Clinical presentation and treatment of 2 patients with infection caused by Chromobacterium violaceum in Vietnam.

Chromobacterium violaceum is a rare but severe and often fatal cause of disease in humans. We present 2 clinical cases of sepsis and skin abscesses / cellulitis caused by C. violaceum seen in a referral hospital for infectious diseases in Vietnam. Both patients survived, but appropriate antibiotic treatment was only installed after culture of the organism. We reviewed and summarised the characteristics of C. violaceum infection and treatment.

"Demodicosis" Mimicking PreSeptal Cellulitis: Severe Periocular and Facial Inflammation Caused by "Normal" Skin Flora.

Due to their relatively high prevalence and commensalism, the pathogenicity of Demodex mites has been debated. Recent data, however, show Demodex to be associated with skin and ocular surface diseases such as rosacea, blepharitis, and keratitis. Here the authors report the first known case, to the best of the their knowledge, of Demodex infestation mimicking preseptal cellulitis in an adult human. A 29-year-old male bilaterally blind from advanced retinopathy of prematurity presented with a 2-month history of right-greater-than-left upper eyelid and periocular/cheek swelling, redness, and ocular discharge that did not resolve with oral antibiotics or oral steroids. Based on MRI findings, biopsies of the right lacrimal gland, right orbital fat, and right upper eyelid preseptal skin were obtained which revealed marked intrafollicular Demodex mite density and budding yeasts in the upper eyelid skin. This case serves to alert clinicians to this entity that may not otherwise be usually considered in ophthalmic clinical practice.

Cellulitis caused by Roseomonas mucosa in a child: a case report.

BACKGROUND: Roseomonas mucosa (R. mucosa) is a pink-pigmented, Gram-negative short rod bacterium. It is isolated from moist environments and skin, resistant to multiple drugs, including broad-spectrum cephalosporins, and a rare cause of infection with limited reports. R. mucosa mostly causes catheter-related bloodstream infections, with even fewer reports of skin and soft tissue infections. CASE PRESENTATION: A 10-year-old boy received topical steroid treatment for sebum-deficient eczema. A few days before the visit, he was bitten by an insect on the front of his right lower leg and scratched it due to itching. The day before the visit, redness, swelling, and mild pain in the same area were observed. Based on his symptoms, he was diagnosed with cellulitis. He was treated with sulfamethoxazole/trimethoprim, and his symptoms improved. Pus culture revealed R. mucosa. CONCLUSIONS: We report a rare case of cellulitis caused by R. mucosa. Infections caused by rare organisms that cause opportunistic infections, such as R. mucosa, should be considered in patients with compromised skin barrier function and regular topical steroid use. Gram stain detection of organisms other than Gram-positive cocci should be considered.

Helicobacter cinaedi Infection Presenting with Myalgia and Cellulitis.

BACKGROUND Helicobacter cinaedi is a rare bacterium, accounting for only 0.2% of the positive isolates in blood cultures. Previous reports note that patients with H. cinaedi infection often have underlying diseases. H. cinaedi infection is diagnosed by blood culture. However, because of the slow growth of this bacterium in blood culture, the diagnosis can be missed. CASE REPORT A 78-year-old man gradually developed erythema and pain in his left arm, then left shoulder and both lower legs. The patient presented to our hospital on day 17. He was afebrile, but the examination was remarkable for tenderness in both gastrocnemius muscles and erythema from the distal left lower leg to the ankle. We suspected pyomyositis and cellulitis and started oral administration of amoxicillin-clavulanate. On day 22, H. cinaedi was detected in blood cultures. Based on these findings, we diagnosed pyogenic myositis and cellulitis caused by H. cinaedi bacteremia. On day 24, antibiotic therapy was changed to intravenous ampicillin, and symptoms improved. Additional examination did not reveal any underlying immunodeficiency disorder, such as malignancy or HIV infection. CONCLUSIONS H. cinaedi infection can occur in healthy patients. Myalgia can be caused by pyogenic myositis because of bacteremia. In cases of myalgia or cellulitis of unknown etiology, blood cultures can be useful when bacteremia is suspected; blood samples should be monitored over an extended period.

