Solitary Fibrous Tumour

Solitary Fibrous Tumour
(a) Intraoral photograph: a painless submucosal mass in the right buccal region. (b) Doppler ultrasonography of the buccal mass. High blood flow was observed around the nodular mass with low echogenicity. (c) Horizontal CT images. (d) MR images. T1-weighted imaging. (e) Tumor cells were arranged in a patternless manner. Variation in the size and shape of the cells or their nuclei was not conspicuous (FNAB hematoxylin/eosin staining). (f) Tumor cells showed diffuse positivity for CD34 (FNAB IHC) and (g) nuclear positivity for STAT6 (FNAB IHC).

Case of solitary fibrous tumour in buccal space in 39-year-old.

This article describes the case of a solitary fibrous tumour in the buccal space of a 39-year-old Japanese woman. The patient presented to the Oral and Maxillofacial Surgery department at Okoyama University Hospital with a 3-year history of a buccal mass. The mass had been growing slowly for 3 years. However, there were no medical records regarding the mass. Clinical examination showed a well-defined mass with rounded margins in the buccal space, measuring 1.5 x 1.5 cm. The mass was free from skin and muscles.

Examination did not show any palpable lymph nodes in the neck. Neither did the mass cause any pain. Doctors advised a colour doppler ecographic examination which showed a high flow velocity of the blood surrounding the mass. Contrast-enhanced CT, T1 weighted image on magnetic resonance imaging revealed a 1.5 x 1.5 cm homogenous mass, present in front of the masseter muscle. The mass showed well-defined margins. Fine-needle aspiration biopsy showed spindle cells arranged and lined in a patternless manner. The spindle cells were strongly positive for CD34. STAT 6 and vimentin on immunohistochemistry. However, negative for EMA, S100, and α-SMA.

Doctors removed the mass surgically under general anaesthesia.

The mass was surgically removed under general anaesthesia. The tumour was encapsulated with connective tissue and was easily separated from the later structure. Doctors discharged the patient 4 days after surgery. There were no signs of nerve injury or recurrence at 12 months follow-up.


Solitary Fibrous Tumor Arising in the Buccal Space

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Dr. Aiman Shahab is a dentist with a bachelor’s degree from Dow University of Health Sciences. She is an experienced freelance writer with a demonstrated history of working in the health industry. Skilled in general dentistry, she is currently working as an associate dentist at a private dental clinic in Karachi, freelance content writer and as a part time science instructor with Little Medical School. She has also been an ambassador for PDC in the past from the year 2016 – 2018, and her responsibilities included acting as a representative and volunteer for PDC with an intention to make the dental community of Pakistan more connected and to work for benefiting the underprivileged. When she’s not working, you’ll either find her reading or aimlessly walking around for the sake of exploring. Her future plans include getting a master’s degree in maxillofacial and oral surgery, settled in a metropolitan city of North America.


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