Myxoma of maxilla

A case of Myxoma involving left Maxilla, presenting as swelling of left side of face and Oral cavity with bilateral nasal obstruction is reported.     

Giant supraglottic schwannoma

Schwannomas arising from the supraglottis are uncommon, if not rare. They are known to arise from the head and neck region but oropharyngeal presentation is not often seen. Few cases of pedunculated schwannoma arising from the aryepiglottic fold presenting as giant tumours in the oropharynx have been reported so far. The tumour in this case has been excised via intraoral approach, with nil residual morbidity. A follow up period of one year was uneventful without any recurrence.     

Malignant schwannoma of the mandible: a case report

This article describes a 59-year-old woman with a rare malignant schwannoma invading the left mandible. The clinical, radiological, pathological findings, treatment, and prognosis of our patient are discussed in detail. A 4-year cure was achieved by radical surgery and concurrent chemoradiotherapy (CCRT). In addition, we also review and summarize relevant literature on malignant schwannoma.     

Aggressive cementifying fibroma of the maxilla

Summary The cementifying fibroma is a benign fibro-osseous lesion. Its usual location is in the mandible while rare sites of involvement have been the maxilla and ectopic locations. These tumors are generally believed to originate from the connective tissue of the periodontal ligament. Clinically, lesions are usually asymptomatic, slow-growing, and well-circumscribed. However, in very few cases, particularly in younger patients, these tumors have demonstrated and apparent aggressive course of development. We describe a case of an aggressive cementifying fibroma of the maxilla in a middle-aged male. The pathogenesis of the tumor is discussed, and the need for appropriate surgical management is emphasized.     

Sinonasal schwannoma with secondary changes

Schwannomas of the Sinonasal tract are very rare, representing less than 4% of schwannomas arising in the head and neck [1]. The most frequent site is the acoustic nerve; other locations include the scalp, oral cavity, pharynx, larynx, trachea, parotid gland, and middle ear. Secondary changes in a Schwannoma are a very rare entity. We report a case of Sinonasal schwannoma with pseudoangiomatous changes. The purpose of this article is to highlight the possibility of unusual presentation of a sinonasal schwannoma     

Spontaneous expulsion of schwannoma of epiglottis

A rare case of spontaneous expulsion of schwannoma of epiglottis is being reported. These are neurogenic tumours arising from the schwan sheath of peripheral, cranial and sympathetic nerves. The great majority of these neurogenic tumours originate from aryepiglottic fold or false vocal cords. However the neurofibroma of the epiglottis are quite uncommon.     

Pediatric palate schwannoma

We present a case of a pediatric patient with a schwannoma of the palate. An 11-year-old girl presented with a one-year history of a slowly enlarging right palate mass, which was otherwise asymptomatic. An MRI showed a well-marginated legion with prominent enhancement and possible calcifications. She underwent a wide local excision, and pathologic analysis characterized the lesion as a schwannoma. The defect was reconstructed using a pre-fashioned obturator and allowed to heal by secondary intention. Palatal schwannomas are rare, especially in the pediatric population. At most recent follow up the surgical site is well healed with no evidence of recurrence.     

Brown tumor of the maxilla associated with primary hyperparathyroidism

Brown tumors represent the terminal stage of the remodeling processes during primary or secondary hyperparathyroidism. During the last three decades primary hyperparathyroidism has been recognized much more commonly and the increase has generally been attributed to the routine determination of calcium by new automated methods and the advent of new and more objective parathyroid hormone radioimmunoassay techniques. Early diagnosis and successful treatment of the disease have made clinical evidence of bone disease uncommon. While, the mandible is the most frequently involved bone in the head and neck region, maxillary involvement is extremely rare. A case of brown tumor on the maxilla associated with primary hyperparathyroidism is reported. This patient presented multiple skeletal lesions, which are uncommonly seen nowadays. The diagnosis was suggested by the clinical history and confirmed by biochemical, radiological and histopathological determinations. Excision of a parathyroid adenoma normalized the metabolic status. Excision of the maxillary mass led both histopathological confirmation of the disease and early masticator rehabilitation.     

