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PubMed1981

[Mucoceles of the minor salivary glands. Extravasation mucoceles (mucus granulomas) and retention mucoceles (mucus retention cysts) (author's transl)].

360 cases of salivary glands cysts (= 6%) were collected in the Salivary Glands Register (Institute of Pathology, University of Hamburg) from 1965 until 1979 among a total of 5739 register cases. 273 cases of the cystic lesions (= 76%) were mucoceles of the minor salivary glands. The analysis of these 273 cases revealed the following results: 1. Two types of mucoceles can be morphologically distinguished: extravasation mucoceles and retention mucoceles. 2. The extravasation mucocele is in our material (240 cases = 88.7%) the most frequent type of mucocele. The term "extravasation mucocele" of the anglo-american literature is identical with the term "mucus granuloma" ("Schleimgranulom") introduced by Hamperl (1932). 3. The main signs of the mucus granulomas are: predominant location (79%) at the lower lip, age peak in the 2nd decade and more frequent occurrence (in 60%) in the male sex. 4. Three stages of development can be distinguished in the pathogenesis of the mucus granulomas: an initial stage (interstitial mucus lakes), a resorption stage (mucus granulomas with macrophages, foam cells and foreign bodies giant cells) and a terminal stage with the development of a pseudocyst (capsule of collagen tissue, no epithelial demarcation). 5. The retention mucocele (synonym: mucus retention cyst) is a rare type of mucocele (33 cases = 11.3%). The main signs are: nearly equal occurrence in all oral regions, age peak in the 8th decade, moderate predominance of the female sex. 6. The retention mucoceles contain viscous mucous material, possess always an epithelial demarcation of the cysts differentiated analogous to the different segments of the salivary duct system and show as a rule no inflammatory reaction compared with the extravasation mucoceles. 7. Microtraumas and mucus congestions play the important role in the development of the extravasation mucocele. The final formation depends on the amount of the overflowed mucus and the intensity of the mucus phagocytosis. 8. Partial obstructions of the ducts are considered as the important factor in the development of the retention mucocele. Besides, relations are discussed to high differentiated monomorphic adenomas. 9. In differential diagnosis, the retention mucoceles must be distinguished from other salivary glands cysts (lymphoepithelial cysts etc.), the extravasation mucoceles from other granulomatous reactions of the salivary glands.

Adolescent↗
PubMed2004

Efficacy of endoscopic sinus surgery for paranasal sinus mucocele including modified endoscopic Lothrop procedure for frontal sinus mucocele.

This study evaluated the efficacy of the modified endoscopic Lothrop procedure (MELP) for complicated frontal mucoceles and endoscopic marsupialization for other paranasal sinus mucoceles. It was a retrospective, consecutive case review of sinus mucoceles treated endoscopically by a single surgeon over a four-year period (1998-2002). There were 41 mucoceles in 28 patients, including 24 frontal, eight frontoethmoidal, three ethmoidal, five maxillary and one frontal mucocele. Twenty-one patients underwent the modified Lothrop procedure for frontal mucoceles, and seven underwent simple drainage and marsupialization for frontoethmoidal, ethmoidal and maxillary mucoceles. At median follow-up of 16 months, all patients had a patent mucocele opening. Patients treated by drainage and marsupialization did not have any complications or mucocele recurrence. All patients treated by the modified endoscopic Lothrop procedure had improvement in symptoms and signs. Four patients had minor complications including epistaxis and adhesions and five required further surgery. The average hospital in-patient stay was 2 +/- 1.4 days. Endoscopic techniques, including MELP are effective in the short term for the management of complex and simple paranasal sinus mucoceles. MELP has a useful place in the management of mucoceles with a significant bony partition from an adjacent sinus or nasal cavity. It is also indicated when the mucocele is associated with loss of lateral support in the sinus with risk of medial-wall collapse of the orbital contents obstructing drainage.

Adolescent↗
PubMed2006

Frontal mucocele with an accompanying orbital abscess mimicking a fronto-orbital mucocele: case report.

