Resumen Introducción. El diagnóstico de la tuberculosis extrapulmonar (TBEP) es un reto para los médicos. Se ha sugerido que el antígeno del cáncer 125 (CA-125), producido por las células mesoteliales, puede ser un biomarcador diagnóstico de TBEP. Objetivo. Describir el comportamiento de los niveles séricos del CA-125 en pacientes con tuberculosis (TB) atendidos en un hospital de referencia de Cali, Colombia. Materiales y métodos. Estudio transversal realizado en 99 pacientes con TB y mediciones de CA-125 (U/mL) antes de iniciar tratamiento para TB atendidos en la Fundación Valle del Lili entre 2007 y 2016. Los casos se clasificaron como TB pulmonar (TBP) (n=33) o TBEP (n=66). Se realizó un análisis bivariado para comparar las variables de interés (datos sociodemográficos, clínicos y de laboratorio) entre los grupos TBEP y TBP, y para determinar diferencias entre pacientes con resultados positivos y negativos para CA-125 en relación con la mortalidad. Resultados. Se reportaron niveles elevados de CA-125 en 55 pacientes (55.56%). Los resultados positivos para CA-125 (>35 U/mL) fueron más frecuentes en el grupo TBEP (59.0% vs. 48.48%). En el grupo TBEP se encontraron resultados positivos en los casos de serositis tuberculosa (100% TB pericárdica, 68.42% TB peritoneal y 66.66% TB pleural), y en 66.66% de los casos de TB miliar y vertebral, respectivamente. Además, se reportaron 15 muertes relacionadas con la infección por TB en el período de seguimiento (n=66), de las cuales 13 tuvieron un resultado positivo para CA-125, encontrando una diferencia significativa con aquellas con resultados negativos (p=0.021); sin embargo, el 47.05% de los pacientes supervivientes también tuvo un resultado positivo. Conclusiones: La mayoría de los casos de serositis tuberculosa, TB miliar y vertebral tuvieron niveles elevados de CA-125 antes de iniciar el tratamiento de la TB. El CA-125 puede resultar útil para fines de pronóstico en estos pacientes.

Abstract Introduction: Diagnosing extra-pulmonary tuberculosis (EPTB) is a challenge for physicians. It has been suggested that cancer antigen 125 (CA-125), which is produced by mesothelial cells, may be an EPTB diagnostic biomarker. Objective: To describe serum CA-125 levels behavior in patients with TB treated in a referral university hospital located in Cali, Colombia. Materials and methods: A cross-sectional study was conducted in 99 TB patients treated at Fundación Valle del Lili between 2007 and 2016 with CA-125 measurements (U/mL) made before TB treatment was started. Cases were classified as pulmonary TB (PTB) (n=33) or EPTB (n=66). A bivariate analysis was performed to compare the variables of interest (sociodemographic, clinical, and laboratory findings data) between EPTB and PTB groups, and to determine differences between patients with CA-125 positive results and those with negative results in relation to mortality. Results: Elevated CA-125 levels were reported in 55 patients (55.56%), and positive CA-125 results (>35 U/mL) were more frequent in the EPTB group (59.09% vs. 48.48%). In the EPTB group, results were positive in tuberculous serositis cases (100% pericardial TB, 68.42% peritoneal TB, and 66.66% pleural TB), and in 66.66% of miliary TB and spinal TB cases, respectively. Also, 15 TB infection-related deaths were reported in the follow-up period (n=66), of which 13 had a CA-125 positive result, finding a significant difference with those with negative results (p=0.021); however, 47.05% of the surviving patients also had a positive result. Conclusions: Most of tuberculous serositis, miliary TB, and spinal TB cases showed elevated CA-125 levels before starting TB treatment. Therefore, CA-125 may be useful for prognostic purposes in these patients.

Resumen Objetivo: Describir las características clínicas y desenlaces al tratamiento de los pacientes con tuberculosis resistente a isoniazida (Hr-TB) en una institución del suroccidente colombiano. Materiales y métodos: Se realizó un estudio observacional retrospectivo. Se incluyeron pacientes con confirmación diagnóstica, aislamiento microbiológico, pruebas de susceptibilidad a fármacos y evidencia de Hr-TB. Resultados: Se incluyeron 32 pacientes con Hr-TB entre 2006-2018 que corresponden al 6% (32/528) de resistencia del total de casos. El 78% (n=25) fueron casos nuevos, resistencia primaria, y el 22% (n=7) previamente tratados, resistencia adquirida. La comorbilidad más frecuente fue infección por VIH (n=9). El patrón de Hr-TB mostró en 23 (72%) casos con alto nivel, 4 (12%) de bajo nivel y 5 (16%) con bajo y alto nivel. El análisis de resultados al tratamiento se realizó a 22 pacientes, presentando el 50% cura, el 41% tratamiento completo y 9% muerte relacionada con la tuberculosis. Conclusiones: La Hr-TB predomina en los casos nuevos, lo que supone un obstáculo al tratamiento donde no se realizan las pruebas de susceptibilidad de forma rutinaria.