A schwannoma in the nasal septum

Schwannomas of the sinonasal tract are very rare neoplasms. We present the case of a schwannoma developing in the nasal septum. The patient was a 51-year-old woman with the complaint of unilateral nasal obstruction. We completely removed this tumor by an endoscopic approach. We discuss the clinical presentation, differential diagnosis, and treatment of this rarely encountered neoplasm.     

A schwannoma mimicing hypopharyngeal carcinoma

Hypopharyngeal schwannoma is quite rare, with only nine cases presented in the literature to our knowledge. The presentation itself requires a distinction from malignant hypopharyngeal disease, which is usually the initial diagnosis. A transcervical approach and laryngomicrosurgery are two possible operating methods for the treatment of hypopharyngeal schwannoma. The selection of the surgical method depends on the size of the tumor. For this case, we preferred the transcervical approach without tracheotomy. In contrast to previous case reports, we were unable to trace the original nerve.     

Frontal sinus schwannoma

IntroductionNasal sinus schwannomas are rare tumors, particularly in the frontal sinus.Case reportThe authors report the case of a woman with left frontal sinus schwannoma discovered in a context of frontal sinusitis with orbital and ocular complications. The surgical procedure consisted of endonasal tumor resection and external drainage.DiscussionThe pathogenesis of frontal sinus schwannomas remains unclear. These tumors can present with a wide range of clinical and radiological signs, making them difficult to diagnosis. Surgical resection of these tumors is also complex.     

Recurrent odontogenic myxoma of maxilla: a diagnostic and operative dilemma

Odontogenic myxoma of maxilla is a very rare occurrence. It is a slow growing benign, locally malignant tumor notorious for recurrence. Hereby we present a case of recurrent odontogenic myxoma of the maxilla in a 32-year-old male managed surgically by partial maxillectomy. The diagnostic and operative dilemmas encountered while managing the case are discussed in detail.     

Intraparotid facial nerve schwannoma: management options

Intraparotid facial nerve schwannoma (FNS) is a very rare, benign tumour mimicking pleomorphic adenoma. Resection of this slow growing tumour may result in unnecessary facial nerve paralysis. The aim of this study is to present results of facial nerve schwannoma treatment at our institution and proposes a management plan. This is a retrospective case series of four patients, three male and one female with a mean age of 47.7 years who presented with a long-standing, asymptomatic parotid swelling. Two patients had facial weakness and underwent superficial parotidectomy, resection of tumour and facial nerve repair with a free graft from the greater auricular nerve. Two patients underwent biopsy without tumour resection. All tumours were confirmed histologically as facial nerve schwannomas. The mean follow up period was 3.5 years. Patients with resection of facial nerve schwannoma had a postoperative House Brackmann grade III and IV. Patients with biopsy had normal postoperative facial nerve function and the tumour did not grow significantly. No adverse effects or recurrence were reported. There is no preoperative diagnostic modality that can identify facial nerve schwannoma with certainty. Difficulty in locating the facial nerve intraoperatively raises suspicion of a neurogenous tumour of the facial nerve and this may prevent unnecessary damage to the nerve. Not every facial nerve schwannoma should be resected. This decision is based on (a) the extent of tumour (b) preoperative facial nerve function (c) best results achieved with nerve repair and (d) patient’s preferences. Large tumours with extension into the mastoid cavity or encroachment of sensitive structures and preoperative facial weakness are indications for surgical intervention. In most other cases, biopsy and observation suffices.     

Solitary malignant schwanoma of para pharyngeal space-a case report and review of literature

Malignnant Schwannom is an aggressive tissue tumor that is more cnmitutnh found m assoiiatiun with Ion Recklinghausens disease. The solitary tumors although rarer have a better prognosis when compared to those associated witk tan Recklinghausens disease. Parupharyngeui tumors are rare and a majority af these are benign salivary or neurogenie tumors, A malignant Schwannoma at this site is very infrequent with only four earn reported so far. The tase of a 16 year old girl with a parapharynccal malignant Schwnnaomu is presented Jor its rarity and our experience in dealing with it. .A combined modallty oftretument with surttery, radiotherapy and chemotherapy Was used. Pertinent literature h revlewed     

Aggressive aneurysmal bone cyst of the maxilla confused with telangiectatic osteosarcoma