Recurrent Cellulitis Revealing Helicobacter cinaedi in Patient on Ibrutinib Therapy, France.

Helicobacter cinaedi bacteremia caused recurring multifocal cellulitis in a patient in France who had chronic lymphocytic leukemia treated with ibrutinib. Diagnosis required extended blood culture incubation and sequencing of the entire 16S ribosomal RNA gene from single bacterial colonies. Clinicians should consider H. cinaedi infection in cases of recurrent cellulitis.

Necrotizing Soft-Tissue Infection of the Trunk Resulting From Wound Caused by a Centipede: A Case Report.

BACKGROUND Centipede envenomation is usually mild, but a review of the existing literature revealed a more serious course in a small proportion of patients. In fact, necrotizing soft-tissue infections have been reported following centipede stings in a small number of cases and require early diagnosis and treatment because of a high mortality rate. CASE REPORT A 78-year-old man was stung by a centipede on the left abdomen. Treatment with antimicrobial agents was started due to cellulitis, but extensive erythema developed from the left chest to the left buttock. Six days after being stung, he visited our hospital. Necrotizing soft-tissue infection was diagnosed and treated immediately with antibiotics and debridement on the left side of the abdomen and chest. Group A Streptococcus was detected in the fascia. The wound was left partially open and washed daily, resulting in gradual improvement of the wound condition. On hospitalization day 8, the open wound was able to be closed. Antimicrobial therapy was completed on hospitalization day 16. The patient showed good progress. CONCLUSIONS Centipede stings are not rare in tropical and subtropical regions, and most occurrences of centipede envenomation cause only local symptoms. However, we believe that even wounds caused by centipedes should be monitored, given the possibility of subsequent severe infection, as in the present case. In addition, the causative organisms identified in the present patient with necrotizing soft-tissue infection following a centipede sting were commensal bacteria of the skin. Future research is thus needed to clarify the relationship between these causative organisms and centipedes.

The spectrum, management and outcome of cellulitis in subtropical South Africa.

BACKGROUND: This study aimed to ascertain the microbiology, severity stratification, and clinical outcomes of cellulitis based on our current management for comparison with international reports. METHODS: A retrospective chart review was conducted of all patients with cellulitis treated by the department of surgery at Ngwelezana Hospital over an 18-month period. Severity of cellulitis was graded, and a comparison was made of the Eron and Modified Dundee classifications. Superficial swabs were taken for culture on patients who had cellulitis with open wounds or blisters. Culture results, antibiotics used, need for surgical intervention, and length of hospital stay were documented and analysed. RESULTS: One hundred and thirty-four patients had cellulitis. Severity grading for classes I-IV in the Eron classification was 3%, 57%, 39% and 1%, respectively, and for the Modified Dundee classification, 47%, 11%, 38%, and 4%, respectively. Co-amoxiclav was the most used antibiotic (73%). Superficial skin swabs were taken from 49 patients and 34 cultured 44 specific organisms. The most common organism identified was Staphylococcus aureus (30%). Several gram-negative and anaerobic organisms were cultured. Fifty-three patients required surgical debridement of the infected area and one patient required an above-knee amputation. Mean hospital stay for patients who did not receive surgical intervention was 6 days (IQR 3) and 7 days (IQR 4) for those who did. There were no deaths. CONCLUSION: The Dundee classification triages fewer patients as class 2 severity than the Eron system and its use has the potentail to reduce the number of patients hospitalised. Gram-positive organisms predominated in those cultured, but gram-negative cultures were frequent compared to other reported series. Co-amoxiclav is effective as first-line antimicrobial therapy in our environment.

Diagnostic and therapeutic challenges of treating opportunistic fungal cellulitis: a case series.

