In a cat missing the top two teeth with radiographs showing bone lysis in the area of the dentition, what diagnostic test is indicated to evaluate the abscess?

In a cat missing the top two teeth with radiographs showing bone lysis in the area of the dentition, what diagnostic test is indicated to evaluate the abscess?

• A. Cytology of abscess
• B. Bacterial culture
• C. Complete blood count
• D. Dental radiographs

Answer: (A)

Obtaining a sample from the lesion and examining it under a microscope is the most direct way to confirm an odontogenic abscess. Cytology of the abscess content will typically show degenerating neutrophils with intracellular and extracellular bacteria, which is diagnostic of purulent infection. This quick, minimally invasive test provides immediate confirmation and helps guide treatment decisions, such as antibiotic choice and whether to flush or debride the area. Dental radiographs already indicate bone loss around the dentition, which supports the presence of an infection, but they don’t reveal the cellular makeup of the lesion. A complete blood count might show systemic inflammation if the infection is spreading, but it won’t confirm an abscess. Bacterial culture can be useful later to tailor antibiotics, but it isn’t as rapid or diagnostic for an abscess as cytology.

Obtaining a sample from the lesion and examining it under a microscope is the most direct way to confirm an odontogenic abscess. Cytology of the abscess content will typically show degenerating neutrophils with intracellular and extracellular bacteria, which is diagnostic of purulent infection. This quick, minimally invasive test provides immediate confirmation and helps guide treatment decisions, such as antibiotic choice and whether to flush or debride the area.

Dental radiographs already indicate bone loss around the dentition, which supports the presence of an infection, but they don’t reveal the cellular makeup of the lesion. A complete blood count might show systemic inflammation if the infection is spreading, but it won’t confirm an abscess. Bacterial culture can be useful later to tailor antibiotics, but it isn’t as rapid or diagnostic for an abscess as cytology.