Bisphosphonate-related osteonecrosis of the jaws is an increasingly common side-effect of bisphosphonate treatment of malignant cancer of the osseous tissue. Necrotic foci of the bone with secondary inflammation are typical of the condition. The treatment is symptomatic and depends on the severity of the disease. The case is presented of BRONJ in a 66-year-old, occupationally-active female patient who had undergone implant-prosthetic treatment, and whose quality of life deteriorated significantly due to the symptoms of the disease. Bisphosphonate-related osteonecrosis of the jaw is treated conservatively at the initial stages of the disease, and surgical treatment should be avoided. Thorough oral hygiene and irrigations with chlorhexidine solution, supported by guided antibiotic therapy, are recommended. In severe cases, surgical sequestrotomy of the inflammatory foci, aimed at inhibiting or decelerating the course of the disease, is necessary.

The aim of the study was evaluation of cytochrome concentration in the peripheral blood lymphocytes of patients with laryngeal cancer. The study was conducted in a group of 62 patients presenting different clinical advancement of the disease. The study material consisted of the studied population's peripheral blood from which T lymphocytes were isolated and incubated with monoclonal antibodies. To evaluate antigens’ expression, a FACS Galibur flow cytometre was used; the evaluated cells were labeled with fluorochrome-conjugated monoclonal antibodies. Next, mononuclear cells were rinsed with cold PBS and suspended in the lysis buffer. In the obtained cell lysate the c cytochrome concentration was determined with the use of an immunoenzymatic test, HumanCytochrome cELISA Kit (BenderMed Systems, Austria). Obtained results were compared with the measurements taken in 20 healthy individuals who constituted the control group. On the basis of conducted study it was found that the level of c cytochrome concentration was significantly increased in the T CD3+ lymphocytes in the peripheral blood of patients with stage IV of laryngeal cancer. A positive correlatio was also found between the cytochrome level in lymphocytes and the advancing stage of the disease. Our own observation give grounds to conjecture that together with the progress of laryngeal cancer the energetic potential of lymphocytes increases and so does the readiness of the lymphatic cells to undergo the redox processes, therefore the amount of c cytochrome in the cells increases.

We noticed 10.6% local complications in our group of patients whereas only 2.5% of treated persons developed general sequel. The pharyngo-cutaneous fistula was the most often occurring local complication. It has been treated surgically in 15 (45.5%) patients. Whereas cardiovascular and pulmonary diseases were the most often general complications and they occur in above half of all cases with general complications.

There is a relation between the presence of laryngeal cancer and the expression of B7 family molecules.

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