BACKGROUND: Cellulitis is an infection most commonly caused by bacteria and successfully treated with antibiotics. However, certain patient populations, especially the immunocompromised, are at risk for fungal cellulitis, which can be misidentified as bacterial cellulitis and contribute to significant morbidity and mortality. CASE PRESENTATIONS: We describe three cases of opportunistic fungal cellulitis in immunosuppressed patients that were initially mistaken for bacterial infections refractory to antibiotic therapy. However, atypical features of cellulitis ultimately prompted further diagnostics to identify fungal cellulitis and allow initiation of appropriate antifungals. We discuss: (1) a 52-year-old male immunosuppressed hematopoietic cell transplant recipient with Fusarium solani cellulitis on his right lower extremity that was treated with amphotericin B and voriconazole with full resolution of the cellulitis; (2) a 70-year-old male lung transplant recipient with Fusarium solani cellulitis on his left lower extremity that ultimately progressed despite antifungals; and (3) a 68-year-old male with a history of kidney transplantation with suspected Purpureocillium lilacinum cellulitis on his left lower extremity ultimately treated with posaconazole with resolution of the skin lesions. CONCLUSIONS: Fusarium solani and Purpureocillium lilacinum are important pathogens causing opportunistic fungal cellulitis. These cases remind providers to be vigilant for fungal cellulitis when skin and soft tissue infection does not adequately respond to antibiotics and atypical features of cellulitis are present.

[Soft tissue infections]. / Weichgewebeinfektionen.

Acute skin and soft tissue infections are among the most frequent infections in medicine. There is a broad spectrum including simple local infections as well as severe and life-threatening diseases. Along with Staphylococcus aureus, group A Streptococci are mainly responsible for these illnesses. The therapeutic approach ranges from antiseptic local treatments to administering systemic antibiotics or emergency surgery. Treating physicians often face challenges when presented with soft tissue infections due to a great discrepancy between the first impression of the disease compared to a possibly quick progression as well as the wide range of sometimes confusing historic terms and definitions being used in the English and German language, for instance pyoderma, erysipelas or phlegmon. A recently more popular collective term emphasized by clinical trials is "acute bacterial skin and skin structure infections" (ABSSSI).

Diagnosis and Management of Cellulitis and Abscess in the Emergency Department Setting: An Evidence-Based Review.

BACKGROUND: Cellulitis and abscess are a common reason for presentation to the emergency department, although there are several nuances to the care of these patients. OBJECTIVE: The purpose of this narrative review article was to provide a summary of the background, pathophysiology, diagnosis, and management of cellulitis and abscesses with a focus on emergency clinicians. DISCUSSION: The most common bacteria causing cellulitis are Staphylococcus aureus, Streptococcus pyogenes, and other ß-hemolytic streptococci, and methicillin-resistant S. aureus is most common in abscesses. The history and physical examination are helpful in differentiating cellulitis and abscess in many cases, and point-of-care ultrasound can be a useful tool in unclear cases. Treatment for cellulitis typically involves a penicillin or cephalosporin, and treatment of abscesses is incision and drainage. Loop drainage is preferred over the traditional incision and drainage technique, and adjunctive antibiotics can be considered. Most patients can be managed as outpatient. CONCLUSIONS: It is essential for emergency physicians to be aware of the current evidence regarding the diagnosis and management of patients with cellulitis and abscess.

Orbital cellulitis secondary to sinusitis in upstate New York: current incidence, seasonality, severity, management and outcomes.

