No abstract available.

We report a rare case of pleomorphic adenoma arising from heterotopic salivary gland tissue in the upper neck. Although it is difficult to differentiate this condition from lymph node diseases-including metastasis- on the basis of radiologic findings alone, it should be included in the differential diagnosis of a solitary unilateral solid cervical mass, particularly one in the upper neck.
Adenoma, Pleomorphic* ; Diagnosis, Differential ; Lymph Nodes ; Neck* ; Salivary Glands*

No abstract available.
Sinusitis*

We present a case of hyaline vascular type Castleman disease involving the bilateral cervical lymph nodes. To our knowledge, no previous case of this localized form of the disease has been reported. Dynamic CT demonstrated a hypervascular pattern of enhancement, with central less enhanced areas that corresponded histologically to fibrosis. For the diagnosis of this uncommon lymph node disease, these findings might be helpful.
Diagnosis ; Fibrosis ; Giant Lymph Node Hyperplasia* ; Hyalin ; Lymph Nodes ; Neck*

PURPOSE: The purpose of this study was to evaluate computed tomographic (CT) findings of deep neck space infection(DNSI) with particular attention to the differences in the spaces involved and in complications between odontogenic and nonodontogenic groups. MATERIALS AND METHODS: Forty-four patients(21 odontogenic and 23 nonodontogenic) were included in this study. Among odontogenic DNSls, 15 had the dental infection in the second or third mandibular molar. We compared the CT features between odontogenic and nonodontogenic DNSIs with special emphasis on the differences in the spaces involved and in the rate and type of complications. RESULTS: In all patients, CT clearly differentiated abscess from cellulitis. The most common spaces involved in 21 patients with odontogenic DNSl were the parapharyngeal(n=18), the submandibular(n=18), the anterior visceral(n=13), the masticator(n=9), and the sublingual(n=7) spaces. In contrast, in 23 patients with nonodontogenic DNSI, the anterior visceral space(n=14) was most frequently involved. The parapharyngeal, the submandibular, and the masticator spaces were statistically more frequently involved in odontogenic than in nonodontogenic DNSI(p<.05). Twenty-two patients had one or more complications shown by CT, of which airway compromise was more frequent and severe in odontogenicthan in nonodontogenic DNSI. CONCLUSION: We conclude that the parapharyngeal, the submandibular, and the masticator spaces are more significantly vulnerable in odontogenic DNSl than in nonodontogenic DNSl. The predilection for certain spaces of the neck in odontogenic DNSl seems to originate from the intimate relationship of the mandibular molars to the adjacent deep neck spaces.
Abscess ; Cellulitis ; Humans ; Molar ; Neck*

PURPOSE: The purpose of this study was to evaluate computed tomographic (CT) findings of deep neck space infection(DNSI) with particular attention to the differences in the spaces involved and in complications between odontogenic and nonodontogenic groups. MATERIALS AND METHODS: Forty-four patients(21 odontogenic and 23 nonodontogenic) were included in this study. Among odontogenic DNSls, 15 had the dental infection in the second or third mandibular molar. We compared the CT features between odontogenic and nonodontogenic DNSIs with special emphasis on the differences in the spaces involved and in the rate and type of complications. RESULTS: In all patients, CT clearly differentiated abscess from cellulitis. The most common spaces involved in 21 patients with odontogenic DNSl were the parapharyngeal(n=18), the submandibular(n=18), the anterior visceral(n=13), the masticator(n=9), and the sublingual(n=7) spaces. In contrast, in 23 patients with nonodontogenic DNSI, the anterior visceral space(n=14) was most frequently involved. The parapharyngeal, the submandibular, and the masticator spaces were statistically more frequently involved in odontogenic than in nonodontogenic DNSI(p<.05). Twenty-two patients had one or more complications shown by CT, of which airway compromise was more frequent and severe in odontogenicthan in nonodontogenic DNSI. CONCLUSION: We conclude that the parapharyngeal, the submandibular, and the masticator spaces are more significantly vulnerable in odontogenic DNSl than in nonodontogenic DNSl. The predilection for certain spaces of the neck in odontogenic DNSl seems to originate from the intimate relationship of the mandibular molars to the adjacent deep neck spaces.
Abscess ; Cellulitis ; Humans ; Molar ; Neck*

No abstract available.
Neck*

Cholesteatoma of the middle ear and mastoid sometimes destroys the posterior wall of the external auditory canal(EAC), and this phenomenon is termed as "automastoidectomy". During the past two years the authors reviewed the CT features of automastoidectomy in eight patients with middle ear cholesteatoma. There was a variable amount of the cholesteatomatous mass or debris within the mastoid cavity in all patients, of whom air collection was found in four. Interestingly, the site and pattern of the erosion of the EAC were nearly, identical between patients with air in the mastoid cavity and those without it . Air in the mastiod cavity was the only clue of the expulsion of the cholesteatoma. So, we think that the expulsion of the cholesteatoma might be predicted when the erosion of the EAC is present in patients with cholesteatoma in the mastoid cavity. CT clearly depicted associated complications caused by the cholesteatoma, such as ossicular destruction (n=8), the eroion of the facial nerve canal (n=2), the erosion of the lateral semicircular canal (n=2), the erosion of the tegmen (n=1), the erosion of the sigmoid sinus plate(n=1), the erosion of the superior esmicircular canal (n=1), and the erosion of the vestibule (n=1). Although much of the natural history of the middle ear cholesteatoma still remains to be determined, we think that careful evaluation of one type of possible progression of the disease will help us understand its clinical course. Moreover, our findings strongly support the use of CT for evaluation of "automustetomy" seen in many cases of cholesteatoma.es of cholesteatoma.
Cholesteatoma ; Cholesteatoma, Middle Ear ; Colon, Sigmoid ; Ear, Middle ; Facial Nerve ; Humans ; Mastoid ; Natural History ; Semicircular Canals

No abstract available.
Birth Weight* ; Leukocytes* ; Parturition* ; Zinc*

No abstract available.
Leiomyoma*