Microbiology and management of peritonsillar, retropharyngeal, and parapharyngeal abscesses

Application of metagenomic next-generation sequencing in treatment guidance for deep neck space abscess

BACKGROUND

Infectious etiologies of deep neck space abscess (DNSA) by conventional culture tests can be challenging, which also leads to frequent irrational antibiotic usage. Metagenomic next-generation sequencing (mNGS), as a novel method for analyzing the complex microbial ecosystem from clinical samples, has been utilized in clinical research and practice of various infectious diseases but deep neck space abscess. We here aimed to explore the clinical value of mNGS for pathogen detection and treatment guidance in DNSA patients compared with conventional culture tests.

METHODS

One hundred six patients diagnosed with DNSA were retrospectively enrolled and allocated into mNGS group and culture group according to whether mNGS was conducted. The pathogen detection effectiveness was of mNGS was compared with conventional culture. Effectiveness of mNGS-modified antimicrobial therapy was evaluated by comparing the treatment outcomes between two groups.

RESULTS

mNGS showed a significantly higher detection rate than conventional culture (p < 0.05) with faster result acquisition. Treatment success rate of patients in the mNGS group was significantly higher than in the culture group (RR: 1.22, 95%CI: 1.07-1.82, p = 0.033). Besides, patients in the mNGS group had shorter duration of irrational antimicrobial therapy, shorter hospital stay and less medical costs (p < 0.05).

CONCLUSIONS

mNGS is an effective technology for facilitating pathogen detection and improving treatment outcomes of DNSA patients.

Pathogens and Prognosis of Deep Neck Infection in Patients With Liver Cirrhosis

OBJECTIVE

This study aims to investigate the differences in pathogenic bacterial spectra between patients with deep neck infection (DNI) with and without liver cirrhosis (LC). The goal is to identify specific pathogens prevalent in LC-DNI to guide the selection of empiric antibiotics, improving treatment outcomes and prognosis.

STUDY DESIGN

This is a retrospective study.

METHODS

The Chang Gung Research Database (CGRD) is a deidentified medical database encompassing seven hospitals within Taiwan's largest medical system. We analyzed data from 2004 to 2018 on DNI patients hospitalized with or without LC, categorizing them into these two groups. This study primarily focused on comparing the bacterial culture results of these groups, alongside an analysis of their treatment modalities (medication alone or surgery) and prognostic outcomes.

RESULTS

From a total of 11,455 DNI patients identified in the CGRD, 76 LC-DNI patients and 11,178 non-LC-DNI patients met the inclusion criteria after exclusions. The LC group had significantly higher rates of surgical debridement (34.2% vs. 19.4%, p = 0.002), ICU admission (22.4% vs. 10.7%, p = 0.004), and mediastinal complications (7.9% vs. 2.1%, p = 0.005). Although the overall mortality rates were not significantly different between the two groups (6.6% vs. 4.6%, p = 0.401), the mediastinitis-related mortality rate was significantly higher in the LC-DNI group (2.6% vs. 0.2%, p = 0.015). Bacterial culture analysis revealed that LC-DNI patients predominantly presented with Klebsiella pneumoniae (KP) as the primary facultative anaerobic pathogen, whereas non-LC-DNI patients were most infected with Viridans streptococcus (VS). For anaerobic bacteria, both groups consistently cultured Peptostreptococcus micros and Prevotella intermedia as the predominant species.

CONCLUSIONS

LC-DNI patients are predominantly infected with KP, a Gram-negative bacillus, unlike the Gram-positive cocci, VS, in non-LC-DNI. Anaerobic pathogens were similar in both groups. Empiric antibiotics for LC-DNI should target KP and anaerobes to improve outcomes.

LEVEL OF EVIDENCE

3 Laryngoscope, 2025.

An uncommon cause of retropharyngeal abscess in adults: Cervical pyogenic spondylodiscitis

INTRODUCTION AND IMPORTANCE

Retropharyngeal abscess (RPA) represents a rare and life-threatening condition, particularly uncommon in the adult population. The simultaneous occurrence of RPA, and cervical spondylodiscitis is an exceedingly infrequent situation.

CASE PRESENTATION

we reported the case of a 67-year-old male who presented to our department with complaints of sore throat, restricted neck range of motion, as well as numbness and weakness in the right arm persisting for two weeks. Cervical computed tomography identified a retropharyngeal abscess measuring 15 cm in height around C3 to D3. Subsequent cervical magnetic resonance imaging disclosed revealed infectious spondylodiscitis at C5-C6-C7 and partially collected epiduritis from C5 to C7. The abscess was promptly drained by the transoral way. Following the procedures, the patient was discharged with a cervical collar and a prescribed course of antibiotics.

CLINICAL DISCUSSION

Cervical retropharyngeal abscesses complicating spondylodiscitis is very rare. The clinical symptoms are variable and nonspecific. Given the potentially life-threatening nature of this condition, its management represents a real challenge.

CONCLUSION

The management of such complex cases necessitates a multidisciplinary approach involving otolaryngologists, neurosurgeons, and infectious disease specialists to mitigate the risk of complications and prevent any potential delays in treatment.

Cytobacteriological testing of drainage pus from peritonsillar abscess is not contributive in clinical practice: A STROBE analysis

PURPOSE

Peritonsillar abscess (PTA) is a frequent pathology. Treatment consists in drainage of the collection, associated to probabilistic antibiotic therapy. The usefulness of cytobacteriological testing (CBT) of the drainage pus is controversial.

MATERIAL AND METHODS

A retrospective study of patients managed for PTA between 2013 and 2020 in our university hospital was performed. The main objective was to assess the usefulness of CBT in the management of PTA. The secondary objectives were to determine the bacteriological profile involved in the onset of PTA and to assess the rate of bacterial resistance to antibiotics prescribed on a probabilistic basis.

RESULTS

The study included 207 patients: 70 outpatients (33%) and 137 inpatients (67%). Probabilistic antibiotic therapy was implemented in 100% of patients. CBT was performed systematically and was negative in 106 patients, revealing oropharyngeal flora in 40% of cases, polymicrobial flora in 50% and sterile samples in 10%. In the 101 patients with positive CBT, the bacteria isolated were penicillin-sensitive in 99%. All patients were successfully treated. In the light of the bacteriological results, no changes were made to the probabilistic antibiotic therapy introduced on admission.

CONCLUSION

CBT on drainage pus had no impact on the management of PTA. CBT is therefore unnecessary in patients with no comorbidities and no signs of severity at admission.

The Impact of COVID-19 Restrictions on Hospital Admissions of Common Head and Neck Infections

INTRODUCTION

Following the emergence of COVID-19, multiple preventative measures were implemented to limit the spread of the disease. This study aims to elucidate the impact of COVID-19 restrictions on hospital admissions of otolaryngology-related infections.

MATERIALS AND METHODS

A retrospective chart review was conducted to capture all admissions for otolaryngology-related infections in the 2 years pre- and post-COVID-19 at the Health Sciences Centre in Winnipeg, Manitoba. These infections included croup, tracheitis, neck abscess, peritonsillar abscess, otitis media, mastoiditis, sinus infection, orbital infection, pharyngotonsillitis, retro/parapharyngeal abscess, and acute epiglottitis. Demographic information and admission details were collected and analyzed to compare pre- and post-COVID-19 admissions. Further analysis was conducted to compare hospital admissions of patients from rural/remote regions.

