Endoscopic Medial Maxillectomy Research Articles

Medial Maxillectomy: A Must in the Armamentarium of Endoscopic Surgeons

Objectives: Since Sadeghi described the endoscopic medial maxillectomy (The Laryngoscope, 2003), this approach has become popular and indications enlarged. The aim of this work is to report on the indications and outcome of this technique in our institution.

Endoscopic medial maxillectomy as a procedure of choice to treat inverted papillomas

Conclusions: Endoscopic medial maxillectomy (EMM) is a safe, effective method for the treatment of inverted papillomas (IPs) of the paranasal sinuses. Objective: To evaluate the efficacy of EMM as a surgical technique in the treatment of IP compared with non-endoscopic techniques. Patients and methods: This was a retrospective study of 52 patients with an IP diagnosed by biopsy from 1990 to 2004. EMM was performed in 34 patients (65.4%), whereas non-endoscopic techniques were used in 18 (34.6%). The mean duration of follow-up was 54.2 months. Results: Recurrence occurred in 4 of the 34 patients who underwent EMM (11.8%; 95% confidence intervals (CI) = 39 at 26%) and in 8 of the 18 patients treated using non-endoscopic techniques (44.4%; 95% CI = 23.2 at 67.3%). There was a statistically significant difference (p<0.05) between treatments, assessed by Kaplan–Meier estimator and log-rank testing. Of the 12 patients who suffered a recurrence, 6 (50%) were treated with endoscopic surgery, 4 (33%) with mediofacial degloving and 2 (17%) were merely followed up; no malignant degeneration occurred.

Resection of pyriform aperture: a useful adjunct in nasal surgery

The aim of this paper is to describe a novel technique of improving the nasal airflow in patients in whom, despite reduction surgery to the inferior turbinates (either alone or with septal surgery), the nasal airways remain compromised because of obstruction occurring anterior to the inferior turbinate, due to a prominent nasal process of the maxilla at the pyriform aperture. We describe a novel approach to resection of the nasal process of the maxilla, a technique performed in 40 patients with either: residual obstructive symptoms following septal surgery with or without turbinate surgery; and significant inspiratory alar collapse. The same technique was also used in two patients to improve the intranasal approach to the medial and anterior maxilla during endoscopic medial maxillectomy for recurrent inverted papilloma. Patients reported a subjective improvement in their nasal airways, with resolution of inspiratory alar collapse. This technique significantly improved intranasal access in the two patients with inverted papilloma. This technique confers significant subjective improvement of nasal airways patency in selected patients, and improves endoscopic surgical access to clear inverted papilloma.

S278 – Management Strategies for Sinonasal Inverted Papilloma

Objectives 1) To compare endoscopic and external approaches in the management of sinonasal inverted papilloma at our institution. 2) To discuss the relationship of these management strategies to disease stage and malignancy. Methods Retrospective chart review of 18 patients who had operations performed to remove sinonasal inverted papilloma. Demographic, imaging and intraoperative data were collected from clinic charts. All patients had a definitive procedure performed between 2001 and 2007, with preoperative staging by CT, MRI or both. The primary outcome measure was recurrence and secondary outcome measures included association with malignancy and intraoperative complications. Results CT and MRI scanning were utilized for staging in 88% and 53% of cases, respectively. Mean follow-up was 16.3 months. All T1 lesions were managed by functional endoscopic sinus surgery (FESS). 71% of T3 lesions were managed by transnasal endoscopic medial maxillectomy (TEMM). 33% and 67% of large T3 and T4 lesions were managed with external procedures and TEMM, respectively. Recurrence rates for T1, T3, and T4 lesions were 0%, 16.7%, and 100%, respectively. Recurrence by surgical method were 0%, 18% (1 T3 and 1 T4), and 0% for FESS, TEMM and external approaches, respectively. Conclusions Inverted papilloma tended to present at more advanced stage. T1 and T3 lesions were generally managed by FESS and TEMM, respectively. Large T3 and T4 lesions were generally managed via external approaches or required further definitive management via an external approach. MRI, especially with frontal disease, may augment CT scanning, identifying true tumor mass, and thus provide indications for or against supplementary procedures.

