A Large Solitary Fibrous Tumor of the Tongue

Preoperative transarterial embolization for solitary fibrous tumor of the tongue: A case report

Solitary fibrous tumors (SFTs) are derived from mesenchymal cells originating mainly from the pleura. Reports of bleeding SFTs in head and neck regions are rare. A number of reports have focused on tongue SFT treatments, but to the best of our knowledge, there are no reports on the usefulness of preoperative arterial embolization. Intraoperative and postoperative bleeding can also lead to airway problems. To avoid unnecessary tracheostomy and ligation of the external carotid artery, preoperative vascular embolism should be considered while removing large tumors or tumors with high blood flow. The current report outlines a case of a 32-year-old woman with a tongue solitary fibrous tumor, who underwent right lingual artery embolization with 300-500 and 500-700 µm embosphere microspheres through a vascular catheter the day before surgical resection. The encapsulated tumor was completely excised under general anesthesia with little to no bleeding during the operation.

Solitary Fibrous Tumor in Buccal Cheek Mucosa

A solitary fibrous tumor is a relatively uncommon neoplasm that usually occurs in the pleura but occurs extremely rarely in the oral cavity. Reported herein is a rare case of a solitary fibrous tumor in the buccal cheek mucosa. A 50-year-old man visited the authors' hospital due to a buccal cheek mass whose size had increased. Excisional biopsy was done under local anesthesia. After the excisional biopsy, the patient was diagnosed to have a solitary fibrous tumor. In immunohistochemistry, the patient's solitary fibrous tumor was characterized by the expression of CD34 and CD99 on the neoplastic cells, and negativity for Bcl-2 and S-100. No recurrence or complication occurred for a period of 5 years. The growth of a primary solitary fibrous tumor in the buccal cheek mucosa is extremely rare and has been rarely reported in the South Korean medical literature. A solitary fibrous tumor must be distinguished from other spindle cell tumors. Presented herein is a case of primary solitary fibrous tumor in the buccal cheek mucosa. The relevant literature is briefly reviewed.

Solitary fibrous tumour of the tongue: a series of four cases

Background:

Solitary fibrous tumour is a soft tissue tumour of mesenchymal origin. It was first described in the pleura and has since been reported in many anatomical locations. Thirteen cases in the tongue have hitherto been reported. A positive CD34 result has traditionally been used to confirm the diagnosis, although this is often non-specific to solitary fibrous tumour. To date, nuclear STAT6 expression has not been reported in solitary fibrous tumour of the tongue.

Method:

This paper presents a further four cases of solitary fibrous tumour of the tongue, the largest series to date. Clinical, histopathological and immunohistochemical findings are detailed, including nuclear STAT6 expression.

Results:

All four cases were positive for CD34; two cases showed nuclear expression of STAT6. The tumours were excised completely and there have been no recurrences in at least one year.

Conclusion:

Solitary fibrous tumour should be considered as a differential diagnosis for tongue swellings, with the potential to recur.

Malignant Solitary Fibrous Tumor of the Scalp

Solitary fibrous tumors are an uncommon slow growing benign neoplasm originally described as a pleural neoplasm but can also be found in the lung, mediastinum, peritoneum, or any other sites including the head and neck. Malignant solitary fibrous tumors (MSFT) are extremely rare and only few cases have been published in the literature. There have been 19 cases reported of MSFT in the head and neck, but there are no reports of MSFT located within the scalp in the English language literature. We present a case of MSFT arising in the scalp and describe our experience with the clinical presentation, surgical management, and outcome in this pathological condition.

Application value of MRI combined with positron emission tomography (PET)/CT in diagnosis and preoperative staging of tongue squamous cell carcinoma

INTRODUCTION

This study aimed to compare and analyse the findings of tongue squamous cell carcinoma (TSCC) on MRI and positron emission tomography (PET)/CT and explore the diagnostic utility of combined MRI-PET/CT in the diagnosis and preoperative staging of TSCC.

METHODS

A prospective analysis of MRI and PET/CT data in 18 TSCC cases was performed. Cases were comprehensively staged on MRI and PET/CT preoperatively according to American Joint Committee on Cancer (AJCC) staging criteria and confirmed by pathological results.

RESULTS

The highest and lowest sensitivities of preoperative AJCC staging I-IV using MRI alone, PET/CT alone and combined MRI-PET/CT were 100.0%, 100.0% and 100.0% (stage II) and 50.4%, 55.6% and 55.6% (stage I), respectively. The highest specificities were 100.0%, 100.0% and 100.0% (stage II), and the highest correct rates were 100.0%, 96.5% and 100.0% (stage II). Compared with the postoperative pathological staging, preoperative staging showed no significant difference for stages I-II and IV (P > 0.05); however, stage III showed a significant difference (P < 0.05). When combined MRI-PET/CT was compared with MRI alone in the accuracy of preoperative TSCC staging, there was no significant difference for stages I-III (P > 0.05), but there was a significant difference for stage IV (P < 0.05).

CONCLUSIONS

Combined MRI and PET/CT could serve as an important tool for the accurate diagnosis and preoperative staging of TSCC and could improve the accuracy of preoperative TSCC staging.