Abstract Objective: To describe the clinical characteristics and outcomes to the treatment of patients with isoniazid-resistant tuberculosis (Hr-TB) in an institution in southwest Colombia. Materials and methods: A retrospective observational study was conducted. Patients with diagnostic confirmation, microbiological isolation, drug susceptibility tests, and evidence of Hr-TB were included. Results: Thirty-two patients with Hr-TB were included between 2006-2018, corresponding to 6% (32/528) of resistance in total cases. 78% were new cases, primary resistance, and 22% previously treated, acquired resistance. The most frequent comorbidity was HIV infection (n = 9). The pattern of Hr-TB showed in 23 (72%) cases with high level, 4 (12%) of low level and 5 (16%) with low and high level. The analysis of treatment results was performed on 22 patients, presenting 50% cure, 41% completed treatment, and 9% death related to tuberculosis. Conclusions: Hr-TB predominates in new cases, which is an obstacle to treatment where susceptibility tests are not performed routinely.

Resumen Introducción: La infección latente por tuberculosis (ILTB) en pacientes que reciben terapias biológicas es una realidad, pero esto no ha sido estudiado a profundidad en Colombia. Objectivo: Determinar la prevalencia de ILTB en pacientes con enfermedades autoinmunes que reciben tratamiento con Infliximab/Etanercept en una institución de salud de referencia de Cali, Colombia, entre los años 2011-2017. Metodología: Se realizó un estudio observacional retrospectivo. Se revisó el ‘Registro de pacientes expuestos a fármacos antagonistas del factor de necrosis tumoral alfa (anti TNF-α) en la Fundación Valle del Lili entre los años 2011 y 2017’. Se incluyeron pacientes con diagnóstico de una enfermedad inflamatoria crónica quienes recibieron tratamiento con Infliximab, Etanercept o ambos y con seguimiento al menos un periodo de 2 años. Resultados: Se incluyeron 82 pacientes; la mediana de edad fue 47,5 años RIC (28-60 años), el 76% fue de sexo femenino, el 2% tuvo contacto íntimo con TB, el 15% era mayor de 65 años. El 56% tenía diagnóstico de artritis reumatoide como indicación de terapia y el 2% presentaba infección por HCV. La mediana de PPD fue 12 mm RIC (10-17 mm). La prevalencia fue del 3,8% para ILTB. Conclusiones: La conversión a ILTB muestra una prevalencia importante, por lo que resulta conveniente la realización de un seguimiento rutinario a los pacientes que reciben terapias con Infliximab y Etanercept.

Abstract Introduction: Latent tuberculosis infection (LTI) in patients receiving biological therapies is a reality, but this has not been studied in depth in Colombia. Objective: To determine the prevalence of LTI in patients with autoimmune diseases receiving treatment with Infliximab / Etanercept in a referral health center in Cali, Colombia, between the years 2011-2017. Methodology: A retrospective observational study was conducted. We reviewed the ‘Registry of patients exposed to tumor necrosis factor-alpha (TNF-α) antagonist drugs in Fundación Valle del Lili’. Patients diagnosed with a chronic inflammatory disease were included who received treatment with Infliximab, Etanercept, or both and followed at least two years. Design: Retrospective observational study. We reviewed the ‘Registry of patients exposed to tumor necrosis factor alpha (TNF-α) antagonist drugs in Fundación Valle del Lili’. Patients diagnosed with a chronic inflammatory disease were included who received treatment with Infliximab, Etanercept or both and followed at least a period of 2 years. Results: We included 82 patients; the median age was 47.5 years (IQR=28-60 years), 76% were female, 2% had intimate contact with tuberculosis, 15% were older than 65 years. The 56% had a diagnosis of rheumatoid arthritis as an indication of therapy, and 2% presented infection by hepatitis C virus. The median PPD was 12 mm (IQR=10-17 mm). The prevalence was 3.8% for LTI. Conclusion: The conversion to LTI shows an important prevalence, so it is convenient to perform a routine follow-up of patients receiving therapies with Infliximab and Etanercept.

