[Helicobacter pylori. Its relationships and morphological controversies]. / Helicobacter pylori. Sus relaciones y controversias morfológicas.

After Helicobacter pylori was described in 1984, it has been related to numerous benign and malignant morphological disturbances. The distribution of the gastroduodenal disease, their histological expressions and their controversial topics regarding their relationship with HP are better known today. The aim of this paper is review some of these features.

[Risk of breast cancer of low differentiation in tumors with estrogen-negative receptors]. / Riesgo de carcinoma mamario poco diferenciado en tumores con receptores de estrógeno negativos.

The risk for poorly differentiated invasive ductal carcinoma was evaluated in negative estrogen receptor tumors determined by immunohistochemical method. The results were correlated with the histological grade. The poorly differentiated tumors had a major risk (OR = 17.8) to be negative. A high risk of correlation was found between the estrogen receptor positivity and the well differentiated tumors (grade I), p = .0001. Our results are similar to other previous reports. The usefulness of this findings and its occasional role when it was not possible the determination of this receptor for lacking economical or technological resources is discussed.

[Genital actinomycosis caused by the use of intrauterine devices. Report of 2 cases]. / Actinomicosis genital asociada al uso de dispositivo intrauterino. Informe de dos casos.

PIP: 2 patients aged 31 and 35, multiparous, and wearer of a Dalkon Shield IUD for a period of 3-5 years, were hospitalized for bilateral tubo-ovarian actinomicosis. Both patients were surgically treated, and in both cases there were necrotic materials. An adequate diagnosis of actinomycosis would be incomplete without careful citological examinations of cervico-vaginal exudations. It is also important to stress that any type of IUD should not be worn for longer than 2 years. The article presents a review of the published literature on the subject.^ieng

[Dermatomyositis and adenosquamous carcinoma of the ovary. Report of a case]. / Dermatomiositis y carcinoma adenoescamoso del ovario. Informe de un caso.

A case of adenosquamous ovarian carcinoma in a 50 years old female is reported. The patient had marked improvement of her symptoms after resection of the tumor and chemotherapy. The knowledge of this association forces to rule out an ovarian carcinoma.

[Spinal primitive neuroectodermal tumor]. / Tumor neuroectodérmico primitivo espinal.

The term primitive neuroectodermal tumor (PNET) names a group of malignant neoplasms of presumed neural crest origin; they are composed of round small cells, and may be centrally located or outside. The former are currently seen in childhood, mostly in reference to the posterior fossa, and include medulloblastoma and neuroblastoma. Outside of the central nervous system includes peripheral neuroectodermal tumor of the bone (PNET-B, Tefft's tumor), Askin's tumor, and even Ewing's sarcoma. We describe a case in a young adult, with extremely unusual spinal localization, in which histopathological and immunohistochemical analysis were done; also, a review of some features is presented clinical-histopathological issues concerning related.

Hamartoma mesenquimatoso hepatico de la infancia. / Mesenchymal hamartoma of the liver in childhood

Se informan las caracteristicas clinopatologicas de cinco pacientes con hamartoma mesenquimatoso hepatico, estudiados en los Servicios de Cirugia y Patologia del Hospital de Pediatria del Centro Medico Nacional del IMSS. Esta entidad se presento generalmente en los dos primeros anos de la vida y clinicamente se manifesto por crecimiento del hemiabdomen superior. Los estudios radiograficos fundamentales para establecer el diagnostico fueron la arteriografia y ecosonografia. El tratamiento fue quirurgico con buena evolucion. Hasta 1980 se han comunicado 30 casos en la literatura mundial/

Condroma primario del ovario. Informe de un caso. / Primary chondroma of the ovary. A case report

Se informa el primer caso de una neoplasia benigna primaria del ovario constituida exclusivamente por cartilago. La lesion se desarrollo en el ovario izquier, midio 15 cm de diametro y mostro atipias celulares ocasionales sin mitosis.La paciente se encuentra sin actividad neoplasica despues de 5 anos de haber sido intervenida quirurgicamente