Sphenoid Sinus

Non-otogenic lateral sinus thrombosis: A complication of acute sphenoid sinusitis

August 27, 2014     Jessica M. Somerville, MD; Erik Lyman, MD; Jerome W. Thompson, MD, MBA; Rosemary Stocks, MD, PharmD
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Abstract

The consequences of intracranial spread of sinus infection can be dismal. The subtle presentation of sphenoid sinusitis often leads to a delay in diagnosis. The disease may go unrecognized until complications are severe enough to cause more localizing symptoms. Often infections in the head and neck spread into the cranial cavity, leading to a localized effect. For example, otogenic infections can spread to the mastoid or lateral venous sinus. We report a case of sphenoid sinusitis complicated by lateral and sigmoid venous sinus thrombosis.

Metastatic hepatocellular carcinoma presenting as a sphenoid sinus mass and meningeal carcinomatosis

June 8, 2014     Hilwati Hashim, MBBCh, MRad; Kartini Rahmat, MBBS, MRad; Yang Faridah Abdul Aziz, MBBS, MRad; Patricia Ann Chandran, MD, MPath
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Abstract

We report the case of a 30-year-old woman who was referred to us for evaluation of a 2-week history of fever, headache, vomiting, bilateral ptosis, and blurred vision. Imaging obtained by the referring institution had identified a sphenoid sinus mass and diffuse meningeal infiltration, which was thought to represent an infective process. We subsequently identified the mass as a metastatic hepatocellular carcinoma (HCC). The patient was placed under palliative care, and she died 1 month later. Metastases to the sphenoid sinus from any primary source are very rare, and they are generally not considered in the radiologic differential diagnosis. HCC is known to metastasize to the lung, lymph nodes, and musculoskeletal system; again, reported cases of metastasis to the sphenoid sinus are rare. Indeed, our review of the English-language literature found only 6 previously reported cases of sinonasal metastasis of a primary HCC. A diagnosis of a sinonasal metastasis is more difficult in a patient who has no previous diagnosis of a primary malignancy. In presenting this case, our aim is to remind readers of this possibility.

Unusual presentations of choanal polyps: Report of 3 cases

February 12, 2014     Ali Ozdek, MD; Halil Erdem Ozel, MD
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Abstract

Most choanal polyps arise from the maxillary sinus, and they are called antrochoanal polyps. Their typical endoscopic and radiologic appearance makes them easy to diagnose. However, some choanal polyps originate in unusual sites in the paranasal sinuses and nose, such as the sphenoid sinus and the lateral wall of the nose. These polyps usually present unilaterally, although bilateral presentations are possible. We describe 3 cases of atypical choanal polyps: a sphenochoanal polyp, bilateral antrochoanal polyps, and a giant antrochoanal polyp. In each case, nasal endoscopy and computed tomography clinched the diagnosis, and endoscopic surgery was performed to successfully remove the polyp. We discuss the clinical characteristics of these 3 cases.

The significance of magnetic resonance imaging and computed tomography findings in sphenoid sinus agenesis

February 12, 2014     Lokman Uzun, MD; Omer Faik Sagun, MD; Bulent Seferoglu, MD; Omer Etlik, MD; and Kamran Mahmutyazicioglu, MD
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Abstract

Agenesis of the sphenoid sinuses is a very rarely encountered anatomic variation. Findings on magnetic resonance imaging can mislead the radiologist and clinician. Therefore, the gold standard for diagnosis is computed tomography (CT) of the paranasal sinuses. We present the case of a 28-year-old man who was admitted to our hospital with a 3-month history of headache. CT of the paranasal sinuses revealed isolated bilateral sphenoid sinus agenesis.

Endoscopic view of sphenoid sinus illumination and transillumination

February 12, 2014     Ken Yanagisawa, MD, FACS; Dewey A. Christmas, MD; Joseph P. Mirante, MD, FACS; and Eiji Yanagisawa, MD, FACS
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The sphenoid sinus has been considered a more challenging sinus to view with the lighted guide wire; unlike the other three paranasal sinuses, the sphenoid sinus is “hidden” from view because of its more posterior location.