Minimally invasive endoscopic techniques for treating large, benign processes of the nose, paranasal sinus, and pterygomaxillary and infratemporal fossae: solitary fibrous tumour

We report an extremely rare case of a large solitary fibroma of the paranasal sinus, which we treated by sinonasal endoscopic surgery. We describe its clinical and histopathological features, and we report the endoscopic technique used to deal with such a large sinonasal mass (penetrating the pterygomaxillary and infratemporal fossae); we also offer a brief survey of the literature. A woman presented with an approximately one-year history of nasal obstruction. Nasal endoscopy revealed an irregularly shaped, friable, reddish mass that occupied the whole of the right nasal fossa. Magnetic resonance imaging of the paranasal sinuses revealed a large mass that occupied the anterior and posterior ethmoids and the maxillary and sphenoid sinuses, displacing the septum and penetrating the pterygomaxillary fossa, having destroyed the lateral wall of the right nasal fossa. The tumour was resected by means of sinonasal endoscopic surgery; an endoscopic medial maxillectomy with extension to the pterygomaxillary and infratemporal regions was performed. Histological analysis confirmed the diagnosis of solitary fibrous tumour. During follow up, we performed regular nasal endoscopies, as well as computed tomography scans one and six months post-operatively. Endoscopic techniques are currently the approach of choice for the treatment of such tumours of the sinonasal cavity and pterygomaxillary and infratemporal regions. The size of the lesion did not contraindicate endoscopic sinonasal surgery as a curative treatment.

Solitary fibrous tumor in the maxillary sinus treated by endoscopic medial maxillectomy

Solitary fibrous tumor (SFT) is an uncommon neoplasm that usually arises from the pleura. Recently, SFTs have been reported in the head and neck area. SFTs of the nasal cavity and paranasal sinuses are extremely rare, with only 24 cases reported in the English literature. We describe an SFT that arose from the left maxillary sinus and extended to the nasal cavity. The tumor was removed by endoscopic medial maxillectomy, which permitted monobloc excision of the lesion. The patient is without the evidence of the disease 12 months after surgery.

Medial maxillectomy: A comparative study as a surgical procedure

The purpose of this study was to compare the long-term results of endoscopic and conventional medial maxillectomy. A prospective study. This study was conducted on 28 patients. No patient had intracranial or intraorbital extension. Thirteen patients (4 with adenocarcinoma, 5 with inverted papilloma, and 4 with malignant melanoma) underwent endoscopic medial maxillectomy, and 15 patients (5 with adenocarcinoma, 5 with inverted papilloma, and 5 with malignant melanoma) underwent conventional medial maxillectomy with a postoperative follow-up of 12 to 48 months. In group 1 (the endoscopic group), recurrence was seen in one case (7.6%) with malignant melanoma 3 months after the surgery and was managed by revision endoscopic removal of the disease. The overall success rate in this group was 92.4%. In group 2 (the conventional group), the disease recurred in one (6.6%) patient with malignant melanoma. The overall recurrence rate was 7.2%. The precise determination of tumor origin and extent of tumor during the surgery is the key to a successful outcome.

Transnasal Endoscopic Medial Maxillectomy as the Initial Oncologic Approach to Sinonasal Neoplasms: The Anatomic Basis

Transnasal Endoscopic Medial Maxillectomy as the Initial Oncologic Approach to Sinonasal Neoplasms: The Anatomic Basis

Transnasal Endoscopic Medial Maxillectomy as the Initial Oncologic Approach to Sinonasal Neoplasms

To demonstrate an anatomic basis for endoscopic medial maxillectomy with excision of the lateral nasal wall to the nasal floor, including the inferior turbinate, and nasolacrimal duct. Transnasal endoscopic medial maxillectomy involves complete resection of the lateral nasal wall with boundaries that are inferior to the nasal floor; superior to the cribriform plate and fovea ethmoidalis; anterior to the anterior maxillary wall, including the nasolacrimal duct; and posterior to within 5 mm of the eustachian tube. Transnasal endoscopic medial maxillectomy provides exposure for endoscopic resection of the orbital wall, pterygopalatine fossa, pterygoid plates, nasopharynx, and anterior skull base when indicated. Volumetric analysis of the maxillary sinus was performed on axial and coronal computed tomographic scans of 19 adult patients for a total of 38 maxillary sinuses. Tertiary care medical center. Nineteen adult patients with tumors of the head (but outside the sinonasal region). Radiographic analysis. The total volume of the maxillary sinus, volume above and below the superior attachment of the inferior turbinate, and volume anterior to the nasolacrimal duct were measured. The mean (SD) total volume of the maxillary sinus was 20.1 (4.2) cm(3), whereas its volume inferior to the superior attachment of the inferior turbinate was 12.9 (3.7) cm(3) and anterior to the nasolacrimal duct was 1.1 (0.6) cm(3). The mean (SD) volume of the maxillary sinus inferior to the superior attachment of the inferior turbinate was 64% (12%), whereas the nasolacrimal duct obscured the transnasal anterior exposure of the maxillary sinus. Without excision of the lateral nasal wall inferiorly to the nasal floor and anteriorly, including the nasolacrimal duct, over half of the maxillary sinus would be inaccessible for procedures directed at neoplasms within the maxillary sinus.

