An Uncommon Encounter of Roseomonas gilardii Bacteremia: A Case Report.

Roseomonas genus was initially described in 1993 as a "pink coccoid." It is a non-fermentative, aerobic, and gram-negative bacteria. This genus has been uncovered in diverse environmental niches, ranging from water and soil to air and plants. Despite its prevalence in the natural world, human infections stemming from Roseomonas species remain a rare occurrence. This organism is also known to be resistant to standard antibiotics. We present a case of an 85-year-old woman with Roseomonas gilardii (RG) bacteremia who is a resident at an assisted living facility. Healthcare providers should consider this bacterium in slow-developing gram-negative infections, potentially opting for broad-spectrum antibiotics as an initial treatment.

A Case of Roseomonas gilardii Peritonitis Associated with a Flooded Peritoneal Dialysis Treatment Space.

Bacterial peritonitis is a key complication of Peritoneal Dialysis (PD) and a preventable cause of withdrawal from PD treatment. Infection generally arises from contamination with skin commensals during handling of the dialysis delivery system or from translocation of gastrointestinal organisms and more rarely from an environmental organism. Herein, we report the case of a 73-year-old admitted for PD-related peritonitis due to Roseomonas gilardii with an associated environmental exposure from a domestic plumbing issue. We describe the presentation, case, and antibiotic regimen progression from empiric therapy of ceftazidime and vancomycin IP to ciprofloxacin. We acknowledge the importance of performing laboratory sensitivities given the high antibiotic resistance of the Roseomonas genus. We offer that nephrologists should consider Roseomonas as a potential causative organism of peritonitis, especially when initial or further history reveals exposure to potentially contaminated water.

Roseomonas gilardii in patient with leukemia and acute appendicitis: case report and review.

Appendicitis is one of the most common abdominal conditions requiring emergency surgery. However, acute appendicitis in patients with leukemia is a rare condition. We report herein the case of an 18-year-old female with acute lymphoblastic leukemia (ALL), who was hospitalized in hematology department because of abdominal pain and fever. Ultrasound (US) of the abdomen revealed appendicitis and the patients underwent open appendectomy. The patient recovered without complications and was discharged in a good condition. The day of the operation blood and peritoneal fluid cultures were taken and Roseomonas gilardii was detected and healed empirically. The correct diagnosis of appendicitis in patients with leukemia and their management is challenging for physicians. Very rare microorganisms can be detected in these patients.