{'fraction_non_alphanumeric': 0.027982326951399118, 'fraction_numerical': 0.012763868433971527, 'mean_word_length': 4.9941176470588236, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Malignant orbital and orbitomaxillary tumors: surgical considerations.

Malignant tumors of the orbit and the orbitomaxillary region constitute 4-8% of head and neck malignancies. The lesions can be primary orbital malignant tumors or can invade the orbit from the eyelids, the eyeball or the paranasal sinuses, especially the maxillary sinus and ethmoids. The commonest primary malignant tumors of the orbit are lymphomas, rhabdomyosarcomas and lacrimal gland epithelial tumors. These tumors are excluded from the present study since their management differs from that of metastatic tumors. Our experience is based on a series of 48 patients operated during the last five years. There was an equal distribution according to both age and sex, with two-thirds of the patients being over 60 years of age. Histologically, the basal cell carcinomas (B.C.C.) prevailed with 19 cases, followed by squamous cell carcinomas (Sq.C.C.) in 12, adenocarcinomas (AdenoCa) in 10 and orbital melanomas (O.M.) in 7. In 13 cases the maxilla was also affected. Surgical treatment varied from exenteration to wide cran iofacial resections; immediate reconstruction followed in all cases. Only 10 patients were treated with surgery alone. In the remaining 38 patients radiotherapy was given, alone or in combination with chemotherapy. The surgical techniques included exente ration with split-thickness skin grafting in 19 cases, exenteration with coverage with median forehead flap in 16, and maxillectomy with forehead and temporalis flaps in 7 cases. The tumors recurred in 12 patients, all of them in the first postoperative year. Ten patients died from intracranial involvement or distant metastases. In six of these patients the lesions were Sq.C.C., in two AdenoCa and in two O.M. It is concluded that the surgical treatment of orbital and orbitomaxillary malignancies, although subject to broad guidelines that determine the operability of the tumors, should be individualized according to the extent of the lesion and the experience of the surgeon.