Pyogenic liver abscess is a rare complication of diabetes, usually seen in adults greater than 50 years of age who have had diabetes for many years. We describe an 18-year-old male with type 2 diabetes found to have a pyogenic liver abscess caused by Klebsiella pneumoniae, and show accompanying images from his evaluation for fever of unknown origin (FUO). We conclude that in a child or adolesce...

A 40 year patient presented with pyrexia of one month duration. Routine work up for fever of unknown origin (FUO) was negative. Bone marrow aspiration and culture done yielded Brucella. Bone marrow cultures are recommended for patients for FUO for whom the routine workup turns out to be negative. Serological tests for brucellosis can be false-negative in some cases of brucellosis due to prozone...

Fever of unknown origin (FUO) is a serious problem in the United States. An unidentified agent was cultured from the stool of an infant who presented with FUO. This virus showed growth in HFDK cells and suckling mice. Using DNase sequence-independent single-primer amplification, we identified several nucleotide sequences with a high homology to Theiler's murine encephalomyelitis virus. Nearly f...

A 26-year-old female was admitted for fever of unknown origin (FUO), headaches, left ankle edema, and a lower extremity rash consistent with erythema nodosum. She had no respiratory symptoms or family history of autoimmune diseases. A chest X-ray was negative for pneumonia or hilar adenopathy. Extensive autoimmune workup was negative. A chest, abdomen, and pelvis computed tomography scan was un...

30 The term fever of unknown origin (FUO) is often overused in veterinary medicine, as the number of patients in which a true cause of fever cannot be uncovered is relatively small. In 1961, Petersdorf and Beeson first defined FUO in humans as a fever ≥ 101°F (38.3°C) that persists for greater than 3 weeks, with the diagnosis uncertain after one week of study in the hospital. This definition ha...

A young male was referred to us for evaluation of fever of unknown origin (FUO). He had history of recurrent painful oral ulcers for one year and moderate to high grade fever, pustulopapular rash, and recurrent genital ulcers for 6 months and hemoptysis for 3 days. He was detected to have intracardiac thrombi and pulmonary arterial thrombosis along with underlying Behcet's disease (BD). Patient...

Fever of Unknown origin (FUO) poses a diagnostic dilemma for most physicians especially when a thorough diagnostic workup is inconclusive. It was defined by Beeson and Petersdorf in1961 as a fever that is greater than 38.3 degrees Celsius (°C), persisting for a period longer than three weeks with a failure to reach a diagnosis despite one week of inpatient investigations [1]. The most common et...

OBJECTIVE The causes of fever of unknown origin (FUO) vary depending on the region and time period. We herein present a study of patients with classic FUO where we investigated differences based on patient background factors, such as age and causative diseases, and changes that have occurred over time. METHODS We extracted and analyzed data from the medical records of 256 patients ≥18 years o...

Background: The etiology of fever of unknown origin (FUO) may differ from different countries. This study was conducted to evaluate the etiology of FUO in patients attending SKIMS, a tertiary care teaching hospital, at Srinagar, Kashmir, India. Methods: From July 2010 to September 2012, this study was done to examine the profile of patients with FUO. The classic FUO was defined as three outpati...

Primary Cytomegalovirus (CMV) infection is often not suspected as a cause of fever of unknown origin (FUO) in immune-competent adults. We present a case-series of symptomatic primary CMV infection in immunocompetent adults presenting as fever of unknown origin (FUO). All patients with CMV serology tested between November 2008 and June 2016 underwent chart review. Cases were defined as those bet...