SUMMARY: Knowing morphometry in length, circumference and angulation of the main bronchi and the intermediate bronchus can be relevant data in radiological, surgical procedures and even in life-threatening events such as bronchoaspiration. Evidence is scarce about the morphometry of the main bronchi and the intermediate bronchus, that is why the present study aimed to describe the morphometry of the main bronchi and the intermediate bronchus in a Colombian cadaveric population sample. A descriptive study was carried out where 29 specimens were selected from Cali, Colombia; 11 corresponded to cadavers and 18 to organs isolated from the lower respiratory tract; cadavers with duly dissected structures were included and samples with anatomical structures that were absent or damaged, and that affected the performance of the measurements were excluded. Descriptive statistics was used to analyze the data. The mean length of the right main bronchus was 1.69 cm 95 % CI (1.51-1.87), the mean length of the intermediate bronchus was 2.89 cm 95 % CI (2,663,12), the mean length of the left main bronchus was 3.34 cm 95 % CI (3-3.68); the interbronchial angle had an average of 80.17º 95 % CI (72.87-87.48). The measurements of the right main bronchus agree with those reported in the literature, the opposite occurs with the left main bronchus; interbronchial angle measurement showed differences to that reported by the literature. This study shows that although there are international nomenclatures and consensus, these have not been implemented correctly by health professionals and the term intermediate bronchus is used in daily practice, it is therefore necessary that the Societies of Anatomy and Morphology again discuss their importance and recognition in the nomenclature.

RESUMEN: Conocer la morfometría en longitud, circunferencia y angulación de los bronquios principales y del bronquio intermedio pueden ser datos relevantes en procedimientos radiológicos, quirúrgicos e inclusive en eventos que amenazan la vida como la broncoaspiración. Existe poca evidencia acerca de la morfometría de los bronquios principales y del bronquio intermedio, es por ello que el presente estudio tuvo como objetivo describir la morfometría de los bronquios principales y del bronquio intermedio en una muestra de población cadavérica colombiana. Se realizó un estudio descriptivo donde se seleccionaron 29 especímenes de Cali, Colombia; 11 correspondieron a cadáveres y 18 a órganos aislados del tracto respiratorio inferior; se incluyeron los cadáveres con las estructuras debidamente disecadas y se excluyeron las muestras con estructuras anatómicas ausentes o dañadas y que afectaran la realización de las mediciones. La media de longitud del bronquio principal derecho fue de 1,69 cm IC 95 % (1,51 - 1,87) la media de la longitud del bronquio intermedio fue de IC 95 % 2,89 cm (2,66 - 3,12), la media de longitud del bronquio principal izquierdo fue de 3,34 cm IC 95 % (3,01 - 3,68); el ángulo interbronquial tiene una media de 80,17º IC 95 % (72,87 - 87,48). Las mediciones del bronquio principal derecho concuerdan con las reportadas en la literatura, lo contrario ocurre con el bronquio principal izquierdo; la medición del ángulo interbronquial muestra diferencias a la reportada por la literatura. Este estudio muestra que a pesar de que existen nomenclaturas y consensos internacionales, estos no han sido implementados correctamente por los profesionales de la salud y el término de bronquio intermedio es utilizado en la práctica diaria, por lo que se hace necesario que las Sociedades de Anatomía y Morfología vuelvan a discutir su importancia y reconocimiento en la nomenclatura.

ABSTRACT Introduction: Aeromonas species are renowned enteric pathogens with virulence determinants linked to human diseases, such as gastroenteritis, skin, soft-tissue and muscle infections, and septicemia. A recent concern of resistance in this organism has emerged, especially the presence carbapenemases. Herein we describe a case series of emerging carbapenem-resistant Aeromonas species infection in our hospital in Cali, Colombia. Materials and methods: Cases from 2012 to 2018 are reported. Clinical data was abstracted from the clinical charts and laboratory information. Phenotypic detection of resistance was identified using the VITEK®2 system (BioMérieux) and broth microdilution MicroScan WalkAway plus System (Beckman Coulter). CARBA NP-test and multiplex qPCR assay was performed in 11 isolates to identify genes encoding carbapenemases (blaKPC, blaVIM, blaIMP and blaNDM ). Results: 21 cases of Aeromonas infection in hospitalized patients with phenotypic resistance to carbapenems were studied. The median age was 50 years, 55% (12/21) were male, and 67% (14/21) were healthcare-associated infections (HAI). Aeromonas hydrophila was the most common species (19/21). Forty-three percent (9/21) of the patients were immunocompromised. The mortality was 33% (7/21), and in patients with bacteremia was 100%. Most patients received empirical treatment with meropenem and failed to this treatment. PCR amplification tests showed negative results for the carbapenemases analyzed. Conclusion: Emerging phenotypic carbapenem-resistant infection has been seen in our hospital, most as HAI. High mortality was found, especially in immunocompromised patients and in those who failled empirical treatment with carbapenems. As the main carbapenemases tested were negative, carbapenem-resistant could be attributed to an intrinsic metallo-β-lactamase, CphA encoded by the cphA gene, possible hyperproduction of ampC β-lactamase and/or porins expression.