RESULTS

Between March 2018 and March 2022, 253 pediatric patients and 197 adults were admitted for otolaryngology-related infections. Total pediatric admissions decreased post-COVID-19 (154 pre-COVID-19, 99 post-COVID-19; p < 0.001) whereas adult admissions remained stable (107 pre-COVID-19, 90 post-COVID-19; p = 0.25). No significant difference in mean patient age, admission duration, surgical rates or in the proportion of admissions from patients from rural/remote regions was observed in the pediatric or adult cohort when comparing pre-COVID-19 data to post-COVID-19 data. Diagnosis-specific changes in admissions were observed in pediatric croup (40 pre-COVID-19, 15 post-COVID-19; p < 0.001) and in adult orbital infections (30 pre-COVID-19, six post-COVID-19; p < 0.001).

CONCLUSION

Following the implementation of COVID-19 restrictions, there was a decrease in admissions due to pediatric croup and adult orbital infections with an overall decrease in pediatric Otolaryngology-infection related admissions.

LEVEL OF EVIDENCE

3 Laryngoscope, 134:3542-3547, 2024.

Chronic Sphenoiditis With Deep Neck Space Extension: Case Report With Review of the Literature and Postulated Mechanisms for Extracranial Extension

Isolated primary sphenoid sinusitis is a rare occurrence, estimated to make up less than 3% of sinus infections. The posterior anatomic location of the sphenoid makes treatment challenging when it becomes infected. Complications involving intracranial extension to surrounding structures often result in cranial nerve deficits due to their proximity. A single case of chronic sphenoiditis with direct extracranial extension into the prevertebral space is reported with a discussion on clinical presentation, diagnosis, and management. A 46-year-old female patient with diffuse headaches radiating into the neck and throat was evaluated in the office. Computed tomography demonstrated sphenoiditis with direct extension into the prevertebral space. Imaging revealed a purported route of direct extension through the clinoid and directly into the clivus to form an abscess in the longus colli muscle. The patient underwent endoscopic surgical management including drainage of the prevertebral abscess and has since made a full recovery. This is the first reported case of direct extension of sphenoiditis into the prevertebral space. The findings highlight the importance of aggressive treatment of chronic sphenoid infections to prevent detrimental complications. Computed tomography imaging proved an advantageous imaging modality to demonstrate bony erosion and sinus tracts from the skull base to the deep neck space.

From fever to action: diagnosis, treatment, and prevention of acute undifferentiated febrile illnesses

Acute Undifferentiated Febrile Illness (AUFI) presents a clinical challenge, often characterized by sudden fever, non-specific symptoms, and potential life-threatening implications. This review highlights the global prevalence, types, challenges, and implications of AUFI, especially in tropical and subtropical regions where infectious diseases thrive. It delves into the difficulties in diagnosis, prevalence rates, regional variations, and potential causes, ranging from bacterial and viral infections to zoonotic diseases. Furthermore, it explores treatment strategies, preventive measures, and the critical role of the One Health approach in addressing AUFI. The paper also addresses the emerging zoonotic risks and ongoing outbreaks, including COVID-19, Rickettsia spp., and other novel pathogens, emphasizing their impact on AUFI diagnosis and management. Challenges in resource-limited settings are analyzed, highlighting the need for bolstered healthcare infrastructure, enhanced diagnostics, and collaborative One Health strategies. Amidst the complexity of emerging zoonotic threats, this review underscores the urgency for a multifaceted approach to mitigate the growing burden of AUFI, ensuring early diagnosis, appropriate treatment, and effective prevention strategies.

[Disproving the myth of "abscess weather" predisposing to peritonsillitis and peritonsillar abscess]

BACKGROUND

Peritonsillar abscess (PTA) is often seen as a complication of acute tonsillitis and is defined as pus retention between the tonsillar capsule and the peritonsillar tissue. The etiology and pathogenesis have not yet been fully elucidated. A connection between certain weather conditions and temperature fluctuations and the occurrence of abscesses in the head and neck region has been discussed for years. The question here is whether higher temperature fluctuations are predisposing for the formation of abscesses.

MATERIALS AND METHODS

A retrospective evaluation of all patients hospitalized with peritonsillitis or PTA in the Department of Otorhinolaryngology of the Klinikum Rechts der Isar of the Technical University of Munich during a period of 10 years (2012-2021) was performed. Each patient was individually correlated with daily temperature data from the statistical meteorological office of the City of Munich.

RESULTS

A total of 1450 patients were included, 270 patients (18.62%) with peritonsillitis and 1180 patients (81.38%) with PTA. A correlation between the occurrence of peritonsillitis or PTA and major temperature fluctuations could be excluded in this large patient population. Moreover, a similar frequency of peritonsillitis and PTA was seen throughout the year.

CONCLUSION

The myth of a temperature dependence of the development of peritonsillitis or PTA and a so-called abscess weather could be negated in this study.

Deep Neck Infection: A Case of Retropharyngeal Abscess

The incidence of retropharyngeal abscesses has been decreasing since the introduction of antibiotic therapy, and it is currently a rare diagnosis in adults, although there are some recent cases in the literature. Given its seriousness, if not treated promptly, the infection can progress rapidly and its complications can be fatal, making it a serious health problem. A 79-year-old woman presented at her primary care center with complaints of persistent odynophagia for about two weeks and rapidly progressive dysphagia in five days, initially for solids and later for solids and liquids. On observation, she had difficulty swallowing saliva and presented a painful mass in the bilateral anterior submental and anterior cervical region. Due to the rapid progression of symptoms and the findings of the physical examination, the patient was referred to the emergency department for a suspected abscess or cervical mass. In the emergency department, a cervical CT scan was performed, which revealed a retropharyngeal abscess measuring approximately 7 x 6 x 4 cm, involving the right carotid artery and internal jugular vein, with compression of the internal jugular vein. The patient was admitted to the otorhinolaryngology department, where intravenous antibiotic therapy with third-generation cephalosporin and clindamycin was initiated. She underwent exploration in the operating room to determine the cause of the abscess and transoral drainage of the already spontaneously draining abscess. After completing antibiotic therapy, a follow-up CT scan showed complete resolution of the abscess without suggestive masses of neoplasm or foreign bodies, therefore, the cause of the abscess has not been identified.  The most frequent cause of retropharyngeal abscess in adults is dental septic foci and another commonly described cause is the ingestion of foreign bodies such as fish bones or chicken bones. Early diagnosis of this condition is crucial, as delays in treatment initiation can lead to the progression of infection into the deep cervical spaces, resulting in serious complications such as mediastinitis, pericarditis, jugular vein thrombosis, sepsis, laryngeal edema, conditions with a high degree of morbidity and mortality. Therefore, it is important for any doctor to be aware of warning signs and symptoms in patients who present such symptoms, especially primary care doctors, who are the first gateway to health services and to whom patients often turn first. This case report shows the importance of suspicion and subsequent referral for timely diagnosis and treatment.

Pictorial Review of MRI Findings in Acute Neck Infections in Children

Pediatric neck infections and their complications, such as abscesses extending to deep neck compartments, are potentially life-threatening acute conditions. Medical imaging aims to verify abscesses and their extensions and exclude other complications. Magnetic resonance imaging (MRI) has proven to be a useful and highly accurate imaging method in acute neck infections in children. Children and adults differ in terms of the types of acute infections and the anatomy and function of the neck. This pictorial review summarizes typical findings in pediatric patients with neck infections and discusses some difficulties related to image interpretation.

The assessment and management of deep neck space infections in adults: A systematic review and qualitative evidence synthesis

OBJECTIVES

To summarise current practices in the diagnosis and management of deep neck space infections (DNSIs). To inform future studies in developing a framework in the management of DNSIs.

