1/53. mucocele of the anterior clinoid process: case report.OBJECTIVE AND IMPORTANCE: Of the primary intracranial mucoceles, those arising from the optic canal or anterior clinoid process are extremely rare. To our knowledge, only five cases have been reported. The pathogenesis of mucoceles at this unusual site is unclear, but the previously reported cases suggest that these mucoceles may originate from pneumatizing air cells in the anterior clinoid processes. CLINICAL PRESENTATION: A 43-year-old woman presented with diplopia. magnetic resonance imaging showed a small mass, compressing the optic nerve, in the medial portion of the left anterior clinoid process. The medial portion of the anterior clinoid process surrounding the mass was eroded and the bony margins of the mass were well corticated in computed tomographic scans. There was no direct connection between any paranasal sinus and the mass cavity, as assessed in imaging studies and intraoperatively confirmed. The pathological diagnosis after the operation indicated a mucocele. CONCLUSION: Considering the absence of air cells in the anterior clinoid processes, the mucocele in this case might have originated from ectopic mucinous tissue that appeared during the development of the optic canal, rather than from a pneumatizing air cell.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
2/53. mucocele-like formation leading to neurological symptoms in prolactin-secreting pituitary adenomas under dopamine agonist therapy.BACKGROUND: mucocele-like formation associated with pituitary adenomas, to the best of our knowledge, has been paid little attention. We report three adult male patients with a mucocele-like formation that developed behind the tumor and led to neurological symptoms in prolactin-secreting pituitary adenomas (prolactinomas) under dopamine agonist therapy. CLINICAL PRESENTATION: Three adult male patients with prolactinomas developed hyperprolactinemia and new neurological symptoms during dopamine agonist treatment. In each case, the pathogenesis of these symptoms was due in part to a mass enlargement with development of a mucocele-like formation behind a prolactinoma. In our patients, a prolactinoma with a suprasellar extension originally filled the sphenoid sinus. When dopamine agonist therapy became ineffective, new symptoms, such as progressive visual impairment other than typical hemianopsia or headache, developed and mass enlargement was found on MRI. MRI demonstrated two different components: an enhancing prolactinoma and a nonenhancing mucocele-like formation behind the tumor. Two patients had compression of the optic nerves by a mass. Transnasal removal of mucoceles and adenomas led to resolution of the neurological symptoms. CONCLUSION: Early suspicion of a mucocele-like formation under dopamine agonist therapy for prolactinomas is important in order to avoid a delay in surgery, because a change in medical treatment will be ineffective.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
3/53. Sphenoidal sinus mucocele after transsphenoidal surgery for acromegaly.This report concerns one case of a sphenoid sinus mucocele occurring 17 years after transsphenoidal surgery for acromegaly. In 1979, a 51-year-old man was successfully operated by the transnasal transsphenoidal approach for a growth hormone (GH) adenoma 1 cm in diameter. In 1996, the patient was hospitalized for headaches and diplopia. He presented a loss of right visual acuity with paralysis of the right oculomotor nerve. The basal GH level was normal with a satisfactory decrease after oral glucose ingestion. Pituitary sellar radiography showed a disappearance of the posterior clinoid while magnetic resonance imaging revealed the existence of a bilocular, circular, homogeneous lesion of the sphenoid sinus 3 cm in diameter with a posterior and lateral extension. The diagnosis of mucocele was confirmed by surgical treatment, allowing drainage of the mucocele through a transsphenoidal approach. The drained material was composed of sinus epithelium containing many polynuclear and resorptive cells. Postoperatively, the symptoms decreased dramatically, leading to full recovery of visual function and disappearance of the headaches. Apart from the tumor recurrence, the mucocele of the sphenoid sinus can be evoked as a possible long term complication of transsphenoidal surgery for pituitary adenoma.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
4/53. Maxillofacial hydatid cysts.We report 2 cases of hydatid cysts occurring in the submandibular gland and buccal submucosa, respectively. Our first case occurred in the submandibular salivary gland of a 20-year-old woman and the second involved the buccal submucosa of a 6-year-old boy. Both diagnoses were made after the excision of the lesions. Both patients were evaluated after surgery, and both were followed up, but no other organs were involved.- - - - - - - - - - ranking = 0.030245746691871keywords = organ (Clic here for more details about this article) |