Sphenoid sinus mucocele as a cause of isolated pupil-sparing oculomotor nerve palsy mimicking diabetic ophthalmoplegia

December 20, 2013     Alireza Mohebbi, MD; Hesam Jahandideh, MD; Ali Amini Harandi, MD
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Abstract

A 37-year-old woman presented with isolated right-sided oculomotor nerve palsy. Neurologic examination revealed no other disorder. Computed tomography of the paranasal sinuses demonstrated complete opacification of the sphenoid sinus. Dense mucoid fluid was drained from the sphenoid sinus via an endoscopic transseptal sphenoidotomy. A biopsy confirmed the diagnosis of sphenoid sinus mucocele. At follow-up 4 weeks postoperatively, the patient's ocular symptoms were markedly alleviated. Considering rare causes of isolated oculomotor nerve palsy, such as sphenoid sinus mucocele, is important in the differential diagnosis, even in patients with well-known risk factors such as diabetes mellitus.

The endoscopic transnasal paraseptal approach to a sphenoid sinus osteoma: Case report and literature review

December 20, 2013     Frank Rikki Canevari, MD; Georgios Giourgos, MD; Andrea Pistochini, MD
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Abstract

Osteomas are the most common benign tumors of the nose and paranasal sinuses. Their symptoms, which are nonspecific, occur as the result of a blocked nasal airflow or, in some rare cases, the involvement of nearby structures. Isolated sphenoid sinus osteomas are very rare, as only 20 cases have been previously reported in the literature. Most authors advise surgical treatment for symptomatic lesions. Surgical access to the sphenoid sinus has traditionally been a challenge for surgeons. We describe an endoscopic transnasal paraseptal resection of a sphenoid osteoma in a 35-year-old man. We also discuss surgical access and review the evolution of the surgical approaches to the sphenoid sinus.

Endoscopic view of the sphenoid sinus seen through the posterior ethmoid sinus

October 23, 2013     Joseph P. Mirante, MD, FACS; Dewey A. Christmas, MD; Eiji Yanagisawa, MD, FACS
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Care must be taken when entering the sphenoid sinus, to dissect inferiorly and medially to avoid injury to the vital structures of the lateral wall of the sphenoid sinus.

Progressive blindness caused by an unusual sphenoid sinus dehiscence

September 18, 2013     Mariana Marquez, MD; Enrique Palacios, MD, FACR; Jeremy Nguyen, MD; Harold R. Neitzschman, MD, FACR, FACNM, FAAP
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The optic nerve and other important structures in the anterior skull base can be involved in chronic sphenoidal sinus disease.

Endoscopic view of the posterior septal branch of the sphenopalatine artery

April 17, 2013     Jae Hoon Lee, MD
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Moderate posterior epistaxis can be avoided if the posterior septal branch of the sphenopalatine artery is accounted for when extending the natural ostium inferiorly to a distance greater than approximately 5 mm.

Renal cell carcinoma metastatic to the sinonasal region: Three case reports with a review of the literature

October 31, 2012     Pradipta Kumar Parida, MS, DNB, MNAMS
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Abstract

The paranasal sinuses are a rare location for metastases. The most frequent infraclavicular primary tumor to metastasize to the nose and paranasal sinuses is renal cell carcinoma. Three cases of bilateral renal cell carcinoma with metastases to the paranasal sinuses and with destruction of the skull base are reported. These patients had a primary renal cell carcinoma on the left side for which they had undergone a left nephrectomy many years previously. Right-sided renal cell carcinoma was diagnosed only after the patients had developed symptoms secondary to their metastases. These patients presented with the unusual manifestations of frontal swelling, proptosis, and epistaxis. They were offered palliative treatment in the form of radiotherapy and interferon therapy.

Sphenoethmoid sinusitis in a child resulting in a disastrous intracranial sequela

October 31, 2012     Aye Jane Sow, MS(ORL-HNS); Jeevanan Jahendran, MS(ORL-HNS); Charng Jeng Toh, MS(Neurosurg); Thean Yean Kew, FRCR
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Abstract

Localized sphenoethmoid sinusitis in children is a rare occurrence. It is usually overlooked because of the misconception that the sinuses are not developed. We describe a case of localized acute sphenoid and right posterior ethmoid sinusitis that presented as right frontobasal subdural empyema and multiple deep cerebral abscesses. Morbidity from subdural empyema in children is high. Early diagnosis and treatment based on recognition that the etiology might involve the paranasal sinuses affects the overall prognosis.

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