DESIGN

This review was registered on PROSPERO (CRD42021226449) and reported in line with PRISMA guidelines. All studies from 2000 that reported the investigation or management of DNSI were included. The search was limited to English language only. Databases searched included AMED, Embase, Medline and HMIC. Quantitative analysis was undertaken with descriptive statistics and frequency synthesis with two independent reviewers. A qualitative narrative synthesis was conducted using a thematic analysis approach.

SETTING

Secondary or tertiary care centres that undertook management of DNSIs.

PARTICIPANTS

All adult patients with a DNSI.

MAIN OUTCOME MEASURES

The role of imaging, radiologically guided aspiration and surgical drainage in DNSIs.

RESULTS

Sixty studies were reviewed. Thirty-one studies reported on imaging modality, 51 studies reported treatment modality. Aside from a single randomised controlled trial, all other studies were observational (n = 25) or case series (n = 36). Computer tomography (CT) was used to diagnose DNSI in 78% of patients. The mean percentage of management with open surgical drainage was 81% and 29.4% for radiologically guided aspiration, respectively. Qualitative analysis identified seven major themes on DNSI.

CONCLUSIONS

There are limited methodologically rigorous studies investigating DNSIs. CT imaging was the most used imaging modality. Surgical drainage was commonest treatment choice. Areas of further research on epidemiology, reporting guidelines and management are required.

Acute Retropharyngeal and Parapharyngeal Abscesses: A Case Series

OBJECTIVE

The purpose of this study was to evaluate the diagnosis circumstances, predisposing factors, investigations, and therapeutic management of retropharyngeal and parapharyngeal abscesses.

METHODS

A retrospective chart review of patients diagnosed with retropharyngeal or parapharyngeal abscess from 2001 to 2021 was performed. Epidemiological characteristics, clinical signs, investigations, medical treatment, and surgical interventions were analyzed for each patient.

RESULTS

A total of 30 patients with retropharyngeal or parapharyngeal abscess were identified. Computed tomography was performed in all cases, and magnetic resonance imaging was performed in three cases. Twelve patients had a "pure" retropharyngeal abscess, nine patients had a prestyloid abscess, one patient had a prestyloid abscess associated with a peritonsillar abscess, three patients had a retrostyloid abscess, and five patients had a prestyloid abscess associated with a retropharyngeal abscess or a retrostyloid abscess. The median long axis of the abscess was 42 cm. All patients received intravenous antibiotics for a median period of 8 days [4-30]. Seventeen patients required surgical trans-cervical drainage. Other patients underwent transoral or transnasal drainage. The pus culture revealed no growth in six cases, streptococcus (four cases), methicillin-sensitive Staphylococcus aureus (two cases), Klebsiella (two cases), Enterobacter (one case), Fungi (two cases), and Mycobacterium tuberculosis (a twelve-year-old boy). It was not documented in twelve cases. Histological examination revealed caseofollicular tuberculosis in a 53-year-old man. In 25 patients, no adverse events were observed during follow-up. Five patients had an unfavorable outcome.

CONCLUSION

We have found an increase in the incidence of these infections in recent years. Computed tomography is the best imaging examination for the diagnosis and follow-up of retropharyngeal and parapharyngeal abscess. Early drainage and antimicrobial therapy are essential for rapid recovery and prevention of complications of these abscesses.

Streptococcus equi subsp. equi in Retropharyngeal Abscess: Case Report and Review of Literature

Retropharyngeal abscesses (RPAs) represent the group of deep space infections of the neck. Although RPA is a well-known condition, some aspects of it still may be challenging. Localization, symptoms, and etiology may confuse even the most experienced physicians. S. equi subspecies are zoonotic agents and cause multiple diseases in diverse animals. Infections in humans are rare. This report presents an extremely rare case of retropharyngeal abscess in a 12-year-old girl caused by an infection of Streptococcus equi subsp. equi.

Peritonsillar abscess: an 8-year retrospective, culture based evaluation of 208 cases

Introduction. Peritonsillar abscess (PTA) is a common infection which requires surgical intervention and suitable antibiotic therapy.

Hypotheses/Gap Statement. Beside Streptococcus pyogenes and Fusobacterium necrophorum several other mostly anaerobic bacteria can be cultured from the properly taken pus samples of PTA, the clinical significance of which is still not fully understood.

Aim. This study focused on the culture-based microbiological evaluation of PTA cases, compared to surgical intervention and empirical antibiotic management.

Methodology. A retrospective analysis of PTA cases was performed between 2012 and 2019. Data about the aerobic and anaerobic culture results of the samples taken during different surgical interventions were summarized and the coverage of the empirically selected antibiotics was evaluated. The patient’s history, the development of complications and the recurrence rate were also evaluated.

Results. The microbiological culture results were available for 208 of 320 patients with clinically diagnosed PTA. Incision and drainage (I and D) and immediate tonsillectomy were the leading surgical interventions. Ninety-five Fusobacterium species (including 44 Fusobacterium necrophorum ), 52 Actinomyces species and 47 Streptococcus pyogenes were obtained from PTA samples alone or together with polymicrobial flora. S. pyogenes (33.7 %, n=28) and F. necrophorum (22.9 %, n=19) were the dominating pathogens in the 83 monobacterial PTA samples. In >60 % of the patients polymicrobial infection was demonstrated, involving a great variety of anaerobic bacteria. In 22 out of 42 cases where intravenous cefuroxime was empirically started, the therapy should be changed to properly cover the culture-proven anaerobic flora. There were no serious complications, abscess recurrence was detected in two cases (0.96 %).

Conclusion. PTAs are often polymicrobial infections including a great variety of anaerobes. Targeted antibiotic therapy, in conjunction with adequate surgical drainage eliminating the anaerobic milieu, can accelerate the healing process and radically reduce the complication and recurrence rate.

Retropharyngeal, Parapharyngeal and Peritonsillar Abscesses

Deep neck infections (DNIs) include all the infections sited in the potential spaces and fascial planes of the neck within the limits of the deep layer of the cervical fascia. Parapharyngeal and retropharyngeal infections leading to parapharyngeal abscess (PPA) and retropharyngeal abscess (RPA) are the most common. DNIs remain an important health problem, especially in children. The aim of this narrative review is to describe the management of peritonsillar, retropharyngeal and parapharyngeal abscesses in pediatric age. Despite relatively uncommon, pediatric DNIs deserve particular attention as they can have a very severe course and lead to hospitalization, admission to the intensive care unit and, although very rarely, death. They generally follow a mild upper respiratory infection and can initially present with signs and symptoms that could be underestimated. A definite diagnosis can be made using imaging techniques. Pus collection from the site of infection, when possible, is strongly recommended for definition of diseases etiology. Blood tests that measure the inflammatory response of the patient may contribute to monitor disease evolution. The therapeutic approach should be targeted toward the individual patient. Regardless of the surgical treatment, antibiotics are critical for pediatric DNI prognosis. The diagnostic-therapeutic procedure to be followed in the individual patient is not universally shared because it has not been established which is the most valid radiological approach and which are the criteria to be followed for the differentiation of cases to be treated only with antibiotics and those in which surgery is mandatory. Further studies are needed to ensure the best possible care for all children with DNIs, especially in this era of increased antimicrobial resistance.

