Prevalence of Cancer in Rheumatoid Arthritis: Epidemiological Study Based on the National Health and Nutrition Examination Survey (NHANES).

Rheumatoid arthritis (RA) is a multi-system autoimmune disease with significant morbidity and healthcare burden. It is an inflammatory condition and has been associated with lymphomas, with or without the presence of immunosuppressive therapy. However, the association of rheumatoid arthritis with other malignancies has been inconsistent. We used the data from a population-based National Health and Nutrition Examination Survey (NHANES) for epidemiological study to evaluate the association between RA and the incidence of cancer. Using the data collected between 2011 and 2014, we were able to determine the incidence of cancer in 11,262 patients. Incidence of cancer was increased in patients with RA with an odds ratio of 1.632 (95% confidence interval [CI]: 1.239-2.151; p=0.0005). Breast cancer (CA) and prostate CA were the most common types of cancer (each diagnosed in 16.22% individuals) and lung CA and lymphomas found in 1.35% of individuals. It is also important to be aware of increased risk and adequately screen patients for malignancies during the course of treatment and follow up of rheumatoid arthritis. Further large prospective studies are required to determine the association of the RA or its treatment and the risk of malignancies.

A Rare Case of Cedecea Davisae Bacteremia Presenting as Biliary Sepsis.

Cedecea davisae is a gram-negative, non-sporulating motile rod-shaped bacteria of the Enterobacteriaceae family. It is an opportunistic pathogen in advanced-aged patients with many comorbid diseases and the immunosuppressed. To the best of our knowledge, only 12 cases of C. davisae bacteremia have been reported in the literature. Here we discuss the 13th case of C. davisae bacteremia, which is the first reported case presenting as biliary sepsis. A 41-year-old female, on prednisone for minimal change disease, presented with nausea, vomiting, fever, and diarrhea. She had dry mucous membranes, scleral icterus, and elevated liver enzymes. Blood cultures revealed Cedecea davisae. She improved after management with broad-spectrum antibiotics. Further studies are needed to understand its role in the mode of transmission, the spectrum of infection, and treatment options. There is a need for physicians to be cognizant of emerging pathogens and address their antibiotic resistance profiles.

A Fatal Case of Vancomycin Associated Drug Reaction with Eosinophilia and Systemic Symptoms Syndrome in a Septuagenarian.

Drug reaction with eosinophilia and systemic symptoms (DRESS) is a rare but potentially life-threatening multi-system disorder with a mortality rate of up to 10%, due to severe hypersensitivity drug reaction involving the skin and multiple internal organ systems. We emphasize the increasing prevalence of DRESS syndrome secondary to vancomycin use. A 79-year-old woman presented to the hospital with complaints of right upper quadrant pain, intense pruritis, and jaundice of one-week duration. She was on vancomycin and cefepime for six weeks after a wound infection, and both the medicines were withheld a week ago due to the increasing creatinine. She was afebrile with a pulse-94/min, blood pressure-92/46 mm of Hg, and respiratory rate-14/min. She had scleral icterus, diffuse maculopapular rash, generalized edema, right upper quadrant tenderness, and a positive Murphy's sign. Investigations revealed hemoglobin-10.5 gm/dl, white blood cell count-16.0 K/uL, peripheral eosinophil count-1730 K/uL, alkaline phosphatase-2742 U/L, aspartate transaminase-612 U/L, alanine transaminase-674 U/L, total bilirubin-14.2 mg/dl with a direct component of 9.5mg/dl, blood urea nitrogen-64 mg/dl, creatinine-5.01 mg/dl, glomerular filtration rate-8 ml/min and vancomycin trough level-10.8 mcg/ml. Imaging studies were unremarkable. The renal function improved after high dose steroids, N-acetylcysteine and withdrawal of vancomycin, but the progression of liver failure continued. Eventually, she passed away due to multiorgan failure. Vancomycin is a rare drug to cause DRESS syndrome with 31 cases reported to date. Early recognition of this condition can hasten proper treatment and recovery. Further research on the association of vancomycin trough levels and DRESS syndrome needs to be conducted.

