Microbiology of infected epidermal cysts

Brook, Itzhak

doi:10.1001/archderm.125.12.1658

Cited by 16 publications

(11 citation statements)

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“…S. Aureus was common in our patient group, a result found in some studies but not realized in others. 4,5,6 There were no anaerobes found to be more prevalent than others, but overall appearing nearly equal in prevalence to other studies. 4,5 The lab grew out anaerobic bacteria in 24% (n=18) of EIC's were found on the back, with 15% (n=11) found on the groin.…”

Section: Discussioncontrasting

confidence: 56%

A Retrospective Chart Review of Inflamed Epidermal Inclusion Cysts

Meister¹,

Taliercio²,

Shihab³

2021

JDD

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Background: Epidermal inclusion cysts (EIC) are one of the most common forms of cysts found on and/or underneath the skin. Inflamed EICs typically show signs and symptoms such as pain and erythema, mimicking cutaneous abscess. However, prior studies have demonstrated at least 20% of lesions are culture negative. Objective: To determine the rate of culture positivity in mild inflamed epidermal inclusion cysts, in particular to identify whether empiric antibiotics are warranted. Methods: In a retrospective chart review 76 cases of inflamed EIC that were mild (lacking systemic symptoms) were analyzed who presented to the department of dermatology at Mount Sinai between 2016-2019. Results: Of cultures taken from inflamed cysts, 47% resulted in no bacterial growth or growth of normal flora, 38.4% resulted in growth of aerobic bacteria with methicillin-resistant Staphylococcus aureus (8%), Staphylococcus lugdunensis (5%), and methicillinsensitive Staphylococcus aureus (13%) predominating, and 9.3% resulting in growth of anaerobic bacteria with Finegoldia magna, Peptostreptococcus, and Cutibacterium acnes presenting. Review of prescribed treatment regimens often involved antibiotic medication, despite a high prevalence of negative culture. Conclusions: Almost half of cases of mild inflamed EIC (lacking systemic symptoms) cultured will not grow pathogenic bacteria, therefore incision and drainage with culture and appropriate therapy is a viable therapeutic option in uncomplicated inflamed EIC lesions. In this way, over prescription of antibiotics can be minimized.

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Section: Discussioncontrasting

confidence: 56%

A Retrospective Chart Review of Inflamed Epidermal Inclusion Cysts

Meister¹,

Taliercio²,

Shihab³

2021

JDD

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“…We have recovered these organisms from three congenital cysts (two bronchial and one thyroglossal cyst) (44). We have also evaluated 24 infected neck cysts, as part of a study of 231 epidermal cysts (19). Aerobic bacteria were recovered in 13 (54%) cases, anaerobic bacteria only in eight (33%) cases and mixed aerobic and anaerobic bacteria in three (13%) cases.…”

Section: Infected Neck Cystsmentioning

confidence: 99%

Non‐odontogenic abscesses in the head and neck region

Brook¹

2008

Periodontology 2000

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“…12 Conversely, in 1989, Brook cultured 231 ''epidermal cyst abscesses,'' of which only 192 had bacterial growth. 13 Of these, 108 grew anaerobic organisms, mainly as Peptostreptococcus and Bacteroides, whereas 135 grew aerobic organisms, mainly S. aureus. 13 In 1998, Diven and colleagues sought to clarify the results from Leppard and colleagues and Brooks by concurrently culturing 25 inflamed and 25 uninflamed EICs.…”

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confidence: 99%