Primary Bacteremia Caused by Rhizobium radiobacter in Neonate: A Rare Case Report

Septic shock caused by Rhizobium radiobacter in an elderly woman: A case report

RATIONALE

Rhizobium radiobacter is a Gram-negative pathogen present in soil and plants. Cases of R radiobacter infection in immunocompromised hosts have been sporadically reported. However, septic shock caused by R radiobacter is rarely seen.

PATIENT CONCERNS

Here, we describe an elderly patient with a rapid progression of watery diarrhea, anorexia, fever, weakness, oliguria, and shock. Blood results showed increased total white blood cell count and C-reactive protein. Arterial blood gas results showed hypoxia and elevated lactate level. The Sequential Organ Failure Assessment score was 11. Blood culture at admission showed Gram-negative bacteria, which were later confirmed as R radiobacter.

DIAGNOSIS

Septic shock caused by R Radiobacter.

INTERVENTIONS

The patient was treated with intravenous cefoperazone/sulbactam and sequential oral levofloxacin.

OUTCOMES

The patient recovered completely.

CONCLUSION

R radiobacter may be considered as a potential opportunistic pathogen that may cause severe sepsis in elderly patients, especially those with multiple underlying diseases.

Fournier gangrene due to Rhizobium Radiobacter

Fournier's gangrene (FG) is a life-threatening, rapidly progressing acute necrotizing fasciitis of perianal, genitourinary and perineal areas. The most common isolated pathogens are E.coli, Streptococcus and Enterococcus in tissue and abscess cultures. However we present the first Rhizobium radiobacter FG in this case. A 47-year-old man presented with black necrotizing area with malodorous pus drainage in the bottom of the right hemiscrotum. Intravenous imipenem and Clindamycin were started prophylactically; all necrotizing tissues were debrided and right hemiscrotectomy was performed. Rhizobium radiobacter was isolated from tissue and abscess cultures. After successful treatment patient was discharged posteroperative 18th day. The combination therapy of early and totally surgical debridement of necrotic tissues and appropriate antibiotic use are adequate to control Rhizobium radiobacter infection in FG.