Factors Affecting Patients with Concurrent Deep Neck Infection and Cervical Necrotizing Fasciitis

Deep neck infection (DNI) is a severe disease of the deep neck spaces, which has the potential for airway obstruction. Cervical necrotizing fasciitis (CNF) is a fatal infection of the diffuse soft tissues and fascia with a high mortality rate. This study investigated risk factors in patients with concurrent DNI and CNF. A total of 556 patients with DNI were included in this study between August 2016 and December 2021. Among these patients, 31 had concurrent DNI and CNF. The relevant clinical variables were assessed. In univariate analysis, age (> 60 years, odds ratio (OR) = 2.491, p = 0.014), C-reactive protein (CRP, OR = 1.007, p < 0.001), blood sugar (OR = 1.007, p < 0.001), and diabetes mellitus (DM, OR = 4.017, p < 0.001) were significant risk factors for concurrent DNI and CNF. In multivariate analysis, CRP (OR = 1.006, p < 0.001) and blood sugar (OR = 1.006, p = 0.002) were independent risk factors in patients with concurrent DNI and CNF. There were significant differences in the length of hospital stay and therapeutic management (intubation, tracheostomy, incision and drainage) between DNI patients with and without CNF (all p < 0.05). While there were no differences in pathogens between the DNI alone and concurrent DNI and CNF groups (all p > 0.05), the rate of specific pathogen non-growth from blood cultures was 16.95% (89/525) in the DNI alone group, in contrast to 0% (0/31) in the concurrent DNI and CNF group (p = 0.008). Higher CRP and blood sugar levels were independent risk factors for the concurrence of DNI and CNF. With regard to prognosis, there were significant differences in the length of hospital stay and therapeutic management between the groups with and without CNF. While there were no significant differences in pathogens (all p > 0.05), no cases in the concurrent DNI and CNF group showed specific pathogen non-growth, in contrast to 89/525 patients in the group with DNI alone.

Deep Neck Abscesses in Children: An Italian Retrospective Study

BACKGROUND

Retropharyngeal and parapharyngeal abscesses (RPAs, PPAs) usually affect young children. Surgical drainage and/or antibiotic therapy are treatment of choice, but no specific guidelines exist. In order to reduce the risk of severe complications, appropriate diagnosis and therapy are necessary. The aims of the study were to review diagnosis and management of children with RPAs/PPAs and to compare surgical versus medical approach.

METHODS

This is a multicenter retrospective study including all patients younger than 15 years admitted at 4 Italian pediatric hospitals of Florence, Padua, Rome, and Treviso, with International Classification of Diseases, Ninth Revision discharge diagnosis code of RPAs and PPAs, from January 1, 2008, to December 31, 2016.

RESULTS

One hundred fifty-three children were included. The median age was 4.4 years, with overall male predominance. Heterogeneous signs and symptoms (fever, neck cervical, lymphadenopathy, pain, and stiff neck most frequently) and a large mixture of bacteria from pus cultures were detected. Computer tomography (66.7%) and magnetic resonance imaging (27.5%) were performed to confirm the presence of abscess. Fifty-one percent of abscesses were greater than 3 cm. Eighty-seven patients (56.9%) underwent surgery, and 66 (43.1%) were treated with antibiotics alone (mostly ceftriaxone, metronidazole, amikacin, and clindamycin) with median days of therapy of 26.5 days and length of therapy of 16.0 days of median. Median length of stay was 11 days. None had severe complications. Multivariate analysis indicated as independent predictive factors of surgery abscess of 3 cm or greater, high white blood cell count, and-most of all-the hospital of admission.

CONCLUSIONS

Deep neck abscesses mostly affect patients in early childhood, with a combination of nonspecific signs and symptoms, and it still emerges as a heterogeneous approach in diagnosis and management of these infections. Thus, common shared protocols represent an essential tool in order to standardize care and improve patients' outcomes.

Pathogens and Prognosis of Deep Neck Infection in End-Stage Renal Disease Patients

OBJECTIVES/HYPOTHESIS

To examine the pathogenic bacterial spectra and prognosis of deep neck infection (DNI) in end-stage renal disease (ESRD) patients.

STUDY DESIGN

Retrospective study.

METHODS

Patients diagnosed with DNI between 2004 and 2015 in Chang Gung Memorial Hospital were enrolled and divided into three groups, namely ESRD-DNI, chronic kidney disease (CKD)-DNI, and non-CKD-DNI. Differences in pathogenic bacteria, treatment, and prognosis were compared across the three groups.

RESULTS

The bacterial spectra differed among the three groups. The main three facultative anaerobic or aerobic bacteria causing ESRD-DNIs were methicillin-resistant Staphylococcus aureus (MRSA; 25.4%), methicillin-susceptible S. aureus (MSSA; 14.1%), and Klebsiella pneumoniae (KP; 12.7%). For CKD-DNIs, they were KP (23.5%), Viridans streptococci (VS; 23.5%), and MSSA (14.7%). For non-CKD-DNIs, they were VS (31.7%), KP (17.2%), and coagulase-negative staphylococci (8.0%). Compared with the other groups, the ESRD-DNI group had higher white blood cell and C-reactive protein levels, longer hospital stays, more frequent admissions to the intensive care unit, more mediastinal complications, and a significantly higher mortality rate.

CONCLUSIONS

The ESRD-DNI group exhibited more severe disease activity and higher mortality compared with those of the CKD-DNI and non-CKD-DNI groups. MRSA was the leading pathogen for patients with ESRD-DNI. Physicians must implement strategies for the early detection of MRSA to accurately prescribe antibiotics and prevent nosocomial transmission.

LEVEL OF EVIDENCE

4 Laryngoscope, 2021.

Ubi pus, ibi evacua: a review of 601 peritonsillar abscess adult cases

Background

Peritonsillar abscess (PTA) is the most common deep neck infection, occurring as a consequence of bacterial acute tonsillitis or as a result of infection of the Weber glands, with frequent and life-threatening complications.

Aim

To investigate several factors associated with complications and worse prognosis, such as defining the method of surgical drainage and treatment of a PTA which remains an area of controversy in the literature

Methods

The purpose of this retrospective study is to examine the epidemiological, clinical, and laboratory findings of 601 adult patients and to discuss them along with their treatment plan.

Results

Pharyngalgia was the most common reported symptom, followed by trismus, odynophagia, fever, hot potato voice, malaise, and cervical lymphadenopathy. Sixty-eight patients developed complications. Streptococcus species were the most common pathogens. A statistically significant difference was found in days of hospitalization, WBC and CRP levels, age, and the pre-existing systemic diseases between patients with and without complications. A comparison of patients treated with intravenous and oral antibiotics revealed no statistically significant difference.

Conclusion

Οver 10% of PTA cases may develop complications, the most common of which is extension into deep neck spaces. Comorbid conditions increase the risk of complications. Despite the wide range of treatment strategies, incision and drainage remain the cornerstone of surgical treatment. In patients with no comorbidities, intravenous antibiotics appear to have no advantage over oral antibiotics.

