate the confounding factors, a multivariate analysis was performed. RESULTS: Cytology was positive on 44 (45.8%), inconclusive on 22 (23%) and negative on 30 (31.2%) occasions. Age > or = 55 years (p < 0.05), grade (p < 0.05), tumor aspect (p < 0.01) and size (p < 0.001) were associated with a higher frequency of cytologies compatible with tumor. Multiple regression analysis identified tumor size as the only independent variable related with the cytologies compatible with tumor [odds ratio = 8.68 (2.7-26.9)]. CONCLUSIONS: If, as the results of the present analysis suggest, the real effect of cytological analysis in the initial diagnosis of bladder tumors is the anticipation of different features of tumor grade and stage (as patient age, tumor size, aspect and number), its utility would be very limited since other more precise tests (US, cystoscopy...) that provide this information are available.