Aneurysmal bone cyst (ABC) is a benign, expansile lesion typically affecting the long bones and vertebrae of patients younger than 20 years. Approximately 2% of ABCs occur in the head and neck region, most commonly affecting the mandible. Although the most common co-existing lesion associated with ABCs is the giant cell tumor, ABCs can be radiologically confused with telangiectatic osteosarcoma in cases of aggressive behavior and rapid growth. Here, we report a case of an aggressive ABC of the maxilla confused with telangiectatic osteosarcoma in a patient who underwent several operations for an osteoblastoma that was diagnosed histopathologically. This case highlights the need for a differential diagnosis both radiologically and histopathologically, because ABCs can easily be interpreted as a giant cell tumor or an osteoblastoma, and, on occasion, can be mistaken for osteogenic malignancies.     

Cervical sympathetic schwannoma with postoperative first bite syndrome

Extracranial schwannomas occurring in the head and neck region may arise from cranial, peripheral or autonomic nerves. Determination of the nerve of origin is not often made until the time of surgery. Schwannomas arising from the cervical sympathetic chain are extremely rare. These interesting tumors along with schwannomas in general and the remaining class of neurogenic tumors are known for their ability to mimic the physical and radiological findings of carotid body tumors. Surgery is the treatment of choice and major complications are infrequent. However, we report a case of cervical sympathetic chain schwannoma with postoperative first bite syndrome.     

Intravestibular space occupying lesions of lipoma and schwannoma

Intravestibular lipoma (IVL) and intravestibular schwannoma (IVS) are rare tumors occupying the intravestibular space. Patients with IVL or IVS complain of hearing impairment, tinnitus or recurrent rotatory vertigo. Therefore, the clinical practitioner could misdiagnose them as sudden sensorineural hearing loss or Meniere's disease. Since delayed diagnosis and treatment could lead to more severe and refractory symptoms, clinicians should have a high index of suspicion for early diagnosis. Recent advancements in imaging diagnostic tools such as computed tomography and magnetic resonance imaging have facilitated the correct diagnosis of these intravestibular tumors without surgical removal. Presently, we report two different kinds of intravestibular tumors of lipoma and schwannoma which manifest different clinical course and treatment strategies.     

Myxoid chondrosarcoma of the maxilla in a pediatric patient

Myxoid chondrosarcomas of the head and neck region are rare. We report the case of an 8-year-old boy with progressive unilateral nasal obstruction resulting from a highly differentiated myxoid chondrosarcoma of the maxilla extending to the nasal cavity and the ethmoid. Clinical presentation, histological findings and therapy are presented with a brief review of the literature. This case reaffirms the importance of considering sarcomas or other neoplastic lesions in the differential diagnosis of progressive nasal obstruction in children.     

Recurrent plexiform schwannoma involving the carotid canal

Plexiform schwannoma (PS) is a rare variety of benign nerve sheath tumor characterized by a multinodular plexiform growth pattern. PS is usually confined to the head and neck or skin. The pre-operative diagnosis of PS is difficult, and this has lead to a common misdiagnosis as a schwannoma. In addition, studies have indicated that an incomplete resection of PS often results in tumor recurrence. Here we describe a rare case of PS presented in the parapharyngeal space. Our case involved a 36-year-old man with swelling of the pharynx, who presented with a soft cervical mass. MRI revealed a multinodular mass in the left parapharyngeal space, and further pathological diagnosis by the referral hospital indicated schwannoma. A cervical approach was taken and the tumor was removed with preservation of the nerve sheath by intracapsular resection. The tumor recurred within one year after the first surgery in the same lesion of the left parapharyngeal space. The second surgical approach was a combination of a facial dismasking flap and trans-pterygopalatine fossa. The mass was resected completely, and the diagnosis of PS was confirmed by histopathology. While schwannoma commonly occurs in the head and neck, parapharyngeal space PS is rare, and pre-operative pathological diagnosis of PS is difficult. MRI studies of PS revealed distinctive features that we found useful in pre-operative diagnosis. Intracapsular resection of PS with nerve preservation has a very high recurrence rate of the tumor. Therefore, if MRI findings suggest PS we recommend removing the tumor completely without nerve preservation will offer the most curative outcome.