نتایج جستجو برای: head neoplasms
تعداد نتایج: 639262 فیلتر نتایج به سال:
There is a tendency among the head and neck surgeons to classify head and neck tumors as squamous and nonsquamous. The latter is a miscellaneous collection of less common, but certainly no less significant neoplasms. The rarity of these tumors is evident from the limited data available on clinical characteristics and outcomes. This study is thus an attempt to meet the need and fill the void by ...
Sir Angiosarcomas (AS) are rare malignant neoplasms of mesenchymal origin that exhibit vascular di¡erentiation. They mainly a¡ect adult men. They account for approximately 1% of all sarcomas and 35% primarily a¡ect the skin, usually on the head and neck (1). Ten percent of angiosarcomas develop in chronic lymphoedema (2). Some are associated with lymphoedema due to conditions such as trauma, co...
Plasma cell tumors are a diverse group of neoplasms characterized by monoclonal proliferation of plasma cells. Extramedullary plasmacytoma (EMP) is a rare form of localized plasma cell tumor that arises most often in the head and neck region. We present an unusual case of EMP of the palatine tonsil from a tertiary care university hospital. We discuss the histopathologic and radiologic evaluatio...
Plasma cell neoplasms of the head and neck region can be extramedullary plasmacytoma of the bone, solitary plasmacytoma of the bone, and local manifestations of multiple myeloma. A 70-year-old male patient was admitted to our hospital with diplopia of four-day history. Magnetic resonance imaging showed soft tissue in the sphenoid sinus. Endoscopic biopsy was taken from the sphenoid sinus, which...
Background and objectives: Salivary gland tumours account for 2-6.5% of all the neoplasms of the head and neck. Fine needle aspiration cytology (FNAC) is being increasingly used in the diagnosis of salivary gland tumours. The objective of this study was to evaluate the diagnostic accuracy and the sensitivity and specificity of FNAC in various salivary gland tumours in correlation with their his...
INTRODUCTION Schwannomas are benign neoplasms of the peripheral nerves originating in the Schwann cells which occur in the head and neck region only in 25% of cases. Primary non epithelial tumours of the thyroid gland are rare. Schwannoma of the thyroid is extremely rare. Only 19 cases have been described in English literature [1-6]. A case of schwannoma of thyroid gland which simulated a thyro...
Sarcomas account for less than 1% of malignant neoplasms arising in the head and neck in adults. Laryngeal synovial sarcoma is an extremely rare form of laryngeal malignancy with less than 20 cases reported in the literature. We report the case of a 48-year-old man with synovial sarcoma of the larynx. He underwent excision of the tumor followed by radiation. He is alive in remission at 36 month...
Schwannomas are benign neoplasms originating from the neural sheath and occurring most often in the soft tissues of the head and neck. Intraosseous schwannomas, however, are rare. The most common site of occurrence for these unusual lesions is the mandible. This article documents a case of an intramandibular schwannoma and provides a review of the literature on intraosseous schwannomas, with sp...
Inflammatory pseudotumor is a rare non-neoplastic mass that may clinically and radiologically mimic a spectrum of benign and malignant neoplasms. It is uncommon in the head and neck and particularly rare at the skull base. We present a case of pseudotumor originating from the trigeminal nerve in a patient who presented with headache and facial numbness. A high index of suspicion is necessary to...
PURPOSE OF REVIEW Diffusion-weighted MRI (DWI) is a noninvasive imaging technique allowing some degree of tissue characterization by showing and quantifying molecular diffusion. Cell size, density and integrity influence the signal intensity seen on diffusion-weighted images. A number of recent reports suggest that this technique may have interesting applications in the evaluation of head and n...
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