This report describes a very rare case of a pseudopsammomatous meningioma (meningioma pattern secretans) in a nine-year-old female dog. The neoplasm, located in the left olfactory groove, was characterized by the PAS-positive granules, so called pseudopsammoma bodies. In many areas of the tumor cells become hyalinized and encrusted with calcium salts. Mammary gland adenocarcinoma with metastases in the lung and in the pituitary glandule was diagnosed and also skin squamous cell carcinoma (cancroid) and pituitary adenoma were recognized in this dog.
Physical and functional abnormalities of the lids or adnexal ocular structures may result in abnormalities of the cornea and subsequently vision. Cancer begins when normal cells start to change and grow uncontrollably, forming a mass called a tumor. Eyelid tumors can be either benign or malignant. The most common malignant eyelid tumors include basal cell carcinoma, sebaceous gland carcinoma, squamous cell carcinoma and malignant melanoma. Cytologic examination of the fine needle aspiration and biopsy samples may reveal a specific type of neoplasm. All cancers from the eyelid and eye globe need to be removed. Histologic examinations of incised masses are recommended.