The Pathogenic Bacteria of Deep Neck Infection in Patients with Type 1 Diabetes, Type 2 Diabetes, and Without Diabetes from Chang Gung Research Database

Deep neck infection (DNI) is a lethal emergent condition. Patients with types 1 and 2 diabetes mellitus (T1DM and T2DM, respectively) are predisposed to DNI and have poorer prognoses. The mainstay of the treatment is surgical drainage and antibiotics; however, the pathogenic bacteria of T1DM-DNI have not been studied before. We obtained the data of 8237 patients with DNI who were hospitalized from 2004 to 2015 from the Chang Gung Research Database, which contains multi-institutional medical records in Taiwan. Using diagnostic codes, we classified them into T1DM-DNI, T2DM-DNI, and non-DM-DNI and analyzed their pathogenic bacteria, disease severity, treatment, and prognosis. The top three facultative anaerobic or aerobic bacteria of T1DM-DNI were Klebsiella pneumoniae (KP, 40.0%), Viridans Streptococci (VS, 22.2%), and methicillin-sensitive Staphylococcus aureus (MSSA, 8.9%), similar for T2DM (KP, 32.2%; VS, 23.3%; MSSA, 9.5%). For non-DM-DNI, it was VS (34.6%), KP (9.8%), and coagulase-negative Staphylococci (8.7%). The order of anaerobes for the three groups was Peptostreptococcus micros, Prevotella intermedia, and Peptostreptococcus anaerobius. Patients with T1DM-DNI and T2DM-DNI had higher white blood cell (WBC) counts and C-reactive protein (CRP) levels, more cases of surgery, more cases of tracheostomy, longer hospital stays, more mediastinal complications, and higher mortality rates than those without DM-DNI. Patients in the death subgroup in T1DM-DNI had higher WBC counts, band forms, and CRP levels than those in the survival subgroup. Patients with DM-DNI had more severe disease and higher mortality rate than those without DM-DNI. KP and Peptostreptococcus micros are the leading pathogens for both patients with T1DM-DNI and those with T2DM-DNI. Clinicians should beware of high serum levels of infection markers, which indicate potential mortality.

High Risk of Peritonsillar Abscess in End-Stage Renal Disease Patients: A Nationwide Real-World Cohort Study

Background: Peritonsillar abscess (PTA) is an infectious emergency in the head and neck, and patients with end-stage renal disease (ESRD) have an immunocompromised status. However, no relevant research has focused on the ESRD–PTA relationship. This study explored PTA in ESRD patients and their prognosis. Methods: We identified 157,026 patients diagnosed as having ESRD over January 1997 to December 2013 from Taiwan’s National Health Insurance Research Database (NHIRD). Each patient with ESRD (hereafter, patients) was matched with one control without chronic kidney disease (CKD; hereafter, controls) by sex, age, urbanization level, and income. Next, PTA incidence until death or the end of 2013 was compared between the two groups, and the relative risk of PTA was analyzed using a multiple logistic regression model. Results: The patients had a significantly higher PTA incidence than did the controls (incidence rate ratio: 2.02, 95% confidence interval [CI]: 1.40–2.91, p < 0.001). The Kaplan–Meier analysis revealed that the patients had a higher cumulative incidence of PTA than did the controls (p < 0.001). In Cox regression analysis, the patients had nearly twofold higher PTA risk (adjusted hazard ratio [HR]: 1.98, 95% CI: 1.37–2.86, p < 0.001). The between-group differences in the PTA-related hospital stay length (8.1 ± 10.3 days in patients and 5.7 ± 4.6 days in controls, p = 0.09), consequent deep-neck infection complication (4.2% in patients and 6.3% in controls, p = 0.682), and mortality (0.0% in both groups) were nonsignificant. Conclusions: Although ESRD does not predict a poor prognosis of PTA, it is an independent PTA risk factor.

The value of transcutaneous ultrasound in the diagnosis of tonsillar abscess: A retrospective analysis

OBJECTIVE

To identify the appropriate treatment in the tonsillar region's infections, a distinction between tonsillitis with or without abscess formation is essential. Ultrasound proved to be a valuable method in identifying abscess formation in the head and neck region. However, no report described the assessment of the tonsil region. This study aims to determine the feasibility of transcervical ultrasound for abscess visualization in the palatal tonsillar region.

METHODS

Retrospective analysis of 354 patients presenting with clinical suspicion of tonsillar abscess to a tertiary referral center and university hospital. All patients received a transcervical ultrasound to establish a primary diagnosis. The existence of an abscess was confirmed by puncture and incision, or final tonsillectomy. If no abscess could be delineated, non-abscessing tonsillitis was supposed, and conservative primary therapy and closed follow-up examinations were performed.

RESULTS

After the first diagnostic ultrasound examination, in 257 cases (72.59%), the diagnosis of an abscess could be established, but in 97 cases (27.40%), due to missing abscess formation criteria, non-abscessing tonsillitis was documented. Overall, ultrasonography demonstrated an overall accuracy of 78.8% in this selected cohort. The sensitivity, specificity, PPV, and NPV after the first ultrasound examination were calculated with 75.1%, 88.6%, 94.6%, and 57.3%, respectively.

CONCLUSION

The presented data confirm that an abscess formation due to tonsillitis can be detected by transcervical ultrasound, enabling prompt, adequate management. As transcervical ultrasound can be conducted fast and is not associated with radiation, it can be regarded as a first-line diagnostic tool in this condition.

Large Recurrent Mediastinal Abscess Presenting With Cardiopulmonary Collapse

Mediastinal abscesses are rarely encountered but pose a potential threat for cardiopulmonary collapse given the close proximity of vital structures. Our focus is to illustrate a case of a mediastinal abscess that was promptly diagnosed and treated, leading to complete resolution of the airway and circulatory compromise. The proposed pathogeneses behind mediastinal abscesses are discussed at length.

Evaluation of the QUANTUM BLUE sCAL rapid test as a point of care tool to identify patients with peritonsillar abscess

S100A8/A9 (Calprotectin) serves as a biomarker for various inflammatory diseases, such as for peritonsillar abscess (PTA). Recently, the PTA score was developed for reliable PTA identification. It uses a combination of characteristic clinical symptoms and elevated calprotectin levels in serum and saliva to determine this score. Although well-established point-of-care tests (POCT) to determine serum or faecal calprotectin levels exist, a reliable and rapid tool to analyse salivary calprotectin has not yet been described. In this study, we analysed the potential of the QUANTUM BLUE sCAL Test (QBT, BÜHLMANN Laboratories AG, Switzerland) to determine S100A8/A9 levels during outpatient management. These QBT measurements are combined with other clinical factors to determine the PTA score. Significantly higher calprotectin levels were determined by QBT in patients with PTA compared to healthy controls. The receiver operating characteristic (ROC) curves for the QBT revealed cut-off values of 2940 ng/ml (sensitivity = 0.88, specificity = 0.78) in serum and 5310 ng/ml (sensitivity = 0.80, specificity = 0.50) in saliva. By adding the QBT results to determine PTA values, a ROC analysis provided a statistical cut-off score of 2.5 points to identify the existence of a PTA with a sensitivity of 100% and a specificity of 89.3%. The QUANTUM BLUE sCAL Test (QBT) is an appropriate POCT to determine serum and salivary calprotectin levels. Thus, PTA scores can be determined within a short time frame by applying the QBT during outpatient management.

Management of ENT emergencies during the coronavirus disease 2019 pandemic

Background

Coronavirus disease 2019 imposed dramatic changes on ENT service delivery. Pre-pandemic, such changes would have been considered potentially unsafe. This study outlines the impact of lockdown on the incidence and management of ENT emergencies at a large UK centre.

Methods

After modification of pre-pandemic guidelines, ENT emergency referrals data during the UK lockdown were prospectively captured. A comparative analysis was performed with retrospective data from a corresponding period in 2019.

Results

An overall reduction (p < 0.001) in emergency referrals (n = 119) and admissions (n = 18) occurred during the lockdown period compared to the 2019 period (432 referrals and 290 admissions). Specifically, there were reduced admission rates for epistaxis (p < 0.0001) and tonsillar infection (p < 0.005) in the lockdown period. During lockdown, 90 per cent of patients requiring non-dissolvable nasal packing were managed as out-patients.

Conclusions

Coronavirus disease 2019 compelled modifications to pre-pandemic ENT guidelines. The enforced changes to emergency care appear to be safe and successfully adopted. Arguably, the measures have both economic and patient-related implications post-coronavirus disease 2019 and during future similar pandemics and lockdowns.