BACKGROUND: Mucoceles are slowly expanding cystic lesions with respiratory epithelium containing mucus most commonly affecting the frontal and ethmoidal sinuses. They are caused by obstruction of sinus ostium. Mucoceles exert pressure on the bony boundaries and due to the proximity to the brain and orbit extension to these areas are common. CASE PRESENTATION: A case of a frontal mucocele with an accompanying orbital abscess mimicking a fronto-orbital mucocele is reported. A 77 year old female patient suffering from left sided proptosis and pain around the left eye was admitted to our department. She had a history of left frontal sinus mucocele one year ago that was offered an osteoplastic frontal sinus surgery that the patient refused. Patient had limitation of eye movements. Fundoscopic examination revealed a minimal papilledema. Coronal computerized tomography and orbital magnetic resonance imaging showed a frontal mucocele with suspicious erosion of the orbital roof and a superiorly localized extraconal mass displacing the orbit lateroinferiorly. Frontal and orbital masses had similar intensities. Thus surgery was planned for a fronto-orbital mucocele. During surgery no defect was found on the orbital roof. Frontal mucocele and orbital cystic mass was removed separately. Pathological examination showed a frontal mucocele and an orbital abscess wall. Postoperatively eye movements returned to normal and papilledema resolved. CONCLUSION: Fronto-orbital mucoceles are commonly encountered pathologies, but frontal mucocele with an orbital abscess is a rarely seen and should be kept in mind because their treatments differ.

Journal Article↗
PubMed2004

Relationship between mucoceles, nasal polyposis and nasalisation.

The etiology of sinus mucoceles remains somewhat obscure, but favorizing factors can be broadly divided in two: inflammation and trauma. Patients suffering from nasal polyposis offer a unique group for the study of mucoceles as they present the factor of inflammation related to their polyposis, and the factor of trauma when being treated surgically. In order to establish the relationship between nasal polyposis, mucoceles and nasalisation, we performed a retrospective study on the files of 501 patients operated according to the nasalisation technique. We then selected all the patients who also presented with a mucocele that could be diagnosed before, during or after the surgery. We also noted the presence of associated pathologies like bronchial asthma or the Fernand Widal's syndrome (Samter's triad), in order to see if they played a role in mucocele.formation. Our study group finally included 36 patients that presented one or several mucoceles in association with nasal polyposis. Only three of them did not have any antecedent of surgery or known trauma, giving an incidence of mucoceles associated to a non-surgically treated polyposis of 0.6%. The mean incidence rate of mucocele formation after nasalisation for nasal polyposis was estimated to be of 2.5/100 patients per year. The real incidence may be greater as some patients may have been lost in follow up. Sixteen patients presented multiple mucoceles. The most frequent location was the fronto-ethmoidal region. The formation of mucoceles, or their multiplicity, did not appear to be influenced by the presence of an associated pathology, as up to one half of the patients presented an isolated nasal polyposis. Nevertheless, when associated pathologies were present, mucoceles were more frequently observed in the Widal's triad. Most of the mucoceles were diagnosed during the first 6 years after nasalisation, with a peak incidence around year 2 and 3. We conclude that nasalisation, like other endonasal endoscopic techniques, can be related to a greater incidence of mucoceles than non-surgically treated nasal polyposis. Associated pathologies do not seem to influence mucoceleformation. It is important for the surgeon to follow-up patients operated of a nasal polyposis as mucoceles can develop very lately.

Adolescent↗
PubMed2001

Endoscopic management of 108 sinus mucoceles.

OBJECTIVES/BACKGROUND: Traditional teaching has emphasized the need for complete removal of sinus mucoceles to achieve a cure. However, with the introduction of endoscopic sinus surgical instruments and techniques, there has been a trend toward transnasal endoscopic management of sinus mucoceles. The aim of this study is to establish the efficacy of endoscopic management of sinus mucoceles. STUDY DESIGN: Retrospective review. PATIENTS AND METHODS: Between 1988 and 2000, 103 patients with 108 paranasal sinus mucoceles were treated endoscopically. This series includes 66 frontal and frontoethmoid, 17 ethmoid, 7 sphenoethmoid, 12 sphenoid, and 6 maxillary mucoceles. Ninety patients (83.3%) had intraorbital extension and 85 of them presented with some degree of proptosis or eye displacement. Sixty patients (55.5%) had erosion of the skull base with varying degrees of intracranial extension of the mucocele. Follow- up ranged from 1 to 131/2 years with a median of 4.6 years. INTERVENTION: All patients underwent endoscopic-wide marsupialization of the mucocele cavity. Stents were used in frontal mucoceles only. RESULTS: Recurrence of a frontal mucocele was seen in 1 patient (0.9%). In 5 patients, out of 23 patients who presented with massive pansinus polyposis in addition to the mucocele, recurrent polyposis required revision surgery. However, the mucoceles did not recur in those patients. CONCLUSIONS: There is increasing evidence in the literature that endoscopic management of sinus mucoceles results in long-term control with recurrence rates at or close to 0%. Rhinologic surgeons should consider the endoscopic technique as the surgical treatment of choice.

