1887

Skin masses, nodules and swellings

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Abstract

Skin masses, nodules and swellings are a common presentation as they are visible to owners and often worry them. Solid, cystic or oedematous elevations of the skin may be epidermal or dermal, or may extend into the subcutaneous fat and panniculus. All masses and nodules are composed of accumulations of cells, which can be neoplastic, inflammatory, or a mixture of the two. This chapter considers history, clinical examination, differential diagnoses, diagnostic approach, empirical treatment whilst awaiting results, when to refer and what to do if finances are limited. : Fine-needle aspiration.

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Figures

Image of 5.33.2
5.33.2 DSH cat presented with a swelling on the dorsal aspect of its nose. Fine-needle aspirate smear from the swelling (Diff-Quik; original magnification X1000). Fungal elements can be seen (examples are arrowed) plus large numbers of inflammatory cells, confirming the lesion to be a fungal granuloma. It is not possible to identify the species on cytology alone but the causative fungus was identified by culture as . Treatment with systemic itraconazole for 3 months led to a complete resolution of the lesion.
Image of Plasma cell pododermatitis of the central metacarpal pad of a forelimb. The pad surface is slightly white/mauve and scaly.
Plasma cell pododermatitis of the central metacarpal pad of a forelimb. The pad surface is slightly white/mauve and scaly. Plasma cell pododermatitis of the central metacarpal pad of a forelimb. The pad surface is slightly white/mauve and scaly.
Image of 5.33.5
5.33.5 Interpretation of fine-needle aspirate cytology.
Image of A mass above the metacarpal pad of a young cat’s foot.
A mass above the metacarpal pad of a young cat’s foot. A mass above the metacarpal pad of a young cat’s foot.
Image of Clipping has revealed puncture wounds on the mass.
Clipping has revealed puncture wounds on the mass. Clipping has revealed puncture wounds on the mass.
Image of Untitled
Image of Untitled
Image of The needle is redirected within the lesion with slight suction from the syringe.
The needle is redirected within the lesion with slight suction from the syringe. The needle is redirected within the lesion with slight suction from the syringe.
Image of Untitled
Image of The needle is detached from the filled hub.
The needle is detached from the filled hub. The needle is detached from the filled hub.
Image of Untitled
Image of Untitled
Image of Untitled

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