Sphenoid Sinus

Radiographic findings of a well-differentiated sinonasal neuroendocrine neoplasm: Case report and review of the literature

July 20, 2015     Cui Ping Mao, PhD; Ming Zhang, MD; Chen Niu, PhD; Min Li, MD; Yuan Wang, MD
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Abstract

Typical carcinoid is a rare tumor among other neuroendocrine neoplasms that occur in the nasal cavity. Only a few cases of typical carcinoids in the nasal cavity have been reported. We report a case of typical carcinoid of the nasal cavity in a 61-year-old man who had a history of persistent nasal obstruction and epistaxis for approximately 17 years. Computed tomography revealed a huge, lobulated mass in the nasal cavity with extension into the posterior sphenoid sinus. Extensive bone destruction could be seen in the neighboring sphenoid sinus. MR imaging suggested that the tumor was close to the dura. The final histologic evaluation of the excised biopsy specimen yielded a diagnosis of a well-differentiated neuroendocrine neoplasm (typical carcinoid). In this article, the relevant reports in the literature are reviewed, and the role of radiographic findings on tumor diagnosis and on the establishment of a surgery plan is emphasized.

Palliative endoscopic surgery for sinonasal metastases: A case report and literature review

February 2, 2015     Jason M. Roberts, MD; Christopher Brook, MD; Steven Parnes, MD
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Abstract

Cancer metastatic to the paranasal sinuses often presents with ophthalmologic and facial deformities, as well as sinonasal complaints. These diminutive tumors are difficult to effectively treat, often leading to poor quality of life. Although breast cancer is a common cancer affecting more than 150,000 women each year,1 rarely is metastatic breast cancer found within the sinuses. We report our palliative treatment approach and outcomes of a 40-year-old patient with breast cancer metastatic to the paranasal sinuses. While providing a better understanding of this tumor's metastasis through a review of the literature, our report describes the role of palliative surgery for metastases to the paranasal sinuses.

Cutaneous malignant melanoma metastatic to the sphenoid sinus

December 19, 2014     Silviu Albu, MD; Opincariu Iulian, MD; Sorin Necula, MD
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While metastases to the paranasal sinuses are unusual, metastases to the sphenoid sinus are exceedingly rare, especially metastases of a cutaneous melanoma to the mucosa. We report the case of a 38-year-old man who presented with a solitary sphenoid sinus metastasis that had spread from a cutaneous malignant melanoma. The metastasis was removed via a wide, endoscopically assisted sphenoidotomy. The patient was further treated with external radiotherapy, and at 8 months of follow-up he was free of disease. However, he experienced a recurrence at 3 years that proved to be fatal. We review the pathogenesis and histopathology of sinus metastases, and we discuss the imaging features that characterize melanoma metastatic to the upper respiratory tract. While complete cure of patients with a sphenoid sinus metastasis has not been reported, significant palliation with radiation therapy is possible in many patients. Therefore, patients with sphenoid sinus symptoms suggestive of a sphenoid sinus malignancy should be vigorously evaluated for the possibility of a primary malignancy as well as a metastasis to the sinus.

A rare occurrence of a fungus ball in the sphenoethmoid recess

October 17, 2014     Jae-Hoon Lee, MD; Ha-Min Jeong, MD
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A fungus ball usually appears as a calcification within the sinus, suggesting the presence of a foreign body.

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.

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.

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.

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.

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