Adolescent↗
PubMed1995

The endoscopic management of sphenoid and ethmoid mucoceles with orbital and intranasal extension.

Mucoceles of the sphenoidal and ethmoidal sinuses act as benign neoplasms and can result in bony erosion extending from within the confines of the sinuses into the intracranial and orbital spaces. Endoscopic management of such mucoceles has been debated, and, by some, considered a radical form of therapy. A review of consecutive patients with sinus mucoceles revealed eight sphenoid and six ethmoid mucoceles. Four of these were confined to the sinuses and 11 extended outside of the confines of the sinuses. There were four with intracranial extension, two with orbital extension, three with both intracranial and orbital extension, and two involving the clivus. All 15 patients were managed with endoscopic decompression. Two patients with ethmoid-frontal mucoceles also had frontal sinus obliteration, via an osteoplastic flap along with sphenoethmoidal decompression with an endoscopic approach. Thirteen patients had more than one year of follow-up. Two patients with ethmoid mucoceles with intracranial extension had recurrences of the mucoceles which again have been decompressed endoscopically. There were no orbital or intracranial complications in relationship to these procedures or from the mucoceles. Symptoms related to the mucoceles including loss of vision and severe headaches were resolved with decompression. The endoscopic management of sphenoid and ethmoid mucoceles with orbital and intracranial extension is a safe and reliable approach, obviates the need for major intracranial surgery and diminishes post-operative morbidity. Close follow-up is necessary and secondary decompression can be accomplished should the mucocele recur.

Endoscopy↗
PubMedDate not supplied

Clinical manifestations and management of orbital mucoceles: the role of ophthalmologists.

PURPOSE: To report the clinical features of orbital mucoceles and discuss the role of ophthalmologists in the management of patients with orbital mucoceles. METHODS: A retrospective chart review was performed of all patients with orbital mucoceles treated at the National Taiwan University Hospital from 1990 through 2002. The basic profiles, clinical features, and the management of the patients with orbital mucoceles were recorded and analyzed. RESULTS: The records of a total of 15 patients (aged 22 to 76, mean 45.5 years) with orbital mucoceles were selected for this study. The initial presentations included proptosis in ten patients (66.7%), diplopia in five (33.3%), ocular movement limitation in four (26.7%), periorbital pain in four (26.7%), palpable mass lesion in four (26.7%), ptosis in three (20.0%), decreased visual acuity in three (20.0%), headache in two (13.3%), and pupil abnormality with relative afferent papillary defect in one (6.67%). Of the 15 patients, the origins of the orbital mucocele were in the frontoethmoidal sinus in six (40.0%), the ethmoidal sinus in three (20.0%), the frontal sinus in three (20.0%), the maxillary sinus in one (6.7%), and the sphenoidal sinus in two (13.3%). The transcaruncular approach for the management of orbital mucoceles was performed in eight cases, the Lynch approach in three cases, the transforniceal approach in two cases, and functional endoscopic sinus surgery in one case. After surgery, no recurrence was noted. CONCLUSIONS: The frontoethmoidal sinus was the commonest origin of an orbital mucocele, and proptosis was the most frequent sign in patients with an orbital mucocele. All cases showed a favorable response to surgical intervention, and the transcaruncular approach may offer a good surgical option for the management of orbital mucoceles, especially for ophthalmologists.

Adult↗
PubMed2004

Mucoceles of the sphenoid sinus.