PURPOSE: While sinusitis carries a seasonal variation, the temporal features of sinusitis-related orbital cellulitis (SRC) are unclear. This study analyzes the incidence, seasonality, management, and outcomes of SRC in northeastern New York. METHODS: A retrospective review of 79 patients was performed from January 2008 - December 2018. Cases of orbital cellulitis without comitant sinusitis were excluded. Demographic, radiographic, clinical features, month at presentation, interventions (surgical and nonsurgical), microbiology, and hospitalization duration were recorded. Fisher-exact test, Mann-Whitney test, and Kruskal Wallis test statistical analyses were performed in consultation with our institution's statistician via a dedicated software package (vassarstats.net). RESULTS: 79 patients were admitted for SRC. 25 patients were treated with antibiotics only, 31 underwent orbitotomy exclusively and 23 received combined orbitotomy and functional endoscopic sinus surgery (FESS). Of the 31 patients who underwent orbitotomy only, 8 (26%) returned to the operating room. In contrast, of those who underwent concomitant orbitotomy and FESS, only one patient (4.3%) required re-operation (fisher exact test, p = .021). The median length of stay for the antibiotic-only group (4 days), orbitotomy-only group (6 days), and combined surgery group (5 days) were statistically different (Kruskal Wallis, p = .004, Figure 3). Interestingly, there was no significant relationship of incidence or severity of SRC related to seasonality (fisher-exact test, p = .76). CONCLUSION: Our findings suggest that cases requiring surgical management for SRC should undergo coinitial orbitotomy with FESS to reduce re-operation rates. Additionally, SRC incidence and severity did not correlate with season.

Cellulitis: A Review of Current Practice Guidelines and Differentiation from Pseudocellulitis.

Cellulitis, an infection involving the deep dermis and subcutaneous tissue, is the most common reason for skin-related hospitalization and is seen by clinicians across various disciplines in the inpatient, outpatient, and emergency room settings, but it can present as a diagnostic and therapeutic challenge. Cellulitis is a clinical diagnosis based on the history of present illness and physical examination and lacks a gold standard for diagnosis. Clinical presentation with acute onset of redness, warmth, swelling, and tenderness and pain is typical. However, cellulitis can be difficult to diagnose due to a number of infectious and non-infectious clinical mimickers such as venous stasis dermatitis, contact dermatitis, eczema, lymphedema, and erythema migrans. Microbiological diagnosis is often unobtainable due to poor sensitivity of culture specimens. The majority of non-purulent, uncomplicated cases of cellulitis are caused by ß-hemolytic streptococci or methicillin-sensitive Staphylococcus aureus, and appropriate targeted coverage of this pathogen with oral antibiotics such as penicillin, amoxicillin, and cephalexin is sufficient. Even with rising rates of community-acquired methicillin-resistant Staphylococcus aureus, coverage for non-purulent cellulitis is generally not recommended.

Cellulitis-related Rhodococcus equi in a cat harboring VAPA-type plasmid pattern.

Rhodococcus equi is a well-known intracellular facultative bacterium that is opportunistic in nature, and a contagious disease-causing agent of pyogranulomatous infections in humans and multihost animals. Feline rhodococcosis is an uncommon or unnoticed clinical condition, in which the organism is usually refractory to conventional antimicrobial therapy. The pathogenicity of the agent is intimately associated with plasmid-governed infectivity, which is attributed to the presence of plasmid-encoded virulence-associated proteins (Vap). Three host-adapted virulence plasmid types (VAPs) have been distinguished to date: pVAPA, pVAPB, and pVAPN, whose infections are related to equine, pig, and bovine or caprine origin, respectively, while humans are infected by all three VAP types. Most virulence studies with R. equi plasmid types in animals involve livestock species. Conversely, data on the pathogenicity and human relevance of the virulence plasmid profile of R. equi isolated from cats remains unclear. This report describes a case of cellulitis-related R. equi that harbors the pVAPA-type in a cat with cutaneous lesion. Long-term therapy of the cat using marbofloxacin, a broad-spectrum third-generation fluoroquinolone, resulted effectiveness. pVAPA is a host-adapted virulent type that has been associated predominantly with pulmonary foal infections. Our cat had a history of contact with other cats, livestock (including horses), and farm environment that could have favored the transmission of the pathogen. Besides no clear evidence of cat-to-humans transmission of the pathogen, the identification of R. equi harboring pVAPA-type in a cat with cutaneous abscessed lesion represent relevance in human health because this virulent type has been described in people worldwide with clinical rhodococcal disorders.

