General pathology - inflamation

[Sally]

Acute cholecystitis - Microscopic

The neutrophils are seen infiltrating the mucosa and submucosa of the gallbladder in this patient with acute cholecystitis and right upper quadrant abdominal pain with tenderness on palpation

.

[Sally]

Acute bronchopneumonia , microscopic

At medium power magnification, numerous neutrophils fill the alveoli in this case of acute bronchopneumonia in a patient with a high fever. Pseudomonas aeruginosa was cultured from sputum. Note the dilated capillaries in the alveolar walls from vasodilation with the acute inflammatory process.

[Sally]

ِAbscess formation lung , gross
Extensive acute inflammation may lead to abscess formation, as seen here with rounded abscesses (the purulent material has drained out after sectioning to leave a cavity) in upper lobe and lower lobe.

The white arrows mark areas of abscess formation in the upper lobe of this lung. The liquefactive necrosis of an abscess is apparent, because the purulent contents are draining out to leave a cavity. On a chest radiograph, the liquefied central contents of an abscess can appear as an "air-fluid level".

[Sally]

Microabscess formation heart gross

Much smaller abscesses are seen here. These could be termed "microabscesses" due to their small size. Abscesses can come in a variety of sizes. Perhaps the most common abscess is the pimple on the face of a teenager.

[Sally]

Abscess formation myocardium , microscobic

An abscess is a localized collection of PMN's. Here is a microabscess in the myocardium. The irregular dark purple center is a collection of bacteria that are the cause for this abscess.

[Sally]

Abscessing bronchopneumonia , Gross

This abscessing bronchopneumonia has numerous areas of raised, lighter tan appearance which are the areas containing the extensive neutrophilic infiltrates

.

[Sally]

Abscessing bronchopneumonia , Microscobic

Microscopically, the extensive neutrophilic exudate of an acute abscessing pneumonia is seen here. Normal tissues are destroyed in the region of the abscess.

Here is another more focal abscess in the lung. The alveoli in that area have been destroyed.