[Giant lipomas or retroperitoneal liposarcomas? Controversies in their diagnosis and treatment].

Background: Retroperitoneal lipomas are extremely rare tumors that must be differentiated from well-differentiated liposarcomas (WD-LPS).

Objectives: To summarize the evidence about giant retroperitoneal lipomas or liposarcomas; and to elaborate recommendations for their management.

Data Sources: A systematic literature search from January 1985 to December 2019 and a review of our own cases was performed.

Risk factors for methicillin-resistant Staphylococcus aureus and extended-spectrum ß-lactamase producing Enterobacterales in patients with diabetic foot infections requiring hospital admission.

Objective: Methicillin-resistant Staphylococcus aureus (MRSA) and extended-spectrum β-lactamase-producing Enterobacterales (ESBL-E) may complicate the treatment of diabetic foot infections (DFIs). The aim of this study was to determine the risk factors for these pathogens in DFIs.

Methods: This was a prospective observational study of 167 consecutive adult patients with DFIs.

[Portal-splenic-mesenteric venous thrombosis secondary to a mutation of the prothrombin gene].

Thrombosis of the portal-mesenteric axis is an infrequent cause of intestinal ischemia or infarction. In addition to the multiple acquired factors that contribute to the development of this entity, hereditary risk factors, especially the factor V Leiden mutation and the G20210A mutation of the prothrombin gene, have been implicated. The G20210A mutation of the prothrombin gene is found in up to 40% of patients with splenic-portal-mesenteric thrombosis.

Utility of frozen-section examination for diagnosis of malignancy associated with multinodular goiter.

Background: Frozen-section examination (FSE) has traditionally been used for the intraoperative diagnosis of thyroid cancer. However, the utility of the technique is now controversial, especially in multinodular goiter (MNG), on which there are few studies. The aim of this study was to analyze the utility of FSE for ruling out malignancy in patients undergoing surgery for MNG.

[Multiple angiodysplasia of the small intestine. A diagnostic and therapeutic challenge].

Small bowel bleeding is infrequent and presents a challenge to the clinician. Approximately 30-40% of gastrointestinal bleeding localized in the small bowel is due to angiodysplasia, a vascular malformation. We present the case of a patient with multiple angiodysplasia of the small bowel who required push enteroscopy and capsule endoscopy to establish the diagnosis.