A b s t r a c tProstate cancer usually metastasis to the regional lymph nodes and can rarely metastases to nonregional supradiaphragmatic lymph nodes. Cervical lymph node metastasis of prostate cancer is extremely rare. However, it should be considered in the differential diagnosis of cervical lymphadenopathy in male patients with adenocarcinoma of unknown primary site. In this report we present a rare case of metastatic prostate adenocarcinoma with left supraclavicular lymphadenopathy as the only clinical presentation with no other evidence of metastasis to the regional lymph nodes or bone metastasis.

A b s t r a c tThe authors present a case of 41-year-old patient with unicentric type of Castleman's disease in the neck imitating carotid glomus tumor. This rare condition can affect any lymph-node in the body and neck localization occurs only in 14% of cases. The case when Castleman's disease simulating chemodectoma have not been described yet in the literature. The authors give details on the course of the disease, its diagnosis and treatment and the discussion focuses on the reasons why the auxiliary imaging methods have led to the clinical diagnosis of carotid glomus tumor, and why the treatment was chosen.

The function of parathyroid gland is affected by a wide spectrum of diseases, among them primary hyperparathyroidism is the most common. In about 85% of the patients a solitary parathyroid adenoma is the cause of the hyperparathyroidism. Surgical removal of pathologically changed gland is a treatment of choice, usually performed by miniinvasive radio-guided parathyroidectomy. In this article the authors review current knowledge, research state, and present some cases of this operation at the Clinic of Otorhinolaryngology and Head and Neck Surgery, Jessenius Faculty of Medicine, Comenius University and University Hospital Martin, Martin, Slovakia.

In head and neck cancers the occurrence of nodal metastases is the most important prognostic factor. Their early diagnosis is crucial for proper treatment. Detection of early metastases is still very difficult. Predictive diagnostic methods such as the sentinel lymph node detection is limited by the occurrence of skip metastases. At our Clinic we prefer a selective neck dissection based on a surgical treatment of predilected lymphatic spread area for each type of head and neck tumor with a preservation of non-lymphatic structures of the neck. The main objective of this article is to analyze the distribution of neck metastases and to study the frequency of skip metastases in head and neck cancer.

A b s t r a c tDeep neck infection is an infection in the potential space and fascial planes of the neck, either with abscess formation or cellulitis. Cervical fascias create space and plane, which define and limit the spread of infection. Danger space is the area of thin connective tissue extending from the skull base down to the diaphragm. This space is enclosed on all sides, therefore inflammation in this area arises from penetration and spreads of infection from surrounding structures. This risk is in the rapid spread of infection in the chest, due to the low resistance of thin connective tissue. Formation of the descending necrotizing mediastinitis is the most common and most feared complication of danger space.Authors describe a case of extensive dental infection that despite intensive surgical and antibiotic treatement spread to other anatomical areas and caused descending necrotizing mediastinitis.