[Features of the clinic, diagnosis and treatment of parapharyngeal abscesses in children: analysis of 121 observations]

Parapharyngeal and retropharyngeal abscesses (PPA) in children are a rare pathology, for the diagnosis of which it is necessary to use additional instrumental examination methods. The tactics of treating patients remains a subject of discussion.

OBJECTIVE

To analyze the features of the clinic, diagnosis and treatment of PPA in children.

MATERIAL AND METHODS

According to the hospital database, a retrospective analysis of the medical histories of children discharged from the clinic with a diagnosis of "J39.0 Retropharyngeal and parapharyngeal abscess" was carried out in the period from 01.01.14 to 31.12.19. In all cases, the diagnosis was confirmed by computed tomography (CT) data with contrast enhancement. Complaints at the time of treatment, anamnesis and instrumental diagnosis data, clinical features of the course of the disease and the effectiveness of treatment were analyzed.

RESULTS

121 children were treated for PPA (average age 73±41 months; Me=52.5 months), which is 0.4% of all hospitalized in the otorhinolaryngological department, 0.7% of the number of emergency hospitalizations, 0.8% of the number of hospitalized children with pharyngeal diseases, and 8.3% of the number of patients with pharyngeal abscess. Abscesses were more often localized in the upper pharynx, at the level of the I-II cervical vertebrae (49.6% of all observations); abscesses were found least often in the pharyngeal space (5.8%), there was no statistically significant difference between the right-sided and left-sided location: 47.9% and 46.2%, respectively. Surgical treatment was performed in 98 (81%) patients in the presence of an abscess capsule or an abscess diameter of more than 2 cm according to CT; the remaining 23 (19%) children were treated conservatively. The opening of the abscess was performed endopharyngeal, in the case of a pronounced deep lateral location of the abscess and its proximity to large blood vessels - with access through the tonsillar niche after preliminary tonsillectomy (19.4% of those operated).

CONCLUSION

The final diagnosis of parapharyngeal and retropharyngeal abscess can be established by contrast-enhanced computed tomography. Conservative treatment is indicated for a limited group of patients at the initial stages of the disease, most patients need surgical treatment.

Complications of Dentoalveolar Surgery

This article explores how to prevent and manage complications of dentoalveolar surgery. Many complications are avoidable. Surgical skills and knowledge of anatomy play an important role in prevention of complications. Prevention starts with detailed history and physical examination of the patient. Key to perioperative management of patients is risk assessment. Without a proper history and physical examination, the clinician is unable to assess the risk of performing surgery and anesthesia for each patient. Some illnesses and medications increase the risk of complications. The following complications are discussed: alveolar osteitis, displacement, fracture, hemorrhage, infection, nonhealing wound, oroantral communication, swelling, and trismus.

Resource utilization of intraoperative cultures for pediatric deep neck space abscesses

INTRODUCTION

Peritonsillar (PT), parapharyngeal (PP), and retropharyngeal (RP) abscesses are common pediatric deep neck space infections (DNSI). Despite established literature on DNSI microbiology, obtaining intraoperative cultures remains commonplace. The objective was to evaluate the resource utilization of intraoperative cultures when draining PT, PP, and RP abscesses.

METHODS

Pediatric patients (age <18.0 years) who underwent surgical drainage of a PT, PP, or RP abscess between January 2013 and June 2018 were retrospectively reviewed. Changes in antimicrobials based on intraoperative culture results were assessed by use of Fisher's exact tests or Wilcoxon rank-sum tests, as appropriate. Multivariable linear regression was used to model the association between factors of interest and number of cultures obtained.

RESULTS

Eighty-eight patients underwent surgical drainage, of which 80 patients (median age 6.96 years) had intraoperative bacterial cultures (32 PT, 21 PP, and 27 RP). There were no positive fungal or acid-fast bacilli cultures. Seven patients had culture-directed changes in treatment; none of these patients had a PT abscess. Age was inversely associated with culture-directed changes (p = 0.006) while the use of blood cultures (p = 0.012) was positively associated with culture-directed treatment changes. Hospital length of stay (p < 0.001) and history of prior DNSI (p = 0.001) were associated with number of cultures obtained.

CONCLUSIONS

Younger children with PP and RP abscesses are most likely to benefit from intraoperative bacterial cultures. Cultures of PT abscesses are unlikely to change clinical management. Fungal and acid-fast bacilli cultures are unlikely to yield clinically useful information. Prudent use of intraoperative cultures may decrease the use of hospital resources and admission-related costs.

Management of pediatric peritonsillar and deep neck infections- cross- sectional retrospective analysis

Objective

Deep neck infections (DNI) are responsible for significant morbidity in children and healthcare expenditures. Few studies exist specifically addressing the clinical and epidemiologic characterization and management of DNI's in the pediatric population. Our goal was to analyse the demographic characteristics, clinical presentation, diagnostic and therapeutic approaches of peritonsillar and DNI in pediatric patients.

Methods

The medical records of patients, aged up to 18 years, admitted for peritonsillar and DNI at our department, from 2011 to 2016, were retrospectively reviewed and compared with the literature available. Ninety-eight patients were enrolled.

Results

The mean age was higher in patients with peritonsillar abscess and lower in patients with retropharyngeal and parapharyngeal infections. Admissions have significantly increased from 2011. There was a seasonal variation for DNI incidence, with a peak incidence in Summer and Spring. All patients included were treated as inpatient and received empirical intravenous antibiotic therapy and steroids regardless of drainage procedures. Incision and drainage was performed in 72 patients. The hospital length of stay was higher among patients with retropharyngeal abscess and in the group with complications. Only 2 patients developed complications during hospital stay. The most common microbiological pattern was monomicrobial and the most commonly isolated pathogens were Streptococcus Pyogenes, Streptococcus Mitis and anaerobic bacteria.

Conclusions

Surgical incision and drainage followed by intravenous antibiotic and steroids proved to be successfull with low morbidity related to surgical approach. However, in selected cases, medical therapy may be an alternative to surgical management in uncomplicated infections.

Management of Deep Neck Space Infections in a Tertiary Center in North West Nigeria

Background

Deep neck space infection (DNSI) is a potentially fatal condition that more commonly results from dental and tonsillar infections. Timely intervention is, therefore, crucial when such patients present to the managing physician.

Objective

The objective of this study is to review the etiology, clinical presentation, and treatment outcome of patients managed for DNSIs over a period of 7 years at National Ear Care Centre, Kaduna.

Methodology

The record of patients managed for DNSIs over a 7-year period between January 2010 and December 2016 was reviewed. Data obtained included demographic characteristics such as age, sex, occupation, level of education, main presenting symptoms, duration of symptoms, etiology of the DNSI, location of the infection, comorbidity, bacteriology, duration of hospital stay, and type of treatment given. The data were analyzed using the Statistical Package of the Social Sciences version 23.0.

Results

A total of 55 patients presented with DNSIs, and there were 34 (61.8%) females and 21 (38.2%) males, with a sex ratio of 1.6:1. The age range of the patients was 1-71 years, with a mean age of 30.7 years (standard deviation of 18.1). The most common etiologic factor among these patients was tonsillar-related infection which accounted for 24 (43.6%). The most common symptom at presentation was fever (96.4%), followed by odynophagia (60%). Peritonsillar space infection as seen in 25 (45.5%) patients was the most common region affected, followed by submandibular space infection. Of the 35 (64%) patients who had incision and drainage, Staphylococcus aureus was the most common organism isolated in 16 (45.7%), followed by Streptococcus pneumoniae (11, 31.4%). Majority (38, 69.1%) of the patients spent <5 days on admission.