Combination of antibiotics, gastric lavage and nasojejunal feeding-an effective alternative for the management of acute phlegmonous gastritis: a case report.

BACKGROUND: Phlegmonous gastritis is a rare bacterial infection of the gastric wall, characterised by purulent inflammation of the gastric mucosa, submucosa and muscularis layers. Phlegmonous gastritis has a high mortality rate, even with correct diagnosis and antimicrobial therapy. CASE PRESENTATION: A 22-year-old man presented for acute epigastric pain associated with aqueous diarrhoea, vomiting and sustained fever. Abdominal computed tomography showed diffuse oedema and thickened gastric wall, increased number and size of abdominal lymph nodes and the absence of pneumoperitoneum. Fibregastroscopy revealed oedematous, ridged and thickened gastric mucosa with abundant purulent secretion, especially in the antrum, consistent with phlegmonous gastritis, which was confirmed by histological evaluation of gastric biopsies. Cultures of the tissue biopsies and purulent secretion were positive for Enterococcus cecorum. He was treated with sensitive antibiotics according to the antibiogram, and importantly, with continuous gastric lavage and individualised nutritional support therapy. He eventually recovered well and was discharged with no abdominal symptoms. CONCLUSIONS: Our case indicates that early diagnosis and immediate treatment are crucial to achieve positive outcomes. The combination of sensitive antibiotics, gastric lavage and early enteral nutrition via nasojejunal feeding might be an effective alternative for the comprehensive treatment of acute phlegmonous gastritis.

Sex differences in hospitalized adult patients with cellulitis: A prospective, multicenter study.

OBJECTIVES: Sex differences in adult cellulitis, a frequent cause of hospitalization, have not been analyzed. These differences were investigated in a large cellulitis series. METHODS: This was a prospective observational study of 606 Spanish hospitalized cellulitis patients. Different comorbidities, clinical, diagnostic, and treatment data were compared between the sexes. Multiple logistic regression modeling was performed to determine the variables independently associated with sex. RESULTS: Overall 606 adult cellulitis patients were enrolled; 314 (51.8%) were male and 292 (48.2%) were female. Females were older (mean age 68.8 vs 58.9 years, p < 0.0001), less likely to have prior wounds (p = 0.02), and more likely to have venous insufficiency (p = 0.0002) and edema/lymphedema (p = 0.0003) than males. The location of the infection differed between the sexes (p = 0.02). Males were more likely to have positive pus cultures (p = 0.0008), the causing agent identified (p = 0.04), and higher rates of Staphylococcus aureus infection (p = 0.04) and received longer antibiotic treatment (p = 0.03). Factors independently associated with female sex in the multivariate analysis were older age (p < 0.0001), prior cellulitis (p = 0.01), presence of edema/lymphedema as the predisposing factor (p = 0.004), negative versus positive pus culture (p = 0.0002), and location of cellulitis other than in the lower extremities (p = 0.035). CONCLUSIONS: Differences between male and female patients with cellulitis were age, recurrence, presence of edema/lymphedema, positivity of pus culture, and topography of the infection.

Cellulitis.

Cellulitis is a common infection of the skin and subcutaneous tissue caused predominantly by gram-positive organisms. Risk factors include prior episodes of cellulitis, cutaneous lesions, tinea pedis, and chronic edema. Cellulitis is a clinical diagnosis and presents with localized skin erythema, edema, warmth, and tenderness. Uncomplicated cellulitis can be managed in the outpatient setting with oral antibiotics. Imaging often is not required but can be helpful. Recurrent cellulitis is common and predisposing conditions should be assessed for and treated at the time of initial diagnosis. For patients with frequent recurrences despite management of underlying conditions, antimicrobial prophylaxis can be effective.