[Intramedullary schwannomas. Report of two cases]. / Neurinomas intramedulares. Presentación de dos casos de un tumor infrecuente.

Intramedullary schwannomas are benign tumors that arise from clusters of Schwann cells embedded in the medullary parenchyma. They are very rare and account for 0.3 to 1.5 % of all spinal schwannomas. It is not known for certain why this happens, and several theories have been put forward. They do not exhibit any characteristic clinical picture, being pain the most frequent symptom. Imaging is also not specific and the correct diagnosis is attained most of the times after pathological examination. The goal of treatment must be complete removal, which is curative. We are presenting two patients in whom an intramedullary tumor was removed. The true nature of the lesions was suspected during the operation, but only after pathological examination was confirmed. A review of the literature has been undertaken, with special attention to the theories about the origin of these uncommon tumors.

[Laryngeal tuberculosis masquerading as carcinoma. Report of one case and literature review]. / Tuberculosis laríngea simulando carcinoma. Presentación de un caso y revisión de la literatura.

Since the introduction of antituberculous medications, the incidence of laryngeal tuberculosis (LTB) has decreased. However, it is a fact the increasing number of cases of pulmonary or extrapulmonary TB mainly caused by the Acquired Immunodeficiency Syndrome. We report the clinical case of a 72 years old male with dysphonia secondary to LTB which masqueraded a carcinoma. It's certain diagnosis was the histopathologic exam of the biopsy obtained by microsurgery. There was a residual TB in lung after a complete study of Internal Medicine Department.

[Gastric bezoar]. / Bezoar gástrico.

Bezoar consist of the accumulation of different substances in the digestive tract. We present the clinical case of a girl with gastric trichobezoar discovered in a postoperatory follow-up to an appendicectomy. Ultra-sound images and oesophagus-gastric transit are fundamental points in the diagnosis. Endoscopy was useful in confirming the diagnosis and in ruling out associated ulcus, frequent in these patients. Surgical treatment is the choice in big bezoar but laser, prokinetics and enzymatic dissolutions have also been used. Theses patients should undergo psychological control.

[Transitional-cell bladder tumor in childhood]. / Tumor de células transicionales de vejiga en edad pediátrica.

Tumors of transitional cells of the bladder are unusual in children under fourteen. Characteristics of these tumors to be highlighted are their usual presentation through macroscopic hematuria, as well as the existing controversy about the anatomicopathologic diagnosis along with the generally good prognosis of these tumors, although they need an appropriate follow-up due to some described cases of relapses and even death.

[Epididymal malacoplakia in a heart transplant recipient: clinico-pathologic study of a case]. / Malacoplaquia epididimaria en un paciente con trasplante cardíaco: estudio clínico-patológico de un caso.

OBJECTIVES: An unusual case of malacoplakia is described and the literature reviewed. METHODS/RESULTS: We report on a patient on immunosuppression due to heart transplantation who developed malacoplakia of the epididymis. Patient history and treatment are discussed, with special reference to the differential diagnosis between this condition and tumors.

Quiste epidermoide intratesticular / Intratesticular epidermoid cyst

Los quistes epidermoides intratesticulares en la infancia.No existen datos clínicos específicos que nos orienten hacia un diagnóstico de certeza., siendo necesario el estudio histopatológico. Basados en el caso presentado y en la revisión de la literatura, se analizan aspectos clínicos y diagnósticos.Aunque el tratamiento quirúrgico más utilizado ha sido la orquiectomía.Se recomienda al igual que otros autores, la enucleación del quiste y la conservación del testículo

Quiste epidermoide intratesticular / Intratesticular epidermoid cyst

Los quistes epidermoides intratesticulares en la infancia.No existen datos clínicos específicos que nos orienten hacia un diagnóstico de certeza., siendo necesario el estudio histopatológico. Basados en el caso presentado y en la revisión de la literatura, se analizan aspectos clínicos y diagnósticos.Aunque el tratamiento quirúrgico más utilizado ha sido la orquiectomía.Se recomienda al igual que otros autores, la enucleación del quiste y la conservación del testículo

[Leydig cell tumor]. / Tumor de células de Leydig.

We report on a 44-year-old patient with Leydig cell tumor of the testis that had been incidentally detected following orchidectomy for a tumor. The clinical, hormonal and histological criteria currently used to distinguish the malignant from the benign form of this tumor and the different therapeutical alternatives are discussed.

[Malacoplakia associated with adenocarcinoma of the rectum: clinico-pathologic and ultrastructural study]. / Malacoplaquia asociada con adenocarcinoma rectal: estudio clínico-patológico y ultraestructural.

A case of malacoplakia associated with rectal adenocarcinoma is reported. Optical and electron microscopic study disclosed a histiocytic infiltrate adjacent to the adenocarcinoma containing spherical and concentric inclusions designated as Michaelis-Gutmann bodies. The pathogenesis is discussed and the literature is reviewed.