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Fulltext Solitary fibrous tumour of the pleura presenting with refractory non-insulin mediated hypoglycaemia (the Doege-Potter syndrome)

Lee CE, Zanariah H, Masni M, Pau KK

Med J Malaysia, 2010 Mar;65(1):72-4.
PMID: 21265256 MyJurnal

We report a case of a 61 year-old man who presented with refractory non-insulin mediated hypoglycaemia. A chest radiograph showed a right lung opacity, which was confirmed as a large intra-thoracic mass by computed tomography (CT) of the thorax. CT-guided biopsy with histological examination revealed features of a solitary fibrous tumour of low malignant potential. We discuss the association of solitary fibrous tumour of the pleura (SFTP) with hypoglycaemia, and the management of such rare tumours.

Matched MeSH terms: Solitary Fibrous Tumors/complications*; Solitary Fibrous Tumors/pathology; Solitary Fibrous Tumors/therapy
Gastrointestinal: Solitary fibrous tumor from lesser omentum: An elderly from Malaysia with an unusual huge painful intra-abdominal mass

Ng CS, Luqman M, Wong ZQ, Ngiu CS, Raja Affendi RA

J Gastroenterol Hepatol, 2017 Oct;32(10):1664.
PMID: 28948703 DOI: 10.1111/jgh.13721
Matched MeSH terms: Solitary Fibrous Tumors/complications; Solitary Fibrous Tumors/pathology; Solitary Fibrous Tumors/surgery*
Primary solitary fibrous tumour of the prostate: A case report and literature review

Okubo Y, Nukada S, Shibata Y, Osaka K, Yoshioka E, Suzuki M, et al.

Malays J Pathol, 2020 Dec;42(3):449-453.
PMID: 33361728

INTRODUCTION: Solitary fibrous tumour (SFT) is a rare mesenchymal tumour with intermediate malignant potential. Although this tumour arises in several sites, prostatic SFT is an extremely rare neoplasm and may prove confusing owing to the lack of clinical experience because of tumour rarity. The diagnosis may be further difficult because SFTs can manifest positive immunoreactivity for CD34 and progesterone receptor, which are known markers of prostatic stromal tumours. Herein, we describe a case of prostatic SFT that was difficult to differentiate from a prostatic stromal tumour of uncertain malignant potential because of positive immunoreactivity to CD34 and progesterone receptor.
CASE REPORT: A 40-year-old Japanese man presented with lower abdominal pain. Computed tomography revealed a prostatic mass; furthermore, prostate core needle biopsy revealed proliferating bland spindle cells, without necrosis or prominent mitoses. Tumour cells were positive for CD34 and progesterone receptor on immunohistochemical analysis; thus, a prostatic stromal tumour of uncertain malignant potential was initially suspected. However, as the tumour cells showed positive immunoreactivity for STAT6, the final diagnosis was an SFT of the prostate. The patient underwent tumour resection, and at the 6-month postoperative follow-up, neither local recurrence nor distant metastasis occurred.
CONCLUSION: For an accurate diagnosis of an SFT of the prostate, STAT6 immunohistochemistry should be conducted for all mesenchymal tumours of the prostate. When STAT6 immunohistochemical analysis is unfeasible, pathologists should be aware that the morphological and immunohistochemical characteristics of SFT variable from case to case and diagnose with combined analysis of several immunohistochemical markers.

Matched MeSH terms: Solitary Fibrous Tumors/diagnosis*; Solitary Fibrous Tumors/pathology*
Fulltext A rare case of recurrent orbital solitary fibrous tumour with intracranial extension

Ainal Adlin N, Umi Kalthum MN, Amizatul Aini S, Reena Rahayu MZ

Journal of Surgical Academia, 2016;6(1):59-61.
MyJurnal

A 47-year-old lady, presented with progressive proptosis of left eye with deterioration of vision. She had a history of left solitary fibrous tumour and had undergone left frontal craniotomy and orbitotomy in 2004. Surveillance Magnetic resonance imaging (MRI) six years later showed tumour recurrence with intracranial extension. However, she did not follow-up and only presented again 3 years, later. Tumour resection and left exenteration was performed. Histology showed ‘patternless’ pattern of neoplastic cells, and CD34 staining was diffusely positive. Diagnosis of recurrent solitary fibrous tumour with intracranial extension was made.

