[Meningococcal meningitis in Chile between 1990 and 2019]. / Meningitis meningocócica en Chile entre los años 1990 y 2019.

Since 1941, outbreaks of Neisseria meningitidis have been recorded in Chile which, to date, have varied according to clinical form, incidence, lethality, and the responsible serogroup. OBJECTIVE: To summarize the available evidence on the epidemiological profile of acute bacterial meningitis due to Neisseria meningitidis in Chile, analyzing the incidence between 1990 and 2019. METHOD: A systematized review of primary articles was carried out following the Cochrane Collaboration standards. The information sources were PubMed, Scielo, and LILACS. Publications on acute bacterial meningitis due to Neisseria meningitidis were included, with a descriptive design, and in English and Spanish. Studies on the effectiveness of vaccines and diagnostic techniques were excluded. RESULTS: Between 1990 and 2019, the evidence collected focuses exclusively on the year 2012. Of the 133 cases of invasive meningococcal disease (IMD) reported that year, 42 cases presented with meningitis. Of the IMD cases caused by serogroup W135 strains, 21.7% of the cases presented with meningitis (13 cases), compared with the "Non-W135" strains, in which it was 67.4% (29 cases). Lethality due to IMD was higher in patients affected by serogroup W135 (26.7%), compared with patients affected by serogroup "Non-W135" (13.9%). DISCUSSION: The year 2012 shows a change in the prevalent serogroup from serogroup B to W, with a decrease in cases of meningitis and an increase in cases of meningo- coccemia and the lethality of IMD.

Tumor sólido-pseudopapilar del páncreas presentación de 3 casos clínicos / Solid-pseudopapillary tumor of the pancreas presentation of 3 clinical cases

El tumor sólido-pseudopapilar del páncreas (TSPP) es una neoplasia infrecuente (1-2% de los tumores exocrinos), que afecta predominantemente a mujeres jóvenes, con bajo potencial de malignidad (15% da metástasis). Su diagnóstico preoperatorio es difícil, principalmente debido a que a la imagenología no tiene una característica que la pueda diferenciar de otros quistes pancreáticos, por lo que generalmente es un hallazgo histopatológico. El tratamiento quirúrgico presenta buena sobrevida, incluso en presencia de metástasis. Presentamos 3 casos con cuadro clínico, imagenología, tratamiento e histopatología, con el fin de aportar más información, sobre esta infrecuente patología.

The solid-pseudopapillary tumors of the pancreas (TSPP) are a uncommon neoplasm (1-2% of exocrine tumors). Are more frequent in young women and presents a low malignant potential (15% develop metastases). Its preoperative diagnosis is very difficult, because these tumors haven`t radiological features that makes distinguish from the other pancreatic cysts tumors. Usually are a histopathological finding. Surgical therapy provides good survival, even in the presence of metastases. We present 3 cases with clinical, imaging, treatment and histopathology to provide more information about this rare disease.

Tumor sólido-pseudopapilar del páncreas: presentación de 3 casos clínicos / Solid-pseudopapillary tumor of the pancreas: presentation of 3 clinical cases

El tumor sólido-pseudopapilar del páncreas (TSPP) es una neoplasia infrecuente (1-2 por ciento de los tumores exocrinos), que afecta predominantemente a mujeres jóvenes, con bajo potencial de malignidad (15 por ciento da metástasis). Su diagnóstico preoperatorio es difícil, principalmente debido a que a la imagenología no tiene una característica que la pueda diferenciar de otros quistes pancreáticos, por lo que generalmente es un hallazgo histopatológico. El tratamiento quirúrgico presenta buena sobrevida, incluso en presencia de metástasis. Presentamos 3 casos con cuadro clínico, imagenología, tratamiento e histopatología, con el fin de aportar más información, sobre esta infrecuente patología.