@Wendy&Neko @Bron and Sheba (GA)
Hi Wendy and Bron. So sorry to come to update about Fa’s biopsy result a bit late. After the vet told us on the phone the biopsy shows it’s not cancerous, I forgot to ask for a copy of the report. Waited one more week to follow up and then I did not have my spreadsheet up to date , so I did not come back until today I finished all the updating .
We are not too sure what might be the causes of the lumps. Fa is an indoor cat. Only chance is that she might be in garage and got into some insects. Vet asked if any access to plants and I said I don’t have plants at home except some cat grass I gave her every now and then . Vet does not think it’s the cat grass .
Anyway, I will put the report details below.
REPORT:
HISTORY. 2 lumps removed from the face.
GROSS DESCRIPTION.
9 x 6 x 3 mm skin ellipse with 5 x 4 mm lesion.
10 x 8 x 4 mm skin ellipse with 5 x 4 mm lesion.
HISTOPATHOLOGY. Multiple section planes of the specimens were examined and these reveal evidence of epidermal hyperplasia and some mild compacted hyperkeratosis with multifocal areas of chronic inflammation disrupting the superficial dermis. These may be accompanied by ulceration and some superficial necrosis with a chronic inflammatory response extending into the superficial dermis. The lesion is dominated by activated macrophages accompanied by neutrophils and a few eosinophils with plasma cells at the periphery and a few scattered lymphocytes can be seen. No evidence of neoplasia was noted and no deep infection was encountered. Some sections reveal quite extensive central necrosis but no significant deep infection. No unequivocal neoplasia was noted although some of the macrophages are quite pleomorphic. Excision is complete.
DIAGNOSIS. Multifocal necrotising to granulomatous dermatitis.
COMMENT. Histological assessment of these 2 foci reveals fairly similar lesions characterised by ulceration, necrosis and granulomatous inflammation. The exact cause of these is not apparent within the sections and the possibility of some prior injury (arthropod-related?) with furunculosis and chronic inflammation will warrant consideration. The lesions appear benign and the prognosis with removal should be good. Should these lesions persist or recur consider harvesting tissues for culture.