Lipomatous haemangiopericytoma (fat-forming solitary fibrous tumour) involving the perineum: CT and MRI findings and pathological correlation

Kim, M Y; Rha, Sung Eun; Oh, Shiaki; Lee, Y J; Byun, Joonho; Jung, Chan Kwon; Kang, Wang

doi:10.1259/bjr/26727658

Cited by 12 publications

(10 citation statements)

References 4 publications

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“…Fat-forming variant of SFT originating from the pleura has not been reported in the English literature to date. Therefore, the first case of fat-forming variant of SFT of the pleura is reported here 2,3,5 .…”

Section: Introductionmentioning

confidence: 81%

“…Therefore, the L-HPC was regarded as a subgroup of SFT 6,7 . In addition, the L-HPC was classified as a variant of the SFT by the newly established WHO classification of soft-tissue tumors 2,3,[5][6][7][8][9] . Among the 41 cases, the age of the patients ranged from 27 to 75 years (average 50 years).…”

Section: Discussionmentioning

confidence: 99%

“…In South Korea, only two cases of fat-forming variant of SFT or L-HPC have been reported. They were located in the nasal cavity and perineum 2,3 . Unlike other variants of SFT, fat-forming variant of SFT occur predominantly in the deep soft tissue of the lower extremities rather than the pleura 4 .…”

Section: Introductionmentioning

confidence: 99%

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A Rare Case of Fat-Forming Variant of Solitary Fibrous Tumor Presenting as a Pleural Mass

et al. 2011

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The fat-forming variant of solitary fibrous tumors (SFTs) is a rare soft tissue neoplasm that was previously referred to as a lipomatous hemangiopericytoma (L-HPC). The most common affected site is deep soft tissue. Here, we present the first case, worldwide, of a fat-forming variant of SFT of the pleura. A 74-year-old man presented with left lower chest pain. Chest radiographs showed a mass-like lesion at the left lower lung field and chest computed tomography revealed a 12 cm fat-containing enhancing mass that was well-separated, lobulated and inhomogeneous. Radiology findings suggested a liposarcoma. Percutaneous needle biopsy was performed and pathological diagnosis of the mass was a fat-forming variant of SFT. Surgical resection was carried out and there has been no recurrence to date. So, a benign fat-forming variant of SFT must be considered as one of the differential diagnoses of lipomatous tumors of the pleura.

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Section: Introductionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

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A Rare Case of Fat-Forming Variant of Solitary Fibrous Tumor Presenting as a Pleural Mass

et al. 2011

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“…To the best of our knowledge, only 50 such cases have been reported in the English medical literature [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The fat-forming variant of SFT has shown a wide anatomical distribution, but the commonly affected sites are the lower extremities and retroperitoneum.…”

Section: Discussionmentioning

confidence: 99%

“…There are no previous reports of a fat-forming variant of SFT arising from the pleura. To date, there have been only eight case reports describing the CT or MRI findings of the fatforming variant of SFT and these cases involved the perineum [8], spine [9], kidney [10], orbit [11], skull base [12], neck [13], thoracic wall [14] and pelvic cavity [14]. In these reports, except for one case involving the spine in which the post-contrast images were not obtained, all the tumours showed similar radiological findings of a well defined and enhanced hypervascular mass.…”

Section: Discussionmentioning

confidence: 99%

Fat-forming variant of solitary fibrous tumour of the pleura: CT findings

Park

Rho²,

Yoo³

et al. 2011

BJR

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ABSTRACT. The fat-forming variant of solitary fibrous tumour (SFT) was previously called lipomatous haemangiopericytoma and is a rare variant of solitary fibrous tumour. It predominantly occurs in the deep soft tissues of the retroperitoneum and thigh. Only a handful of cases involving the perineum, spine, thoracic wall and pelvic cavity have been reported in the radiological literature and the fat-forming variant of SFT involving the pleura has not been previously reported. Herein, we report the CT findings of a case of the fat-forming variant of SFT involving the pleura that was treated by excision. Chest CT showed a large lobulated heterogeneous fatty mass with a multifocal enhancing soft-tissue component in the left lower hemithorax. Although rare, the fat-forming variant of SFT of the pleura should be added to the differential diagnosis of fat-containing pleural soft-tissue tumours. . These reports focused on characterising the clinicopathological features. To the best of our knowledge, the radiological features of this tumour have not been well described. Therefore, we report the CT findings of a 74-year-old man with a fatforming variant of SFT involving the pleura that was treated by excision. Case reportA 74-year-old man was admitted with aggravated dyspnoea that had developed over the previous year. No abnormalities were noted on the physical examination or routine laboratory studies.The posteroanterior chest radiograph showed a large left lower hemithoracic mass that was abutted against the diaphragm. Contrast-enhanced chest CT (Sensation 16; Siemens Medical Solutions, Forchheim, Germany) showed a large heterogeneous predominant fatty mass ( Figure 1a) that was attached posteroinferiorly to the mediastinum, pleura and diaphragm. Adjacent structures such as the oesophagus, pulmonary vessels and bronchi were compressed and displaced but not clearly infiltrated. The mass was well circumscribed and lobulated (12613613 cm) and was largely composed of fat and a significantly sized, well-enhancing soft-tissue component (Figure 1b, c). It was difficult to determine the origin of the mass, but we thought that it was of pleural rather than mediastinal origin because the mass was extensively attached to the diaphragm and pleura. The initial clinicoradiological diagnosis was liposarcoma that originated from the pleura.We performed a CT-guided percutaneous transthoracic needle biopsy to make an initial diagnosis because we had no experience with large predominant fatty liposarcomas of the pleura and could not completely rule out the presence of another rare benign fatty pleural tumour. Microscopically, the tumour was a mesenchymal neoplasm with spindle cells, a mature fat component and collagenous stroma. Immunohistochemistry showed positivity for CD34 and CD99, as is typical for SFT, whereas the S-100 and smooth muscle actin were negative.Surgical excision of the mass was subsequently performed. At surgery, the tumour was found to originate from the pleura. The gross specimen consisted of fragments of solid soft m...

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Fat-forming solitary fibrous tumour (lipomatous haemangiopericytoma) of the spine: case report and literature review

et al. 2010

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Solitary fibrous tumour (SFT) is a rare soft tissue tumour of uncertain histogenesis and unpredictable biological behaviour, which was first described in the pleura and subsequently in many extra-pleural locations. Fat-forming SFT is a sub-type of SFT and only a handful of cases have been reported in the literature. We present the clinical, radiological and histological features of a case of intraspinal fat-forming SFT, along with a literature review. This is the first known report of a fat-forming SFT in the spine.

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Lipomatous haemangiopericytoma (fat-forming solitary fibrous tumour) involving the perineum: CT and MRI findings and pathological correlation

Cited by 12 publications

References 4 publications

A Rare Case of Fat-Forming Variant of Solitary Fibrous Tumor Presenting as a Pleural Mass

A Rare Case of Fat-Forming Variant of Solitary Fibrous Tumor Presenting as a Pleural Mass

Fat-forming variant of solitary fibrous tumour of the pleura: CT findings

Fat-forming solitary fibrous tumour (lipomatous haemangiopericytoma) of the spine: case report and literature review

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