Se presenta caso clínico de paciente femenina de 53 años de edad con absceso esplénico, una patología en ocasiones difícil de diagnosticar por su baja incidencia, pero con una alta mortalidad cuando no se recibe tratamiento adecuado. En muchas ocasiones el paciente refiere un signo clínico no muy conocido, llamado signo de Kerh. A continuación, presentamos un caso clínico interesante de dicha patología.

Background HIV infection and antiretroviral therapy (ART) can lead to metabolic abnormalities associated with increased cardiovascular disease risk, some of these abnormalities (central obesity, elevated fasting glucose, triglycerides, and blood pressure and low HDL cholesterol) are in metabolic syndrome (MetS). The prevalence of MetS increases with age. Currently, the status of MetS in people with HIV (PWH) Guatemala is unknown. We assessed the prevalence of MetS and potential predictors in PWH participating in prospective cohort study at Hospital Roosevelt in Guatemala City. Methods We performed a cross-sectional analysis of PWH under 40 years old receiving ART for at least 6 months from July 2019 to March 2020. The harmonized criteria for MetS and the cut-off for waist circumference recommended by the Latin American Diabetes Association were used. Association between MetS and gender, place of residency, ethnicity, educational level, baseline and current CD4 count, smoking, alcohol consumption, physical activity, viral load, body mass index (BMI) and ART exposure was assessed in bivariate analysis. Potential predictors (p-value < 0.1) were included in a multivariate binary logistic regression model. Results Of total cohort of 757 participants enrolled390 (51.5%) were younger than 40 years. Of those under < 40 years, 150 (38.5%) were women, 59 (15.1%) Mayan, median age was 32 years (IQR 27, 37). 93 (23.8%) had MetS. Between group differences in Table 1. Of those with Met, 51 (54.8%) had elevated waist circumference, 87 (93.5%) elevated triglycerides, 83 (89.2%) low HDL-c, 56 (60.2%) elevated blood pressure and 35 (37.6%) elevated fasting glucose. Body mass index (BMI) ≥ 25 kg/m2 or higher and 2 years or more of cumulative non-nucleoside reverse transcription inhibitors (NNRTI) where more common in those < 40 years with MetS compared to those without MetS. On multivariable regression, MetS was associated with current CD4 count < 200 (OR 3.1; IC 1.51, 6.34; p-value < 0.01) and BMI ≥ 25 kg/m2 (OR; 6.53; IC 3.64, 11.73; p-value < 0.01). Table1. Between group differences (No MetS vs MetS) Conclusion Nearly one in every four PWH under 40 years old in our cohort was affected by MetS. Dyslipidemia (elevated triglycerides and low HDL-c) was the main driver of MetS. Lower CD4 count and overweight were predictors for MetS in PWH under 40. Disclosures Andrej Spec, MD, MSCI, Astellas (Grant/Research Support)Mayne (Consultant)Scynexis (Consultant)

Background Histoplasmosis is a common endemic fungal infection in the Americas, causing significant morbidity and mortality, particularly in immunocompromised patients. Existing diagnostic methods are limited in their sensitivity (especially in pulmonary histoplasmosis) and turnaround time. Methods We examined prospectively collected breath samples from 84 patients with suspected histoplasmosis 3/2019 - 2/2020 at Hospital Roosevelt (HR; Guatemala City, Guatemala, n = 56) and suspected invasive fungal disease 1/2018 - 10/2019 at Brigham and Women’s Hospital (BWH; Boston, MA, USA, n = 28) using thermal desorption gas chromatography-tandem mass spectrometry (TDU-GC-MS/MS). Patients were evaluated for histoplasmosis and other infections according to the local standard of care – of note, 18/56 patients at HR did not have Histoplasma urine antigen testing. Results Median age was 44 years, 60 (71%) were male, 23 (27%) had HIV, 15 (18%) had hematologic malignancy. 7 patients were diagnosed with histoplasmosis over the study period (4 at HR, 5 at BWH), with a clinical syndrome + positive Histoplasma urine or serum antigen test, with some patients also having yeast forms on tissue biopsy. 3 patients had disseminated and 4 pulmonary histoplasmosis. 4 patients with histoplasmosis had co-infections – 2 tuberculosis (TB), 1 influenza, and 1 Pneumocystis jirovecii (PJP) pneumonia. 4 patients were receiving antifungal therapy active against Histoplasma at the time of their first breath sample. We found 3 sesquiterpenes: (A) cyperene, (B) 1R,4aR,8aR)-2,5,5,8a-Tetramethyl-4,5,6,7,8,8a-hexahydro-1H-1,4a-methanonaphthalene, and (C) viridiflorol in patients with histoplasmosis, that distinguished these patients from those with other pneumonia (TB, coccidioidomycosis, invasive aspergillosis, mucormycosis, PJP, bacterial pneumonia) with 100% sensitivity and 70% (95% CI 59, 80) specificity. Figure 1. TDU GC-MS/MS spectral comparison in histoplasmosis vs. the other invasive mycoses aspergillosis or mucormycosis. A: Cyperene; B: (1R,4aR,8aR)-2,5,5,8a Tetramethyl-4,5,6,7,8,8a-hexahydro-1H-1,4a-methanonaphthalene; C: viridiflorol; D: 1H-Indene, 2,3,3a,4-tetrahydro-3,3a,6-trimethyl-1-(1-methylethyl)-; E: β-funebrene; F: trans-α-bergamotene; G: eremophilene; H: spathulenol; I: cedrene; J: cedranoxide, 8,14- Conclusion Conclusion: Patients with histoplasmosis have a unique secondary metabolite breath signature that can be used for the noninvasive diagnosis of pulmonary and disseminated histoplasmosis. Many patients in this cohort did not undergo urine antigen testing or other diagnostic workup for histoplasmosis, which may have affected our specificity estimates. Disclosures Francisco M. Marty, MD, SCYNEXIS, Inc. (Scientific Research Study Investigator)

La Enfermedad por Coronavirus 2019 (COVID-19) produce neumonía que requiere tratamiento con Tocilizumab (TCZ). Existe poca información del TCZ en población guatemalteca. Objetivo: describir la asociación del TCZ con el riesgo de intubación orotraqueal (IOT) y sobrevida en pacientes con neumonía por COVID-19. Material y métodos: estudio trasversal, de marzo a septiembre 2020, en 144 pacientes del área COVID-19 del Hospital Roosevelt. Recibieron tratamiento estándar y TCZ según protocolo interno. Se comparó el riesgo relativo (IC 95%) de IOT y sobrevida de los que recibieron y los que no recibieron. Resultados: se incluyeron 105 hombres y 39 mujeres. La media de edad fue 53±12 (DE) años y 6±4 (DE) días de inicio de síntomas al ingreso. Comorbilidades más frecuentes fueron Hipertensión Arterial Sistémica y Diabetes Mellitus Tipo 2. El estado de gravedad fue severo en 42% de los pacientes. El síndrome de Distrés Respiratorio Agudo fue moderado en el 32%. Se dio ventilación mecánica invasiva a 46 pacientes. Fallecieron 51 pacientes y 93 fueron egresados vivos. Se administró TCZ a 98 pacientes, éste se asoció a una disminución en el riesgo de intubación del 53% (RR 0,47; IC95%: 0.30-0.74; p=0,02) y un aumento en las probabilidades de sobrevida del 42% (RR 1.42; IC95%: 1.04-1.95; p=0,015). Conclusión: Tocilizumab en pacientes con neumonía por COVID-19 reduce el riesgo de intubación orotraqueal y mejora las probabilidades de sobrevida.