Solitary neurofibroma of the inferior nasal turbinate

A Rare Case of a Large Sinonasal Neurofibroma

A neurofibroma is a benign peripheral nerve sheath tumor. Its appearance in the nose and paranasal sinuses is extremely rare. We present the case of a 61-year-old female with a large sinonasal neurofibroma. The patient was referred to our department due to the findings of a large invasive lesion originating from the left sinus with extension to the adjacent structures on computed tomography. A thorough examination revealed a mass within the left nasal cavity and exophthalmos. The initial symptoms of the disease probably appeared three years ago when she reported that she developed facial swelling following dental work. In the following period and due to reported blurred vision, she consulted with several medical specialists without receiving a diagnosis, while later she visited an otorhinolaryngologist, complaining of ear fullness, and local treatment was prescribed. Due to persistent symptoms, the patient was finally referred for computed tomography. Upon arrival at our department, she underwent a biopsy, which revealed the existence of a neurofibroma. The patient underwent endoscopic resection of the tumor and remains under close follow-up with no signs of recurrence. Sinonasal neurofibroma is a rare condition that presents with non-specific symptoms and may take years to reach a diagnosis. Open or endoscopic surgical resection seems to offer satisfactory results; however, similar cases reported in the literature are scarce.

Neurofibroma of the Nasal Ala: Pediatric Nasal Reconstruction

Benign tumors of the nasal cavity originating from a peripheral nerve sheath are rare. The authors present a case of a 3-month-old boy with a mass in the left nasal vestibule. The surgical resection was complicated by full-thickness necrosis of more than 50% of the nasal ala. The tumor was diagnosed histopathologically as a neurofibroma with glial heterotopia. The details of the nasal reconstruction with a paramedian forehead flap in 3 stages and postoperative results are provided with satisfactory cosmetic and functional results.

Neurofibroma at unusual locations: report of two cases in teenage girls

Solitary neurofibromas are rare occurrence in salivary gland region as well as mons pubis of females. We present two cases of teenage girls with swelling in parotid region and mons pubis. Fine needle aspiration cytology was inconclusive in both cases. They were both managed surgically and a diagnosis of neurofibroma was ascertained histopathologically and also confirmed with S-100 immunohistochemistry. The patients were followed up for a period of six months, however, no recurrence was noted. Though, one patient had a previous history of recurrence. We report these cases in view of their rarity of site and age as well as no correlation with neurofibromatosis and clitoromegaly.

Solitary neurofibroma originating from the posterior nasal septum: Transnasal endoscopic resection

INTRODUCTION

The head and neck region is one of the locations of neurogenic tumors such as neurofibroma. Although mostly associated with neurofibromatosis, it can be solitary. The present study reports a very rare case of solitary neurofibroma originating from the posterior nasal septum.

CASE PRESENTATION

A 48-year-old female presented with tumor in the right nasal cavity. The tumor, originating in the posterior nasal septum, extended to the posterior sinuses and nasopharynx. Following endoscopic and radiological assessment, the tumor was resected by transnasal endoscopic surgery. Histological examination showed the tumor to be a neurofibroma. At 14months' follow-up, there was no recurrence.

DISCUSSION AND CONCLUSIONS

However rare, solitary neurofibroma must be considered in the differential diagnosis of unilateral benign tumor involving nasal and paranasal sinuses. A transnasal endoscopic approach should be considered for treatment.

Sinonasal Tract Neurofibroma: A Clinicopathologic Series of 12 Cases with a Review of the Literature

Neurofibroma (NF), a benign peripheral nerve sheath tumor, is very uncommon in the sinonasal tract, with only a few reported cases in the English literature. Cases within the files of the authors' institutions confined to the sinonasal tract were compared to cases reported in the English literature (Medline 1966-2014). The 12 patients included 6 females and 6 males, aged 26-75 years (mean 46.2 years). The patients usually presented clinically with a mass lesion (n = 11), obstruction (n = 4) or pain (n = 3), with an average symptom duration of 42.9 months. Two patients had neurofibromatosis (NF1). Tumors involved the nasal cavity alone (n = 8), maxillary sinus alone (n = 2), or mixed sites (n = 2), with a range of 0.4-4.1 cm (mean 2.2 cm). The tumors were circumscribed, composed of spindled to wavy cells with curvilinear nuclei set in a background of collagenized stroma and mast cells. Nuclear palisading and perivascular hyalinization were not seen. Mitoses were scant. Pleomorphism, necrosis and increased cellularity were absent. By immunohistochemistry, the lesional cells were S100 protein, SOX10 and NFP positive, while CD34 highlighted the perineurium. INI1 was intact, with strong nuclear expression in all cases. All patients had surgical excision without recurrence (mean follow-up 8.6 years). The principle differential diagnoses include schwannoma, perineurioma, fibromatosis, and solitary fibrous tumor. NF of the sinonasal tract occurs in middle-aged patients without a gender predilection, usually with non-specific symptoms present for a long duration. Tumors are relatively large (mean 2.2), and usually affect one site only. Surgery is curative, with only 16.7 % NF1 associated. S100 protein, SOX10 and NFP highlight the Schwann cells, with CD34 highlighting the perineural fibroblasts.

Giant solitary neurofibroma presenting as a neck mass in an infant

Solitary neurofibroma is a rare tumor of the head and neck region. It is more common in viscera, where it is associated with features of NF1. It occurs most often between the third and fourth decade. These lesions are extremely rare in infants. We report a case of giant, solitary neurofibroma presenting as a progressive mass in parotid region in an infant. This case is unique in its age of presentation (11 months), site, size (about 8 × 15 cm) without any symptoms or neurological deficit.

A case of solitary neurofibroma of the nasal dorsum: resection using an external rhinoplasty approach

A 7-year-old girl had suffered from progressive swelling of the nasal dorsum over 2 years. Computed tomography and magnetic resonance imaging showed a large soft tissue density in the nasal dorsum. Tc-99m DTPA cisternography and brain SPECT showed a restricted mass in the nasal dorsum without intracranial connection. The mass was resected using an external rhinoplasty approach, and the pathologic diagnosis was of neurofibroma. Furthermore, the nasal dorsum was identified as the origin of the neurofibroma without the stigma of neurofibromatosis. Here, we present this case and discuss the clinical and pathological aspects of neurofibroma arising in the nasal dorsum.