5/53. Craniofacial fibrous dysplasia complicated by acute, reversible visual loss: report of two cases.We report two cases of craniofacial fibrous dysplasia which presented with acute visual loss. The first patient had a sphenoid sinus mucocele compressing the optic chiasm. In the second patient the optic canal was narrowed by dysplastic bone. In both cases optic nerve decompression restored vision to normal.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
6/53. Perineural spread in a case of sinonasal sarcoidosis: case report.We report a case of sinonasal sarcoidosis with perineural spread along the trigeminal and vidian nerves in which primarily MR imaging but also CT allowed excellent visualization of this infiltration.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
7/53. sphenoid sinus mucocoele and cranial nerve palsies in a patient with a history of nasopharyngeal carcinoma: may mimic local recurrence.We report the case history of a patient with a sphenoid sinus mucocoele detected by computed tomography and medical resonance imaging. The patient had a history of nasopharyngeal carcinoma, which was treated by radiotherapy more than 10 years previously. He presented with bilateral twelfth and sixth cranial nerve palsies. Local tumour recurrence was suspected. Further investigations showed that the cranial nerve palsies were caused by radiation damage and the sphenoid sinus mucocoele was an incidental finding. sphenoid sinus mucocoele is a possible rare late complication of radiotherapy in patients with nasopharyngeal carcinoma.- - - - - - - - - - ranking = 6keywords = nerve (Clic here for more details about this article) |
8/53. sphenoid sinus mucocele presenting with isolated oculomotor nerve palsy.Isolated sphenoid sinus mucoceles are rare. patients who have these lesions can present with several different symptoms and signs such as headache, nasal symptoms, and cranial nerves 2, 3, 4, and 6 palsies. Isolated oculomotor nerve palsy is not a common presenting symptom of sphenoid sinus mucocele. However, exclusion of sphenoid sinus mucocele should be made when the patient presents with isolated oculomotor nerve palsy. A case of sphenoid sinus mucocele with isolated oculomotor nerve palsy is presented with review of the literature. The oculomotor nerve function in this patient completely recovered after endoscopic sphenoidectomy.- - - - - - - - - - ranking = 9keywords = nerve (Clic here for more details about this article) |
9/53. sphenoid sinus mucocele: case report of an appearance on a panoramic radiograph.Mucoceles of the sphenoid bone are rarely seen, although many short reports have appeared in the medical literature since they were first described by Berg in 1889. The sphenoid sinus is located deep in the skull close to sensitive structures such as the optic chiasm and the upper 6 cranial nerves. Most sphenoid lesions are found through a variety of signs and symptoms, the appearance of which depends on the structure involved. A case of an incidental finding of a sphenoid sinus mucocele on a dental panoramic radiograph is described in a totally symptom-free 22-year-old woman. The screening of radiographs by a specialist in oral radiology plays a vital role in early diagnosis of a variety of diseases of the head and neck region.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
10/53. Powered endoscopic marsupialization for recurrent sphenoid sinus mucocele: a case report.We report a case of recurrent sphenoid mucocele successfully treated by using a powered instrument under endoscopic control. A 59-year-old male came to our clinic complaining of severe headache, right-side facial numbness (in the areas of the first and second branches of the trigeminal nerve), diplopia, and right blepharoptosis. Computed tomography (CT) imaging revealed opacification and expansion of the sphenoid sinus lesion. The lesion was diagnosed as right-side sphenoid mucocele affecting the functions of the trigeminal (first and second branches), oculomotor, and abducent nerves. Endoscopic drainage of the right-side sphenoid mucocele leads to gradual improvement of these symptoms. Approximately 1 year after the drainage procedure, the size of the enlarged sphenoid sinus ostium had decreased. The patient underwent endoscopic right-side total marsupialization of the sphenoid sinus using a powered instrument. Subsequently, the patient has presented no evidence of recurrent disease after 1 year of follow-up.- - - - - - - - - - ranking = 2keywords = nerve (Clic here for more details about this article) |
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