Conclusion

This study shows that oropharyngeal and orodental infections are the most common causes of DNSIs. Educating the populace about orodental health may help in reducing cases of DNSIs in Nigeria.

Deep Neck Space Infections: A Case Series and Review of the Literature

Deep neck spaces are regions of loose connective tissue filling areas between the 3 layers of deep cervical fascia, namely, superficial, middle, and deep layers. The superficial layer is the investing layer, The pretracheal layer is the intermediate layer and the prevertebral layer is the deepest layer. Deep neck space infection (DNI) is defined as an infection in the potential spaces and actual fascial planes of the neck. Once the natural resistance of fascial planes is overcome, spread of infection occurs along communicating fascial boundaries. More recent trends include the increasing prevalence of resistant bacterial strains, a decline in DNIs caused by pharyngitis or tonsillitis, and a relative increase in DNIs of odontogenic origin. Most DNIs are polymicrobial. Only 5% are purely aerobic and 25% with isolated anaerobes. The epidemiology of DNIs needs to be monitored for changing trends and the impact of underlying host immunity and developing microbial multidrug resistance is established. Surveillance at laboratory level should include mandatory susceptibility testing of all empiric antibiotics against microbes commonly identified in adult DNI microscopy, culture, and sensitivity (MC&S) specimens. The role of susceptibility testing of microbes not commonly identified in adult DNI MC&S specimens needs further review, on a clinical case-by-case basis.

Bioactivities of Flavonoids from Lopezia racemosa

Lopezia racemosa Cav. (Onagraceae) has been used in Mexican traditional medicine to alleviate stomachache, biliary colic, urine retention, stomach cancer, and skin, dental, buccal, and urinary infections. The objective of this study was to determine the bioactivities of specific parts of the plant to scientifically confirm its traditional use. Aerial parts and flowers were macerated and subsequently extracted with hexane, chloroform, and methanol. This study was focused on the analysis of polar components, and thus the methanolic fractions were selected for further investigations. These fractions were evaluated for their antimicrobial activity using a panel of bacterial Gram-positive and -negative strains, as well as fungal strains, including filamentous fungi and yeasts. In addition, the cytotoxic activity of the extract was assessed by MTT using the human-derived monocytic THP-1 and the normal human fibroblast cell lines. Various fractions showed antimicrobial activity against various pathogens, although the most relevant were against Pseudomonas aeruginosa and Trichophyton mentagrophytes. No inhibition of yeasts was recorded. Only four fractions showed cytotoxic effects when the human-derived THP-1 and fibroblast cells were assessed. The four flavonoids isolated from the extract were luteolin, luteolin-6-C-hexoside, luteolin-8-C-hexoside, and hyperoside. The biological activities presented in this study validate some traditional uses of the plant.

Infections of the Oropharynx

This article reviews the presentation, diagnosis, and management of common and "can't miss" infections of the oropharynx, including streptococcal pharyngitis, infectious mononucleosis, peritonsillar abscess, retropharyngeal abscess, and epiglottitis.

A Guide to Utilization of the Microbiology Laboratory for Diagnosis of Infectious Diseases: 2018 Update by the Infectious Diseases Society of America and the American Society for Microbiology

The critical nature of the microbiology laboratory in infectious disease diagnosis calls for a close, positive working relationship between the physician/advanced practice provider and the microbiologists who provide enormous value to the healthcare team. This document, developed by experts in laboratory and adult and pediatric clinical medicine, provides information on which tests are valuable and in which contexts, and on tests that add little or no value for diagnostic decisions. This document presents a system-based approach rather than specimen-based approach, and includes bloodstream and cardiovascular system infections, central nervous system infections, ocular infections, soft tissue infections of the head and neck, upper and lower respiratory infections, infections of the gastrointestinal tract, intra-abdominal infections, bone and joint infections, urinary tract infections, genital infections, and other skin and soft tissue infections; or into etiologic agent groups, including arthropod-borne infections, viral syndromes, and blood and tissue parasite infections. Each section contains introductory concepts, a summary of key points, and detailed tables that list suspected agents; the most reliable tests to order; the samples (and volumes) to collect in order of preference; specimen transport devices, procedures, times, and temperatures; and detailed notes on specific issues regarding the test methods, such as when tests are likely to require a specialized laboratory or have prolonged turnaround times. In addition, the pediatric needs of specimen management are also emphasized. There is intentional redundancy among the tables and sections, as many agents and assay choices overlap. The document is intended to serve as a guidance for physicians in choosing tests that will aid them to quickly and accurately diagnose infectious diseases in their patients.

Deep head and neck infections: outcome following empirical therapy with early generation antibiotics

In order to study the bacteriological profile, antibiotic sensitivity and outcome following empirical therapy with early generation antibiotics in patients with deep head and neck infection, a retrospective review of 42 patients admitted for drainage and intravenous antibiotic therapy was performed. Ludwig's angina was the commonest infection, with the most common organisms isolated being Group F ß-haemolytic (15%) and non-haemolytic (12.5%) streptococcus. All streptococci and anaerobic gram-positive cocci were susceptible to penicillin. S. aureus isolates were oxacillin-sensitive and enterococcus isolates were ampicillin-sensitive. All 42 patients received empirical therapy with either intravenous penicillin or its derivatives. In only three patients was a change of antibiotic required based on culture and sensitivity results. Early generation antibiotics appear ideal as empirical therapy for deep head and neck infection.

Clinical Mimics: An Emergency Medicine-Focused Review of Streptococcal Pharyngitis Mimics

BACKGROUND

Pharyngitis is a common disease in the emergency department (ED). Despite a relatively low incidence of complications, there are many dangerous conditions that can mimic this disease and are essential for the emergency physician to consider.

OBJECTIVE

This article provides a review of the evaluation and management of group A β-hemolytic Streptococcal (GABHS) pharyngitis, as well as important medical conditions that can mimic this disease.

DISCUSSION

GABHS pharyngitis often presents with fever, sore throat, tonsillar exudates, and anterior cervical lymphadenopathy. History and physical examination are insufficient for the diagnosis. The Centor criteria or McIsaac score can help risk stratify patients for subsequent testing or treatment. Antibiotics may reduce symptom duration and suppurative complications, but the effect is small. Rheumatic fever is uncommon in developed countries, and shared decision making is recommended if antibiotics are used for this indication. Oral analgesics and topical anesthetics are important for symptom management. Physicians should consider alternate diagnoses that may mimic GABHS pharyngitis, which can include epiglottitis, infectious mononucleosis, Kawasaki disease, acute retroviral syndrome, Lemierre's syndrome, Ludwig's angina, peritonsillar abscess, retropharyngeal abscess, and viral pharyngitis. A focused history and physical examination can help differentiate these conditions.

CONCLUSIONS

GABHS may present similarly to other benign and potentially deadly diseases. Diagnosis and treatment of pharyngitis should be based on clinical evaluation. Consideration of pharyngitis mimics is important in the evaluation and management of ED patients.