Matched MeSH terms: Solitary Fibrous Tumors
Fulltext Solitary fibrous tumor of the paranasal sinus presenting as an antrochoanal polyp

Mansharan Kaur Chainchel Singh

Malaysian Journal of Medical Research, 2018;2(2):91-94.
MyJurnal

Solitary fibrous tumours (SFTs) are unusual mesenchymal tumours that were first described as primary spindle-cell neoplasms of the pleura. These tumours have been described in many other locations, including the urogenital system, orbit, mediastinum, and upper respiratory tract. These tumours are generally benign in nature, however some of them can be locally invasive and have the potential to be malignant. Although about 12%-15% of them occur in the head and neck area, SFT of the nasal cavity and paranasal sinuses are extremely rare. We present a case of a solitary fibrous tumour arising from the right maxillary sinus in a 50 year old Chinese man.

Matched MeSH terms: Solitary Fibrous Tumors
Fulltext Solitary fibrous tumour of the submandibular region: a rare entity

Noor Liza Ishak, Primuharsa Putra Sabir Athar Husin, Suria Hayati Md Pauzi, Isa Mohd Rose, Mohd Razif Mohamad Yunus

Malaysian Journal of Medicine and Health Sciences, 2016;12(2):53-55.
MyJurnal

Solitary fibrous tumours of the head and neck region are
extremely rare. The clinical diagnosis is often difficult to
establish, and this lesion may be indistinguishable from other
soft tissue neoplasms. An 18-year old Chinese gentleman
presented with a painless right submandibular swelling which
was increasing in size for eight months. A computed
tomography scan showed a well-defined solid mass measuring
about 2.0 x 2.96 cm in the submandibular region. The tumour
was resected and was confined within its capsule.
Immunohistochemical staining was strongly positive for CD34,
CD 99, and vimentin and negative for desmin, smooth muscle
actin (SMA), cytokeratin, S100 and CD68. The microscopic and
immunohistochemical profile were compatible with solitary
fibrous tumour. Distinguishing solitary fibrous tumours from
various spindle neoplasms can be difficult. In view of the
resemblance, immunohistochemical staining can help
differentiate solitary fibrous tumour from spindle neoplasm.

Matched MeSH terms: Solitary Fibrous Tumors
Fulltext A Clinicopathologic Study of Seven Cases of Orbital Solitary Fibrous Tumours

Ting XW, Sothiraghagan S, W Md Kasim WM, Muhammed J

Cureus, 2020 May 24;12(5):e8259.
PMID: 32596077 DOI: 10.7759/cureus.8259

Objective To describe the patient demographics, clinical findings, investigations, surgical outcomes, and histopathological findings of seven cases of orbital solitary fibrous tumours. Method This was a retrospective review of seven cases of orbital solitary fibrous tumour, which were followed up in Hospital Serdang, a national oculoplastic centre, from years 2008-2017. Results This study included seven patients with ages between 21 and 35 years old; two were males and five were females. All seven patients presented with painless chronic unilateral proptosis. Radiological imaging of the orbit showed a localized contrast enhancing intraorbital mass. All patients underwent orbitotomy and excisional biopsy. Intraoperative findings showed a well-encapsulated and vascularized mass. Histological findings of spindle-shaped cells were noted. All cases had positive staining for cluster of differentiation (CD) 34, five were positive for CD 99, four were positive for B-cell lymphoma (BCL-2), and five patients had positive staining for S-100. Three of the patients did not have clear margins during the primary operation and subsequently had a recurrence within two years. Conclusion A solitary fibrous tumour is a rare mesenchymal tumour with a pleural origin. The orbit is the most common extrapleural site of the tumour and they are usually benign. Immunohistochemistry is important to differentiate it from other, more aggressive forms of orbital tumours. Regular follow-up is important to monitor for recurrence.

Matched MeSH terms: Solitary Fibrous Tumors