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  • 1
    ISSN: 1613-9674
    Keywords: Paranasal sinus ; Maxillary sinus ; Malignant tumor ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Carcinoma of the paranasal sinuses is a very serious disease, but its incidence is lower than that of any other oral malignancy. Failure to diagnose it early because of misleading symptoms resembling sinusitis usually leads to its detection at a stage when it has already destroyed the bony walls of the sinus and has spread to surrounding structures (infratemporal fossa, posterior ethmoid cells, orbit, cribriform plate, nasopharynx, sphenoid sinus or base of the skull). It is uncommon for this cancer to spread to the regional lymph nodes as long as it remains confined within the maxillary sinus. CT scanning provides an accurate assessment of the extent of resection required and is usually used as an indicator of operability. A 56-year-old man with a chief complaint of palatal swelling, pain and pus discharge was referred to Seoul National University Dental Hospital. Orthopantomogram and Waters' view revealed an aggressive bone destruction in the right maxillary molar area, ipsilateral sinus opacification and destruction of the lateral wall of the maxillary sinus. The CT fidding showed that the right maxillary sinus was occupied by a soft tissue mass which represented a central low density, with an irregular shape at some levels. The tumor mass also involved the pterygopalatine fossa, right esthmoid sinus, nasal cavity and hard palate. Incisional biopsy was done and the biopsy report was squamous cell carcinoma. He was transferred to Internal Medicine for chemotheraphy because of inoperability.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1613-9674
    Keywords: Malignant tumor ; Thermography ; Maxillo-facial region
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Thermographic images of 48 cases of malignant tumors were analyzed and compared with those of other lesions: 93 cases of acute inflammation, 48 cases of chronic inflammation, 48 cases of benign tumors and 28 cases of cystic lesions. The majority of the cases with malignant tumors showed higher skin temperature over the affected area, but usually not so remarkable such as those of the cases with acute inflammation. The border of the thermal pattern of the tumors showed the tendency to be unclear. Both malignant tumors and acute inflammation appeared to cause an increase in skin temperature of the common carotid artery region on the affected side as compared with the opposite side. Malignant tumors showed the tendency that the temperature of the common carotid artery region of the affected side is equal or lower than the affected region in many cases. It is suggested that with further sophistication of the system suitable for the maxillofacial region, thermography may serve a role in the clinical diagnosis of malignant tumors.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1613-9674
    Keywords: Maxillary sinusitis ; Malignant tumor ; Maxilla ; Bone destruction ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We used CT to examine the bone destruction sites of the entire bone wall of the maxillary sinus in cases of malignant tumors of the maxilla and in maxillary sinusitis cases to investigate the differences between the destructive findings of the bone of both patient groups. The study subjects consisted of 13 patients with malignant tumors of the maxilla and 45 patients with maxillary sinusitis. Destruction of the bone wall was seen in 100% of the patients with malignant tumor of maxilla patients and in 57.8% with the maxillary sinusitis, hence showing a significantly higher incidence in malignant tumors of the maxilla. Neither group of patients exhibited disease-specific characteristics of their bone destruction. The incidence of posterolateral bone destruction in patients with malignant tumor of the maxilla patients was 61.5%, while it was significanty lower at 23.1% in the maxillary sinusitis patients. The number of bone walls affected was 2 or more walls in 84.5% of the malignant tumor patients of the maxilla patients and in 42.3% of the maxillary sinusitis patients.
    Type of Medium: Electronic Resource
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