PURPOSE: Mucoceles of the sphenoid sinus represent 1-2% of all paranasal sinus mucoceles. The aim of this paper is to report our experiences in patients with mucoceles of the sphenoid sinus. PATIENTS AND METHOD: In a period of 4 years, we observed six patients in whom a mucocele of the sphenoid sinus was suggested pre- or intraoperatively. Symptoms and signs included headache, visual loss and palsies of the III and VI cranial nerve. All patients were investigated by MRI and/or CT. Imaging findings were compared with operative and/or histological findings. RESULTS: In three cases there were simple mucoceles, in one case we found a tumour (nasopharyngeal carcinoma) associated mucocele and in two cases, malignant tumours (carcinoma, chordoma) imitated a mucocele. The diagnosis of simple mucoceles was no problem at all by imaging. Difficulties made the two malignant tumours and the tumour associated mucocele. In the first two cases, repeated histological samples were necessary to make the final diagnosis. CONCLUSION: Mucoceles of the sphenoid sinus should be investigated and handled very carefully with regard to differential diagnoses and tumour associated cases.

Adult↗
PubMed1999

[Sinus mucoceles and surgery in iatrogenic diseases].

The increasing number of mucocele cases treated by the authors during the past ten years coincide with the expansion of functional endoscopic sinus surgery (FESS). The aim of this study is to evaluate the iatrogenic characteristics of this surgery by analysing the locations, time of development and the potential pathogenic factors of sinus mucoceles. Forty-two sinus mucoceles were operated in our department. These mucoceles were most frequently found in the anterior ethmoido-frontal system. Eleven patients had a history of endonasal ethmoidectomy mainly due to nasal polyposis. The time of mucocele formation after initial FESS (< 22 months) seems to be shorter than after exonasal sinus surgery or trauma (< 10 years). Endoscopic and CT-scan revealed different types of sinus obstruction findings: nasofrontal duct occlusion due to a fibrosis and osteogenic scar tissue process, or anterior ethmoid synechia in the case of ethmoido-frontal sinus mucocele, uncinate process fragment or scar tissue duct occlusion as far as maxillary sinus mucocele were concerned. We conclude that there seems to be a correlation between the expansion of FESS and the increasing number of mucocele cases. However, in this context it has to taken into consideration, that our department treats a considerable number of sinus pathology. Anterior ethmoid seems to be a favourable area for sinus mucocele formation. In order to prevent mucocele, it is essential to carry out FESS with great precaution. If endonasal surgery is performed, particularly in the anterior ethmoid, a close endoscopic follow-up, completed by radiological examinations, where necessary, must be ensured.

Adolescent↗
PubMed1996

[Appendiceal mucocele. Apropos of 6 cases].

Appendicular mucocele is a rare lesion presenting a combination of several histological lesions. It generally ruptures into the peritoneum and rarely into the retroperitoneum. The objective of this study was to examine the various radiological appearances of appendicular mucocele and to report three cases of mucocele which ruptured into the retroperitoneum. This retrospective series of 6 cases of histologically confirmed appendicular mucocele was collected by the Central Radiology Department of Ibn Rochd University Hospital in Casablanca. The mean age of the patients was 61.6 years (33 years-77 years) and the sex ratio was 4/2. A plain abdominal X-ray and ultrasonography were performed in all patients. Five patients were examined by CT scan and two underwent a barium enema. Five out of six mucoceles ruptured: into the peritoneal cavity in 2 cases with gelatinous ascites and into the retroperitoneum in 3 cases. The plain abdominal X-ray showed a mass in the right flank, which was calcified in 2 cases. Ultrasonography and CT scan were suggestive of the diagnosis of appendicular mucocele in only two cases. The case of non ruptured mucocele consisted of a clearly delimited, thin-walled collection. A loculated effusion with scalloping on the liver was observed in the two cases of gelatinous ascites. In the three cases of mucocele rupturing into the retroperitoneum, ultrasonography and CT scan showed a loculated retroperitoneal collection. This collection extended into the right psoas in 2 out of 3 cases. Gelatinous ascites is the usual complication of appendicular mucocele; but in rare cases of mucocele of a retrocaecal appendix, the mucus may enter the retroperitoneum.

Adult↗
PubMed2006

Nickel Gluconate-Mercurius Heel-Potentised Swine Organ Preparations: a new therapeutical approach for the primary treatment of pediatric ranula and intraoral mucocele.