Preoperative Staging and Surgical Approaches for Sinonasal Inverted Papilloma

We sought to determine the value of preoperative staging by magnetic resonance imaging (MRI) assessment in the surgical management of sinonasal inverted papillomas (IPs). Preoperative MRI staging was used to assess 22 patients with IPs. In addition to the Krouse staging system, T3 cases were categorized as subgroup T3-B if tumors extended into the frontal sinus or the supraorbital recess; otherwise, they were categorized as T3-A. Standard endoscopic sinus surgery (ESS) was the first choice for T1 and T2 cases. Endoscopic approaches, including ESS combined with endoscope-assisted transantral approach and endoscopic medial maxillectomy, were considered in T3-A cases, and external approaches were considered in T3-B cases. Patients were followed for a minimum of 1 year after surgery. Preoperative MRI staging and postoperative staging were coincident in 21 of the 22 patients (95%). All 8 T2 cases were treated by an endoscopic approach. Of 10 T3-A cases, 9 (90%) were treated by an endoscopic approach and 1 (residual case) was treated by an external approach. All 3 of the T3-B cases underwent an external approach. One T4 case with malignant transformation underwent an external approach followed by radiotherapy. After a median follow-up period of 22 months, none of the 22 patients had had a recurrence. No major complications were observed after endoscopic approaches, but epiphora or hemorrhage requiring transfusion occurred in 3 of the 5 patients (60%) who underwent external approaches. Preoperative staging of IP by MRI is useful for selecting cases that can be managed by endoscopic approaches, resulting in lower rates of tumor recurrence and morbidity.

Inverted Papilloma of the Nasolacrimal System Invading the Orbit

A 73-year-old man with a history of epiphora, discharge from the left eye, and left-sided nasal congestion underwent external dacryocystorhinostomy for nasolacrimal duct obstruction. The procedure revealed bony erosion of the majority of the lacrimal sac fossa and a large papillomatous mass filling the lacrimal sac and nasolacrimal duct. Inverted papilloma was diagnosed via biopsy. A subsequent orbitotomy with combined endoscopic medial maxillectomy was performed to remove the mass. This case illustrates the importance of including inverted papilloma, a benign but invasive neoplasm, in the differential diagnosis of nasolacrimal duct obstruction.

Outcomes of the Extended Endoscopic Approach for Management of Inverted Papilloma

Inverted papilloma (IP) is a benign tumour involving the paranasal sinuses. Given its tendency to recurrence and potential for malignancy, complete removal of the papilloma remains the treatment of choice. Since 1994, we have routinely employed an extended endoscopic approach for the resection of inverted papillomas. We present our methods and outcomes. The study was conducted in an academic tertiary care hospital-based practice. It is a retrospective review of patients treated by a single surgeon. IP was diagnosed by biopsy before surgery. With computed tomography and magnetic resonance imaging, we attempt to identify the sites of origin and extent of IP. Cases with previous medial maxillectomy or invasive disease are treated via the open approach. Otherwise, the extended endoscopic approach is used. The tumour is debulked, and its attachment points are identified. Endoscopic medial maxillectomy is then performed. If maxillary sinus involvement in its anterior, inferior, superior, or lateral portion is suspected, a Caldwell-Luc approach is performed to allow for mucosal excision and complete removal of the anterior lateral nasal wall. When the lamina papyracea or ceiling of the ethmoid or sphenoid sinus is involved, the bony wall is resected. The frontal recess can be approached via a Lynch incision or an endoscopic transorbital approach. Twenty-two patients were referred for IP. Nineteen patients were treated via the extended endoscopic approach. The average follow-up period was 23 (3-66) months. Only 3 of 19 patients (16%) presented with a recurrence or failure of initial surgery that required revision surgery. The extended endoscopic approach offers a safe, effective, and aesthetically acceptable treatment of most cases of IP.

Functional Endoscopic Sinus Surgery (FESS).

