[Clostridiodes difficile bacteraemia. First mexican case report].

Background: Clostridiodes difficile bacteremia (CDB) develops in less than 1% of all the cases, nonetheless, with a significant increase in mortality. The objective of the present article is to report the first case of CDB in the Mexican population, empathizing with the treatment difficulty derived from the lack of consensus.

Clinical Case: A 42-year-old female with previous history of chronic thromboembolic pathologies and grade III obesity, develops community acquired atypical pneumonia requiring hospitalization, having parenteral antibiotics.

[Upper digestive tract bleeding as a clinical presentation of non-Hodgkin's lymphoma].

Background: Non-Hodgkin's lymphoma (NHL) is a group of malignant tumors of the nodal and extranodal lymphoid tissues, and it is associated with autoimmune diseases, mainly rheumatoid arthritis (RA). Extra nodal presentation is observed in 40%, mainly affecting the gastrointestinal tract in 3% of cases, with bleeding in the digestive tract being a rare cause of clinical presentation that requires a detailed diagnostic approach.

Clinical Case: 55-year-old female with a history of RA, admitted to an internal medicine service due to bleeding in the digestive tract; patient presented clinical data of deep vein thrombosis in the left pelvic limb and consumptive syndrome under study.

Quantitative myocardial perfusion evaluation with positron emission tomography and the risk of cardiovascular events in patients with coronary artery disease: a systematic review of prognostic studies.

Aims: To evaluate the prognostic value of quantitative myocardial perfusion imaging with positron emission tomography (PET) for adverse cardiovascular outcomes in patients with known or suspected coronary artery disease (CAD).

Methods And Results: A search in MEDLINE and Embase was conducted for studies that evaluated (i) myocardial perfusion in absolute terms with PET, (ii) prognostic value for the development of major adverse cardiovascular events (MACE), cardiac death, and/or all-cause mortality, and (iii) patients with known or suspected CAD. Studies were divided according to the radiotracer utilized and their included population (patients with and without previous infarction).