OBJECTIVE: Many authors consider surgical therapy of pediatric ranula and intraoral mucocele as the election treatment. Recently, an intracystic sclerosing injection with OK-432 has been proposed as a ranula primary treatment. This preliminary study evaluates the effectiveness of the use of Nickel Gluconate-Mercurius Heel-Potentised Swine Organ Preparations as the primary treatment of pediatric ranula and intraoral mucocele. METHODS: Eighteen children (9 ranulas, 9 labial mucoceles, 2 lingual mucoceles) were treated with oral administration of Nickel Gluconate-Mercurius Heel-Potentised Swine Organ Preparations D10/D30/D200. RESULTS: Eighty-nine percent ranulas (8 out of 9), 67% labial mucoceles (6 out of 9) completely responded to the therapy. One ranula, that interrupted therapy after only 4 weeks, was subjected to marsupialization in another hospital. A double mucocele case partially responded (one of the two was extinguished), another case incompletely responded, decreasing the size beyond 50%, and just one case, changing volume, resisted the therapy. Lingual mucocele healed at once. Blandin-Nuhn polypoid congenital mucocele responded to the treatment with gradual reabsorption, permitting surgical excision of the atrophic polypoid remnant, without removing glands of origin. No solved case showed recurrence (follow up range: 4-32 months). CONCLUSION: Homotoxicological therapy with Nickel Gluconate-Mercurius Heel-Potentised Swine Organ Preparations D10/D30/D200 is an effective primary treatment of pediatric ranula and intraoral mucocele.

Adolescent↗
PubMed1987

Esophageal mucocele: a complication of blind loop esophagus.

Mucocele of the bypassed esophagus is an unusual complication of esophageal replacement and has been described only in isolated references. This report is based on our experience with 6 patients in whom a mucocele developed following esophageal replacement. Esophageal replacement was performed on 37 patients over a 10-year period at the Medical College of Georgia Hospital. A symptomatic mucocele requiring excision developed in 3 patients with achalasia, 1 with congenital tracheoesophageal fistula, 1 with esophageal atresia, and 1 with inflammatory stricture. Conduits used included stomach (4), reversed gastric tube (1), and colon (1). Our experience indicates that conversion of a closed-loop esophagus into a symptomatic mucocele is more likely in the presence of functioning, chronically irritated mucosa. The clinical features were referable to the mucocele itself or respiratory embarrassment therefrom. Thoracic roentgenograms and computed tomographic scans were diagnostic in verifying the presence of the esophageal mucocele. All five mucoceles arose from squamous epithelium. One of 3 patients with achalasia in whom a mucocele developed following esophageal replacement had premalignant changes in the mucosa. Based on this experience, our treatment of choice is early, complete excision of the mucocele.

Esophageal Diseases↗
PubMed2005

[Paranasal sinus mucoceles: surgical management and long term results].

BACKGROUND: The aim of this study was to determine the best surgical approach in the treatment of paranasal sinus mucoceles according to their localization. MATERIAL AND METHODS: A retrospective analysis was carried out in 255 patients with 290 sinus mucoceles who were treated surgically at the ENT-Department of the Hospital Fulda gAG between 1983 and 2001. This series include 125 frontal sinus, 23 frontoethmoid, 41 ethmoid, 72 maxillary sinus and 26 sphenoid mucoceles. The patients' history, presenting symptoms, radiological findings, and surgical management were reviewed. Of them, 185 patients were followed by endoscopic and CT or MRI control during a period of up to 19 years, median follow-up was 12 years. RESULTS: In 168 out of 255 patients (66 %) the mucoceles were arisen due to previous sinus surgery, in 37 cases (14 %) after traumatic lesions, in 5 patients (2 %) due to chronic sinusitis and in 2 cases (<1 %) according to tumors. In 43 cases (17 %) no causes were found. In 78.8 % the previous operation was performed via an external approach, either according to Jansen/Ritter or Caldwell-Luc, contrary to 1.5 % after endonasal surgery. The median period until mucocele appearance was 15 years for maxillary sinus, 13 years for frontoethmoid, 10 years for ethmoid, and 8 years for frontal and sphenoid sinus celes, respectively. 201 mucoceles (69.3 %) have been operated endonasal micro-endoscopically, 18.6 % via the osteoplastic approach, 10 % endoscopically combined with an osteoplastic procedure and only 2 % according to Jansen/Ritter. Thereafter, recurrence of mucoceles was found in 4 patients only ( = 2.2 %; related to the endonasal approach = 1.6 %). CONCLUSION: Frontoethmoidal, ethmoidal, sphenoidal and maxillary sinus mucoceles are excellent indication for exclusively endonasal micro-endoscopic surgery. The osteoplastic approach combined with endonasal surgery is suitable in far lateral located frontal or maxillary sinus mucoceles.