Functional Endoscopic sinus surgery (FESS) is a minimally invasive surgical procedure that opens up the sinus air cells and the sinus ostia with an endoscope. The use of FESS as a sinus surgical method has now become widely accepted and the term functional is meant to distinguish this type of endoscopic surgery from the nonendoscopic more conventional sinus procedure. Functional Endoscopic sninus surgery is being done regularly at TU Teaching Hospital from 2003. Total number of cases done from March 2003 till December 2005 were 94. Maximum number of FESS was done for nasal polyps, which was carried out in 80 patients, out of which, FESS for ethmoidal polyp was done in 47 patients and for antrochoanal polyps in 33 patients. Other conditions where FESS was carried out were chronic maxillary sinusitis in 8 patients, fungal sinusitis in 5 patients, and endoscopic medial maxillectomy for inverted papilloma in 1 patient.

Modified Endoscopic Medial Maxillectomy for Chronic Maxillary Sinusitis

Recently, modified endoscopic medial maxillectomy (MEMM) has been described as an alternative technique to open maxillectomy for benign sinonasal neoplasms. However, few reports discuss the efficacy of MEMM for treatment of inflammatory disease of the maxillary sinus. We evaluate the efficacy of MEMM in treating chronic maxillary sinusitis. A retrospective review of patients who underwent MEMM for refractory inflammatory disease between December 2002 and September 2004 was performed. All patients were treated with MEMM alone or as part of an endoscopic sinus surgery procedure. Standard demographic data, operative technique, and postoperative follow-up times were collected. Nineteen patients (average age, 57 years) underwent 24 EMMs for chronic maxillary sinusitis refractory to middle meatal antrostomy. All patients failed prior sinus surgery, including 14 Caldwell-Luc procedures. Average follow-up was 19.5 months (range, 10-27 months). One patient has persistent hyperplastic sinusitis that currently requires monthly follow-up and medical treatment. Our only complication was one nasolacrimal duct injury. MEMM is both a safe and an effective treatment for chronic maxillary sinusitis refractory to standard medical and endoscopic surgical management.

Inverted Papilloma: New Classification and Guidelines for Endoscopic Surgery

Surgery is the gold standard in the management of inverted papilloma (IP); however, the approach and extent of the surgical procedure are still controversial. Moreover, there is still no universal staging system of IP to plan surgery and/or evaluate results. We performed a retrospective study. A new classification depending on the origin of the lesion was used to plan surgery in 70 cases of IP. Conservative transnasal endoscopic excision was performed in lesions arising from the nasal septum and lateral nasal wall (type I IP, 42 cases) and radical transnasal endoscopic medial maxillectomy was performed in lesions arising from the maxillary sinus (type 1 IF, 28 cases). Excluding cases with a follow-up of <2 years, follow-up for periods ranging between 2 and 13.3 years with a median of 78 months showed recurrence in a single case of type I (3.2%) and 2 cases of type II (9.5%). The new classification system, based on the origin of IP, is a simple tool for grading IP. It can be used to define cases suitable for conservative excision or radical medial maxillectomy. Both could be performed transnasally and endoscopically.

Indications for the Caldwell-Luc approach in the endoscopic era

Caldwell and Luc described the Caldwell-Luc operation more than 100 years ago as the surgical treatment for maxillary sinus disease. During the last decades less radical interventions using endoscopic approach have mainly replaced the classical procedures done for chronic and recurrent maxillary sinusitis. Between 1991 and 2002, 62 patients had the Caldwell-Luc approach for different indications. Twenty (32%) patients had chronic sinusitis, 16 (26%) patients had inverted papilloma, 9 (15%) patients had suffered from nasal polyposis, 4 patients (6%) had dentigerous cyst, 4 (6%) patients had fungal ball, and 9 (15%) patients were operated for other indications. The use of this surgical approach is rational in cases of fungal disease and in endoscopic medial maxillectomy for treating inverted papilloma. In all other cases, the preferred approach should now be endoscopic.

Ｔｒａｎｓｎａｓａｌ Ｅｎｄｏｓｃｏｐｉｃ Ｍｅｄｉａｌ Ｍａｘｉｌｌｅｃｔｏｍｙ３例の経験―鼻副鼻腔乳頭腫に対する手術法―

This study was performed to review the experience of 3 patients with sinonasal inverted papilloma who underwent transnasal endoscopic medial maxillectomy. The average operative time was 1 hour 38 minutes and the average blood loss was 123ml. There was no recurrence with average follow-up of 28.7 months. I discuss the management of the medial wall of the maxillary sinus during resection of the tumor. Transnasal endoscopic medial maxillectomy is an effective technique for inverted papilloma with extension to the maxillary sinus.

Tailored endoscopic surgery for the treatment of sinonasal inverted papilloma.

