DISEASES OF THE MUCOUS MEMBRANES OF THE ORAL CAVITY : LIP CANCER (CANCER LABII) - etiology, pathogenesis, symptoms and course of, recognition, prediction and prevention
The etiology has not been elucidated. Some tend to attribute an etiologic importance of mechanical stimuli.
The pathogenesis. Often affects the lower lip (over 90%). The lesions predominantly occurs on the side of the lips.
Symptoms. In the initial stage is found a small knot on the red border of the lips near the transition of the mucous membrane in the skin. Hardening is represented as implication with eroded epithelial surface, separating the liquid adhesive a secret, which dries crusts. The characteristic symptom of lip cancer is the appearance of a dense base of the ulcer and its circumference. The next stage was the formation of a tumor with sharply defined boundaries, dense raised cartilaginous in consistency with the roller.
Course and complications. The first transition to the second stage sometimes lasts many months and even years. The cancer is in General quite slow: sometimes 2 - 3 years, in the second stage of the process is significantly accelerated. If early in the disease are equally developed two major symptoms, such as ulcers and swelling in subsequent stages of tumor development is particularly noticeable. Along with the increase of the tumor increases the area of ulceration, there are signs of lip fixation, fusion with the jawbone transitions on the shell lip. With the development of the tumor increased submental and submandibular lymph nodes: they become very dense, but while maintaining good mobility and painless. Cervical nodes increase later.
It should be borne in mind syphilitic ulcer of the lip. In doubtful cases shown wedge resection followed by microscopic examination.
Prediction for early recognition and timely produced radical surgery is quite favorable (75 - 90% recovery).
Treatment of cancer of the lip consists of excision of the tumor within healthy tissue with subsequent or simultaneous removal of regional glands submental and submandibular.