Adolescent↗
PubMed2006

Endoscopic sinus surgery for maxillary sinus mucoceles.

BACKGROUND: Maxillary sinus mucoceles are relatively rare among all paranasal sinus mucoceles. With the introduction of endoscopic sinus surgical techniques, rhinologic surgeons prefer transnasal endoscopic management of sinus mucoceles. The aim of this study is to describe the clinical presentation of maxillary sinus mucoceles and to establish the efficacy of endoscopic management of sinus mucoceles. METHODS: Between 2003 and 2005, 14 patients underwent endoscopic sinus surgery for maxillary sinus mucocele. The presenting sign and symptoms, radiological findings, surgical management and need for revision surgery were reviewed. RESULTS: There were eight males and six females with an age range of 14 to 65. Ten patients complained of nasal obstruction, five of nasal drainage, five of cheek pressure or pain and one of proptosis of the eye and cheek swelling. The maxillary sinus and ipsilateral ethmoid sinus involvement on computed tomographic studies was seen in 4 patients. Four patients had history of endoscopic ethmoidectomy surgery for ethmoid sinusitis and one had Caldwell-Luc operation in the past. Ethmoidectomy with middle meatal antrostomy and marsupialization of the mucocele was performed in all patients. Postoperative follow-up ranged between 8 to 48 months. All patients had a patent middle meatal antrostomy and healthy maxillary sinus mucosa. No patients need revision surgery. CONCLUSION: The most common causes of mucoceles are chronic infection, allergic sinonasal disease, trauma and previous surgery. In 64% of the patients of our study cause remains uncertain. Endoscopic sinus surgery is an effective treatment for maxillary sinus mucoceles with a favorable long-term outcome.

Adolescent↗
PubMed2000

Endoscopic endonasal surgery for paranasal sinus mucoceles.

Paranasal sinus mucoceles are benign, space-occupying, cystic lesions that require a surgical treatment. An endoscopic endonasal marsupialisation is nowadays the surgical approach of choice in most of the cases. The aim of the present study is to validate this option and to determine the clinical characteristics of paranasal sinus mucoceles. A retrospective study based on the clinical experience of several ENT surgeons was performed using a standardised questionnaire. The respondents participate to a report on endoscopic endonasal surgery for non-inflammatory disease in Belgium. One hundred and fourty patients presenting 178 mucoceles were included in this study. Primitive mucoceles were reported in 35% of the patients, posttraumatic mucoceles in 2.1% and postoperative mucoceles in 62.9%. The time interval between first rhinologic procedure and the mucocele diagnosis was respectively 24.4 months after FESS and 108.3 months after an external procedure. Paranasal sinus mucoceles predominantly occur in the fronto-ethmoidal region (64%), followed by the maxillary sinus (18.6%), the sphenoid sinus (8.4%) and the posterior ethmoid sinus (6.7%). Uncommon locations were also reported in 2.3% (Inferior turbinate, middle turbinate, pterygomaxillary space). Endoscopic endonasal marsupialisation (combined with an external procedure for 8 patients) was successful in 97.9% of the patients. Only 3 patients showed recurrence. Endoscopic endonasal marsupialisation of paranasal sinus mucoceles is a reliable therapeutic option with favorable results and is supported by the questioned ENT surgeons in Belgium.

Adolescent↗
PubMed2001

[Multicystic sphenoethmoidal mucocele with intracranial extension presented with generalized convulsion: a case report].

A 53-year-old male presented with generalized convulsion. Magnetic resonance imaging and computed tomography revealed large sphenoethmoidal mucocele extending intracranially. Signal intensities between paranasal and intracranial portion of the mucocele were different. Preoperatively it was not obvious that intracranial portion of the mucocele communicated with paranasal portion of the mucocele. We approached the paranasal portion of the mucocele by transsphenoidal approach resulting in disappearance of the intracranial portion of the mucocele. Sphenoethmoidal mucocele with intracranial extension presenting with generalized convulsion was the first case in the literature. Transsphenoidal approach for sphenoethmoidal mucocele with intracranial extension is the first choice of surgical treatment, though neuroimaging shows that there is no communication between paranasal and intracranial portion of mucocele.

Brain Diseases↗