This retrospective study was designed to evaluate the efficacy of tailored endoscopic surgery. Tailored endoscopic surgery aims at resecting the inverted papilloma completely with a customized surgical approach, especially when an en-bloc excision cannot be comprehensively or routinely achieved because of the immense extent of the tumor. Between November 1991 and March 2002, 43 patients with sinonasal inverted papillomas were treated by tailored endoscopic surgery. The average duration of follow-up for this population was 25.3 months (range, 9-150 months). A staging system developed by Krouse was adopted for tumor grading. On the basis of tailored endoscopic surgery, 15 localized lesions and 12 smaller extensive lesions (Krouse stages 1 and 2) were treated by ordinary endoscopic resection, whereas 16 larger extensive lesions (Krouse stages 3 and 4) in which the tumors were immense were subjected to sequential segmental endoscopic surgery (SSES). Seven of these 16 larger extensive lesions combined with endoscopic medial maxillectomy because of extensive encroachment of maxillary sinus antrum. Four patients (9.3%) had residual disease, each requiring one revision surgery. All tumors were successfully resected. No patient required lateral rhinotomy or midfacial degloving procedure. No major complications were encountered in any of the patients. None of the patients had residual disease at the time of this writing. Tailored endoscopic surgery is a safe and effective treatment that obviates the need for more extensive surgery for the management of inverted papilloma. Proper preoperative evaluations, intraoperative determination of extent and attachment of the tumor, close endoscopic follow-up, and expert application of endoscopic techniques are the keys to the successful use of tailored endoscopic surgery.

Endoscopic surgery for recurrent inverted papilloma.

Inverted papilloma of the nose and paranasal sinuses is noted for its high rate of recurrence. The feasibility of endoscopic treatment for inverted papilloma has been shown in the literature; however, reports discussing the efficacy of endoscopic surgery for recurrent diseases are rare. The study determined the effectiveness of endoscopic surgery for recurrent inverted papilloma and described when endoscopic medial maxillectomy was indicated. Retrospective. Seventeen patients with recurrent inverted papilloma were treated over a 10-year period. Krouse's staging system was used for tumor grading. Because of the extent of the tumor in the majority (70.6%) of the patients, en bloc resection could not be regularly achieved; therefore, sequential segmental endoscopic surgery was the chosen treatment. Some diseases that extensively involved the maxillary sinus were treated by the combination of endoscopic medial maxillectomy (EMM) and sequential segmental surgery (SSES) to extirpate the whole disease. Efficacy was evaluated strictly by radiographic study. Successful treatment was accomplished in 14 (82.4%) patients. Three (17.6%) patients had residual disease; each required one revision surgery. None of the patients had recurrence at the time of writing. There were no major complications or associated malignancies encountered in the patients. Endoscopic surgery is an effective treatment for recurrent inverted papilloma. Precise determination of the sites of tumor origin and attachment during the operation is the key to the successful treatment. Recurrent inverted papilloma tends to behave more aggressively and has a higher postoperative recurrence rate than the primary lesion. Stage III disease had a higher recurrence rate (27.3%) than that of other stages (0%).

Endoscopic removal of sinonasal inverted papilloma including endoscopic medial maxillectomy.

Surgical excision is regarded as the treatment of choice for sinonasal inverted papilloma. Resection can be performed endoscopically or through an external approach. Debate exists about which approach to use. The study presents different endoscopic techniques for various tumor locations and reviews the results. A prospective study and an integrated literature review. Seventeen consecutive patients with inverted papilloma who underwent endoscopic surgical excision, including medial maxillectomies and modified Lothrop procedures, were analyzed. Preoperative symptoms, computed tomography and magnetic resonance imaging findings, operative findings, tumor stage, and outcomes were recorded. Thirteen male and four female patients presented with inverted papilloma between December 1993 and October 2001. Nasal obstruction was the most common presenting symptom (50%). Sixty-five percent of tumors were either stage II or stage III. Endoscopic resection was the primary treatment in 14 patients. Of the three patients who were secondarily treated endoscopically, one had recurrence and was subsequently found to have focus of squamous cell carcinoma. The overall recurrence rate was 6% and the incidence of malignancy was 6% (1 of 17). Recurrence rate for primary resections was zero (0 of 14). Five patients underwent endoscopic medial maxillectomies, and one patient with frontal sinus inverted papilloma was successfully treated with a modified endoscopic Lothrop procedure. Endoscopic sinus surgery is a viable treatment alternative for sinonasal inverted papilloma. Recurrence rates for primary treatment are comparable to external approaches. Close follow-up of patients is mandatory because recurrence may be associated with malignancy.