Association between deep neck space abscesses and internal carotid artery narrowing in pediatric patients

Background/aim: Our aim was to interpret the effects of deep neck space abscesses on the adjacent carotid artery according to abscess location, as well as to determine narrowing by calculating the mean stenosis ratios.Materials and methods: Neck computed tomography scans and clinical data of 45 children with neck abscesses were evaluated retrospectively for abscess location and internal carotid artery narrowing. The lumen areas of the carotid arteries were measured from standard levels, and stenosis ratios were calculated with two different techniques. The mean stenosis ratios of each group according to abscess location were then compared with the control group.Results: Among the 45 abscesses included in the study, 51.1% (n = 23/45) were located in the peritonsillar region, 37.8% (n = 17/45) were located in the parapharyngeal-lateral retropharyngeal space, and 11.1% (n = 5/45) were in the midline retropharyngeal space. We found a statistically significant difference between the mean stenosis ratios of the ipsilateral side of the parapharyngeal-lateral retropharyngeal abscesses and the control group (P < 0.01).Conclusion: The children with parapharyngeal-lateral retropharyngeal abscesses all had narrowing in the adjacent carotid lumen to some degree. Although most of the patients had no clinical symptoms, radiologists have to be aware of this arterial complication to prevent further progress and fatal complications.

Microbial Diversity of Genital Ulcers of HSV-2 Seropositive Women

We measured the microbial community structure of genital ulcers in women. Swabs from clinically detected ulcers were tested for HSV-2 and Treponema pallidum by polymerase chain reaction (PCR). HSV-2 and T. pallidum were detected by serum antibody testing. Microbial community structure was characterized by high-throughput 16 s rRNA gene amplicon sequencing. Multiple group testing and Elastic net and Lasso regressions identified taxa associated with differences in factors of interest. Among 49 ulcer specimens from 49 HSV-2 seropositive women, by PCR HSV-2 was recovered from 28 (57%) specimens and T. pallidum from none; one woman showed serologic evidence of syphilis. Overall, 63% of women were HIV-positive and 49% had an uncircumcised male sex partner. By both multiple group testing and regression, Porphyromonas (FDR p-value = 0.02), Prevotella (FDR p-value = 0.03), Anaerococcus (FDR p-value = 0.07), and Dialister (FDR p-value = 0.09) were detected at higher relative abundance in HSV-2 PCR-positive than negative ulcers. The presence of HSV-2 in a lesion was associated with presumed bacterial agents of Bacterial vaginosis. Differences in bacterial communities may contribute to HSV-2 ulcer pathogenesis, severity, or prolonged healing. If these results are confirmed, future studies may consider the influence of BV treatment on women’s GUD and HSV-2 incidence and recurrence.

Comparison of Medical Therapy Alone to Medical Therapy with Surgical Treatment of Peritonsillar Abscess

Objective This study was performed to determine whether the efficacy and safety of medical management of uncomplicated peritonsillar abscess (PTA) presenting in the emergency department is equivalent to medical plus surgical therapy. Study Design Case series with chart review. Setting Southern California Permanente Medical Group (SCPMG). Subjects and Methods Upon successful completion of a prospective study comparing medical treatment (MT) to surgical treatment (ST) of PTA in 2008, MT was adopted by 12 SCPMG centers while 7 centers continued standard surgical drainage. Clinical outcomes are now reviewed on a random sampling of 211 patients with PTA treated with MT and 96 patients treated with ST between 2008 and 2013 at the respective medical centers. Patients were treated with intravenous (IV) fluids, weight-appropriate IV ceftriaxone, clindamycin, and dexamethasone, and then discharged on clindamycin × 10 days (MT). Patients in the ST group received MT but also surgical drainage. Primary end points were complication rates and failure rates. Results MT and ST resulted in no significant difference in treatment success or complications. However, patients in the MT group obtained significantly less liquid opioid prescriptions (MT, 30.8 ± 5.65; ST, 77.75 ± 13.41; P < .0001), reported fewer sore days (MT, 4.48 ± 0.27; ST, 5.77 ± 0.49; P = .0004), and required less days off from work (MT, 3.4 ± 0.44; ST, 4.9 ± 0.82; P = .044). Conclusions Compared to ST, MT appears to be equally safe and efficacious, with less pain, opioid use, and days off work, especially if patients with PTA present without trismus. MT for PTAs reduces the possibility of surgical complications, as well as the cost and inconvenience associated with ST.

How to avoid life-threatening complications following head and neck space infections: an algorithm-based approach to apply during times of emergency. When and why to hospitalise a neck infection patient

BACKGROUND

Head and neck space infections present with a potential mortality rate of 40-50 per cent. This paper proposes an algorithm-based management of head and neck space infection to prevent life-threatening events.

METHODS

A total of 225 patients with head and neck space infection were prospectively analysed at our institution. An experimental scoring system determined the level of clinical risk for the development of major complications. Accordingly, patients were classified into three risk groups: low-, intermediate- and high-risk.

RESULTS

Only intermediate- and high-risk patients were hospitalised. Intermediate-risk patients received intravenous medical therapy with daily re-evaluation; 18 of them required delayed surgery. Of the high-risk patients, three required immediate surgical treatment and five received delayed surgery, while in five cases medical therapy was the only treatment received. Low-risk patients were treated in an out-patient setting.

CONCLUSION

The algorithm-based management of head and neck space infection was successful in enabling the avoidance of lethal complications onset.

Increased Levels of S100A8/A9 in Patients with Peritonsillar Abscess: A New Promising Diagnostic Marker to Differentiate between Peritonsillar Abscess and Peritonsillitis

Peritonsillar abscess (PTA) is a very frequent reason for urgent outpatient consultation and otolaryngological hospital admission. Early, correct diagnosis and therapy of peritonsillar abscess are important to prevent possible life-threatening complications. Based on physical examinations, a reliable differentiation between peritonsillar cellulitis and peritonsillar abscess is restricted. A heterodimeric complex called calprotectin consists of the S100 proteins A8 and A9 (S100A8/A9) and is predominantly expressed not only in monocytes and neutrophils but also in epithelial cells. Due to its release by activated phagocytes at local sites of inflammation, we assumed S100A8/A9 to be a potential biomarker for peritonsillar abscess. We examined serum and saliva of patients with peritonsillitis, acute tonsillitis, peritonsillar abscess, and healthy controls and found significantly increased levels of S100A8/A9 in patients with PTA. Furthermore, we could identify halitosis, trismus, uvula edema, and unilateral swelling of the arched palate to be characteristic symptoms for PTA. Using a combination of these characteristic symptoms and S100A8/A9 levels, we developed a PTA score as an objective and appropriate tool to differentiate between peritonsillitis and peritonsillar abscess with a sensitivity of 92% and specificity of 93%.

The presence of minor salivary glands in the peritonsillar space

Peritonsillar abscess (PTA) is traditionally considered only a purulent complication of acute tonsillitis (AT), but may be related to infection of minor salivary glands. We analysed the presence of peritonsillar minor salivary glands and inflammation patterns in 114 adult tonsils representing three patient groups: recurrent AT, chronic tonsillitis (CT), and PTA. Samples acquired from elective tonsillectomies were stored in formalin, and after preparation were microscopically examined for inflammation and fibrotic changes. Clinical features and histological characteristics were compared between the groups. Of all tonsils, the minor salivary glands were present in 77 (67.5%). Glands located near the tonsillar tissue showed signs of infection in 73 (94.8%), while only 3 (15.0%) of 20 glands located deeper in the peritonsillar space were infected. Compared to patients with recurrent AT and CT, those with PTA more often presented with periductal inflammation, p < 0.011 (PTA 82.1%, AT 42.9%, and CT 63.6%). The majority of our 114 tonsillectomy specimens, collected from patients with AT, CT, or PTA, presented with infected minor salivary glands, and inflammation of the peritonsillar space glands was evident. To further elucidate the association between these glands and PTA, tonsillar samples should be collected and analysed from patients during the acute phase of infection.