Chapter 12 – Bacterial Skin and Soft-Tissue Infections

Lu C , Merrill C , Medellin A , Novak K , Wilson SR. Bowel ultrasound state of the art: grayscale and Doppler ultrasound, contrast enhancement, and elastography in Crohn disease . J Ultrasound Med 2019 ; 38 : 271 – 88 .

A small abscess can be drained under a local anaesthetic but most need a general anaesthetic. The operation usually takes 10 to 20 minutes.

An abscess inside the body usually occurs in people who are ill with other medical conditions, or in people with a weakened immune system. For example, a lung abscess may form following a bout of pneumonia; a brain abscess may form after a penetrating head wound (an injury in which the outer covering of the brain is pierced) which can be life-threatening.


Sonographic Analysis of Abscess Maturation in a Porcine Model

Abscess: Causes, Symptoms, Treatments & Complications

O’Rourke K , Kibbee N , Stubbs A. Ultrasound for the evaluation of skin and soft tissue infections . Mo Med 2015 ; 112 : 202 – 5 .

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What is an abscess?

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An abscess looks like a little bump or a pimple that can grow into an inflamed, fluid-filled cyst. The skin surrounding an abscess is often painful and warm to the touch. In some cases, an abscess can be extremely hard and firm (indurated).

What Is an Abscess

a, b, c: Abdominal CT scan showed a localized abscess formation above ...

Size and volume changes over time are quantified from the 3D surface reconstructions of the outer extent of the capsule and of the inner core (Figure 5). Table 1 shows the dimensions (Length x Width x Height) and the volume for both the entire abscess and for the abscess core over time. The length of the abscess decreased over time (102 mm at week 2 to 68 mm at week 4) as the volume increased (20.4 ml at week 2 to 37.2 ml at week 4).

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Serial case study

Moran , G. J. , Krishnadasan , A. , Gorwitz , R. J. , et al. Methicillin-resistant S. aureus infections among patients in the emergency department . N. Engl. J. Med. 2006 ; 355 ( 7 ): 666–74 .CrossRefGoogle ScholarPubMed

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What does an abscess core look like

What Does A Abscess Look Like

Used dressings and gauze should be thrown away to avoid spreading the infection further. Frequent changing of dressings is recommended for the same reason.

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General complications of any operation

Gum disease occurs when the gum (gingiva) – the mucosal tissue surrounding and protecting the teeth – becomes infected and inflamed. Gum disease is usually caused by plaque, a sticky coating of bacteria that accumulates on the teeth along the gum line and causes irritation.

Talan , D. A. , Krishnadasan , A. , Gorwitz , R. J. , et al. Comparison of Staphylococcus aureus from skin and soft-tissue infections in US emergency department patients, 2004 and 2008 . Clin. Infect. Dis. 2011 ; 53 ( 2 ): 144–9 .CrossRefGoogle ScholarPubMed

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Abscess informational video

Infected abscesses are walled-off collections of inflammatory cells, cellular debris, and bacteria. They often develop as complications in the setting of surgery, trauma, systemic infections, and other disease states. Abscess care depends on size, location, composition and complexity, among other patient factors. For deeper abscesses, current treatment is typically limited to antibiotics with long-term catheter drainage, or surgical washout when inaccessible to percutaneous drainage or unresponsive to initial care efforts. Ultrasound imaging can assist in reliable identification of abscesses so that appropriate treatment is applied (O’Rourke et al. 2015). For example, ultrasound can be used to distinguish abscesses from other soft-tissue pathologies such as cysts, hematomas, phlegmons and cellulitis. It can also be useful in planning therapy strategies by establishing extent, maturity, and structural features such as loculations (internal chambers).

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An untreated abscess inside the body is usually very serious. You are likely to become very ill and treatment is usually needed.

Different types of hair follicle infections

What does an abscess core look like

Skin infections are generally very common, but most of them are caused by something else. Only about 3 out of 100 people who go to their doctor with a skin infection have a boil.

They are more likely to lead to boils or other skin infections in people who have weakened immune systems. For this reason, boils are more common in people with medical conditions such as diabetes, chronic infections or cancer. They are also more common in people with eczema, conjunctivitis or certain allergies such as allergic asthma.

This article explains the symptoms, causes, and treatment options for abscesses. It also points out how to prevent them from developing in the first place.

Chapter 12 – Bacterial Skin and Soft-Tissue Infections


Duan X , Qu M , Wang J , Trevathan J , Vrtiska T , Williams JC Jr . , Krambeck A , Lieske J , McCollough C. Differentiation of calcium oxalate monohydrate and calcium oxalate dihydrate stones using quantitative morphological information from micro-computerized and clinical computerized tomography . J Urol 2013 ; 189 : 2350 – 6 .

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Most people make a full recovery and can return to normal activities.

An abscess happens when your body tries to control infection by forming a wall around an infected area. Pus forms within this wall. As the amount of pus increases, the lump grows and causes pain. You can get an abscess anywhere in your body.

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