Cutaneous geotrichosis due to Geotrichum candidum in a burn patient.

Geotrichum candidum is a saprophytic yeast known to colonize the human skin, respiratory tract and gastrointestinal tract. It can cause local or disseminated disease (geotrichosis), mainly in the immunocompromised host. Trauma, indwelling catheter use, prolonged broad-spectrum antibiotic treatment and critical illness have also been implicated as risk factors. Here we report the first case, to our knowledge, of cutaneous G. candidum infection in a burn patient. The isolate had a high amphotericin B minimum inhibitory concentration (MIC) and the patient experienced concomitant Candida orthopsilosis fungaemia, and so was treated with a combination of voriconazole and micafungin. This case highlights the importance of source control, rapid identification of G. candidum infection and MIC determination to guide antifungal therapy, which typically consists of amphotericin B with or without flucytosine or voriconazole alone. Clinicians should be aware of geotrichosis as a clinical entity in burn patients as well as in the immunocompromised. Antifungal resistance and breakthrough disease are an ongoing concern due to the increasing number of immunocompromised at-risk patients and the use of routine mould prophylaxis.

Device-associated Central Nervous System Infection Caused by Candida parapsilosis.

Meningitis is a common and life-threatening infection of the central nervous system (CNS) in infants with long-term and disabling sequelae like hydrocephalus. Hydrocephalus is treated by diverting cerebrospinal fluid (CSF) either to another body cavity (via CSF shunt) or externally (via CSF drain) which are prone to infection. Though rare, Candida parapsilosis (C. parapsilosis) is a known pathogen in device-associated CNS infections and has been reported in both, infants and adults. A six-month-old male infant was brought to the hospital with disproportionate head enlargement of three months duration. Magnetic resonance imaging (MRI) was suggestive of gross asymmetrical hydrocephalus. An external ventricular drain (EVD) was placed, and vancomycin and meropenem were started. Four weeks later, he developed a fever with a blocked EVD. Repeat MRI revealed gross asymmetric dilatation of left lateral ventricle along with pneumocephalus in the right periventricular region. A right temporoparietal craniotomy with drainage of a multiloculated abscess was done along with the removal of right EVD and placement of left EVD. CSF showed pan-susceptible C. parapsilosis and fluconazole was started. Despite treatment, CSF continued to grow C. parapsilosis through day 10. The EVD was removed, and an Ommaya reservoir along with the ventricular catheter was placed for better interventricular antibiotic administration. After day 13 CSF became sterile. Ommaya reservoir was removed, fluconazole was continued for three weeks, and a ventriculoperitoneal shunt was placed five weeks later. The device-associated CNS infections are insidious with nonspecific manifestations making diagnosis difficult. C. parapsilosis has been increasing in prevalence, especially in immunocompromised hosts, infants, and in patients with indwelling catheters. Amphotericin B or fluconazole is the usual treatment with excellent outcomes and no mortality. This case underscores the need for suspicion of C. parapsilosis as a cause of device-associated CNS infections.

Methods of phenotypic identification of non-tuberculous mycobacteria.

Non-tuberculous mycobacteria (NTM) are composed of mycobacterial species other than the Mycobacterium tuberculosis complex. Initially thought to be mere contaminants when isolated from clinical specimens, literature is increasing by the day showing NTM as proven pathogens. Due to the difference in antimicrobial susceptibility of different species, it becomes imperative for the microbiology laboratory to identify them to the species level. Molecular methods are available for rapid and accurate identification, but in a resource limited nation, phenotypic methods, albeit time consuming, are of paramount importance. By means of this article, the authors intend provide a concise summary of the basic biochemical reactions which can be done to identify most commonly isolated NTM.