Nasal planum: squamous cell carcinoma

SCC nasal planum

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Introduction

  • Squamous cell carcinoma of the nasal planum is an uncommon tumor in dogs. Unlike cats it is not associated with a lack of pigmentation and exposure to UV irradiation.

Diagnosis

Clinical signs

  • Physical examination initially reveals superficial crusting lesion, progressing to more thickened, ulcerated and indurated mass with time. Evaluate regional lymph nodes for possible metastasis. Uncommonly can be proliferative.
  • Enlarged regional lymph nodes do not necessarily indicate metastasis, since reactive nodes are common. Enlarged lymph nodes should be evaluated by aspiration cytology .

Differential diagnosis

  • Differential diagnoses might include immune-mediated disease, infectious disease, eosinophilic granuloma, or other neoplastic disease (lymphoma , fibrosarcoma , etc).

Outcomes

Prognosis

  • Completely excised lesions have a good prognosis whereas incompletely excised tumors recur but this may be delayed.

Expected response to treatment

  • Only lack of recurrence a periodic rechecks will determine completeness of response.
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