Introduction:
Malignancies of maxillo-ethmoidal massive occur rarely, they are responsible for approximately 3% of head and neck tumors, the most common histopathological type is planoepithelial cell carcinoma.

Aim:
We present a case report of a 47-year-old man affected by planoepithelial cell carcinoma of maxilloethmoidal massive.

Case study:
A 47-year-old man was admitted to our department due to the surgical treatment of left maxillo-ethmoidal massive carcinoma T4N0M0. Anamnesticly, problems with nasal patency, recurrent nosebleeding from left nasal cavity for about a year. Planoepithelial cell carcinoma was diagnosed. The patient underwent radio- and chemotherapy. After the tumor's stabilization, he was qualified for surgical treatment. The right maxilla, maxillary process of zygomatic bone and orbital process of palatine bone were resected. Tissue loss, especially palate, was restored with left temporalis muscle flap.

Results and discussion:
Postoperative MRI scan confirmed radicality of surgery. General condition of patient is good, however we observed loss of the left eyeball's function. The patient uses dentures – chewing and swallowing are not impaired. The patient returned to the social and occupational activities. While planning the treatment of maxilla-ethmoidal massive tumor, we should map out reconstruction method of defects arising after the tumor's removal. It is extremely important to ensure satisfactory quality of life.

Conclusions:
Reconstruction of palate with temporalis muscle flap following surgical resection of maxilloethmoidal massive tumors is an effective method of surgical treatment, leading to satisfactory functional and cosmetic outcomes.