[Atypical scrotal leiomyoma. A case report]. / Leiomioma atípico de escroto. A propósito de un caso.

A case of intrascrotal atypical leiomyoma is reported. This lesion is extremely rare and usually misdiagnosed. Microscopically, contain bizarre and pleomorphic tumor cells, as well as showed immunohistochemical evidence of smooth muscle differentiation. An important microscopic criterion in the distinction with other entity, as the leiomyosarcoma, is the number of mitotic figures, scarce in the atypical leiomyoma and high in the smooth muscle tumours malignant.

[Idiopathic calcinosis of the scrotum. Cytohistologic diagnosis in biopsy and puncture samples]. / Calcinosis idiopática del escroto. Diagnóstico citohistológico en biopsia y material de punción.

OBJECTIVE: To report an uncommon case of idiopathic calcinosis of the scrotum. METHODS/RESULTS: A case of idiopathic scrotal calcinosis in a 50-year-old male who presented with multiple hard masses in the scrotum is described. Cytological (fine needle aspiration) and histological (biopsy and resection) analyses of these lesions were performed. CONCLUSIONS: Although the etiopathogenesis of scrotal calcinosis remains unknown, the involvement of a dystropic mechanism has recently been described. The usefulness of fine needle aspiration, a method that has gradually been included in the study of testicular pathology, is underscored.

[Correlation among endoscopic, histological, and microbiological findings in gastroduodenal pathology associated with Helicobacter pylori]. / Correlación entre los hallazgos endoscópicos, histológicos y microbiológicos de la patología gastroduodenal asociada a Helicobacter pylori.

We studied 152 patients referred for endoscopy of the upper gastrointestinal tract. Samples of the gastric mucosa and fundus were taken and processed for microbiological and histological study using conventional methods. Acute lesions to the gastrointestinal mucosa were those most frequently observed in endoscopy (28.3%). The overall prevalence of chronic gastritis was 90.8%. The prevalence of infection by H. pylori was 59.8%. All patients in which gastric ulcer or malignant lesions were observed had some kind of chronic gastritis. Duodenal ulcer was the lesion with the highest prevalence and statistical significance with respect to the existence of H. pylori infection. There was a highly significant correlation between H. pylori gastric colonization and lesions of the diffuse antral type and with gastric activity. The significant correlations among the endoscopic, microbiological and histological findings are discussed.

[Male pseudohermaphroditism: perineoscrotal pseudovaginal hypospadias]. / Pseudohermafroditismo masculino: hipospadias pseudovaginal perineoescrotal.

We report on a case of pseudovaginal perineoscrotal hypospadias. The gross and microscopic features of this condition are described. The existence of ambiguous external genitalia without gynecomastia together with a complete inhibition of the müllerian structures is confirmed.

[Hemangiomatous lesions with lymphangiectasias in the large intestine]. / Lesiones hemangiomatosas con linfangiectasias en intestino grueso.

We present the case of a 16 year-old male who presented intestinal hemorrhages since childhood; he was operated in emergency for microhemangiomas located in sigmoid colon and rectum. This lesion can be considered as a complex vascular hamartoma. We review the literature and discuss the differences between this lesion and angiodysplasia.

[Plasmacytoma of the testis: report of a case]. / Plasmocitoma de testículo: presentación de un caso.

We report on a case of testicular plasmacytoma in a patient with multiple myeloma (MM), who is currently in a state of remission following chemotherapy and radiotherapy. The literature is reviewed, and testicular involvement in plasma cell neoplasms is discussed.

The pathology of fatal Mediterranean spotted fever.

A 77-year-old woman from rural Spain had a febrile summertime disease develop with rash, eschar, and pulmonary, abdominal, and neurologic signs and symptoms. Mediterranean spotted fever (MSF) was diagnosed late in the course, and antirickettsial treatment was given only during the last 30 hours of life. Clinical manifestations of severe disseminated vascular injury included thrombocytopenia, hypoalbuminemia, edema of the lungs and legs, and severe prerenal azotemia. The diagnosis was documented by specific serology. Necropsy revealed vascular injury with perivascular lymphohistiocytic infiltrates suggestive of rickettsiosis in the central nervous system, lung, heart, kidneys, esophagus, stomach, colon, pancreas, spleen, and thyroid. Gastric hemorrhage and acute pneumonia contributed to the patient's death on day 18 of illness. Antimicrobial treatment and host defenses apparently reduced rickettsiae to an undetectable quantity. MSF has increased in incidence in the Mediterranean basin and has been reported in travelers returning to the United States.

[Immunofluorescence study of hyaline membranes and problems involved (author's transl)]. / Estudio por inmunofluorescencia de las membranas hialinas y su problemática.

Lung tissues from died premature babies were studied by means of the fluorescein technic, using anti-IgG, anti-IgM, anti-fr. C-3 of the complement and anti-fibrinogen. It is shown that fibrinogen, IgG and C-3 fr. of the complement are present in the hyaline membrane. In view of these findings, and upon the available data on the subject and current research, the role of the complement in the production of hyaline membrane is discussed.