scholarly journals Primary microcystic/reticular schwannoma of the frontal bone: illustrative case

2021 ◽  
Vol 1 (25) ◽  
Author(s):  
Xuemiao Zhao ◽  
Xinmu Zhou ◽  
Xiao Chen ◽  
Junqiao Pan ◽  
Bingrong Li
Keyword(s):  
Soft Tissue Mass ◽  
Three Dimensional ◽  
Bone Destruction ◽  
Frontal Bone ◽  
Illustrative Case ◽  
Imaging Data ◽  
Tissue Mass ◽  
First Case ◽  
Dimensional Reconstruction ◽  
Painless Mass

BACKGROUND To the best of the authors’ knowledge, this is the first case of microcystic/reticular schwannoma arising in the frontal bone. OBSERVATIONS An 18-year-old man presented to the authors’ orthopedic clinic with a complaint of a progressively enlarging, painless mass in the frontal bone. It showed significant hyperintensity on T2-weighted imaging with progressive enhancement. Computed tomography combined with three-dimensional reconstruction showed expansive bone destruction with a soft tissue mass in the left side of the frontal bone, without calcification inside or a sclerotic margin around it. The mass was a microcystic/reticular schwannoma as confirmed by surgical pathology. LESSONS The authors report a rare case of a microcystic/reticular schwannoma arising in the frontal bone, with relatively comprehensive imaging data that enabled them to learn more about this tumor.

Bone imaging—“Cold rib” sign in bone destruction with adjacent soft tissue mass

1988 ◽  
Vol 18 (2) ◽  
pp. 162-164 ◽  
Author(s):  
Renato A. Valdes Olmos ◽  
Menso J. Nubé ◽  
Cees W.J. de Pont
Keyword(s):  
Soft Tissue ◽  
Soft Tissue Mass ◽  
Bone Destruction ◽  
Bone Imaging ◽  
Tissue Mass ◽  
Adjacent Soft Tissue

scholarly journals Adult Intramedullary Ewing Sarcoma of the Proximal Hip

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Preetam Gongidi ◽  
Siva Jasti ◽  
William Rafferty ◽  
Veniamin Barshay ◽  
Richard Lackman
Keyword(s):  
Young Adults ◽  
Soft Tissue ◽  
Ewing Sarcoma ◽  
Soft Tissue Mass ◽  
Periosteal Reaction ◽  
Long Bones ◽  
New Bone Formation ◽  
Tissue Mass ◽  
First Case ◽  
Cortical Erosion

Ewing sarcoma of bone is classically a permeative lesion in the diaphysis of long bones in children. While they occur primarily in children and adolescents, they can be seen in young adults in their 20s, but these are typically seen in flat bones. The permeative nature of the lesion can elicit new bone formation creating a partially sclerotic appearance, cortical expansion presenting as a “Codman triangle,” or have an “onion-skin” type of aggressive periosteal reaction/periostitis. Ewing sarcoma is rarely seen without an associated soft-tissue mass and is even rarer to just have benign-appearing periostitis (e.g., thick, uniform, or wavy cortex). We present such a case of Ewing sarcoma in a young adult confined to just the medullary metadiaphysis without cortical erosion or soft-tissue mass. To the best of our knowledge, this is the first case to be reported in the radiology literature.

Poorly Differentiated Chordomas Showing Loss of INI1/SMARCB1: A Report of 2 Rare Cases With Diagnostic Implications

2018 ◽  
Vol 26 (7) ◽  
pp. 637-643 ◽  
Author(s):  
Bharat Rekhi ◽  
Kemal Kosemehmetoglu ◽  
Swapnil Rane ◽  
Figen Soylemezoglu ◽  
Elif Bulut
Keyword(s):  
Soft Tissue ◽  
Tumor Cells ◽  
Soft Tissue Mass ◽  
Head Movements ◽  
Cervical Region ◽  
Tissue Mass ◽  
First Case ◽  
Radiologic Imaging ◽  
Poorly Differentiated ◽  
Mitotic Figures

Poorly differentiated chordomas are rare musculoskeletal tumors. Case 1. A 42-year-old lady presented with quadriparesis of 2 months’ duration. Radiologic imaging disclosed a soft tissue mass in her left prevertebral- and paravertebral cervical region. Case 2. A 4-year-old male child presented with neck pain and restricted head movements of 1-year duration. Radiologic imaging revealed a contrast enhancing, paraspinal soft tissue mass in his cervical region. Microscopic examination in both the cases revealed a cellular malignant tumor composed of moderate to markedly pleomorphic cells with interspersed mitotic figures, along with focal myxoid change and necrosis. By immunohistochemistry, tumor cells in both cases were diffusely positive for pan cytokeratin (AE1/AE3) and brachyury, whereas these were negative for INI1/SMARCB1. Tumor cells in the second case were also positive for glypican3. The first case developed pulmonary metastasis, while the second case developed recurrence. Poorly differentiated chordomas are uncommon tumors, invariably characterized by loss of INI1. These tumors can be rarely seen in adults and need to be differentiated from their diagnostic mimics, in view of treatment implications and their relatively aggressive clinical outcomes.

scholarly journals Multifocal Head and Neck Neurofibromas with Osseous Abnormalities and Muscular Hypoplasia in a Child with Neurofibromatosis: Type I

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Rachna Rath ◽  
Sheetal Kaur ◽  
Shadab Ali Baig ◽  
Punyashlok Pati ◽  
Sonalisa Sahoo
Keyword(s):  
Soft Tissue Mass ◽  
Three Dimensional ◽  
Neurofibromatosis Type ◽  
Lytic Lesion ◽  
Type I ◽  
Tissue Mass ◽  
Cross Sectional ◽  
Distinct Disease ◽  
Magnetic Resonance Imaging Mri

Neurofibromatosis type 1 (NF1) is a clinically and genetically distinct disease involving both neuroectodermal and mesenchymal derivatives. Orofacial manifestations in NF1 have been documented before but occurrence of multifocal intraosseous (IO) and extraosseous (EO) neurofibromas is rare. The present case highlights the importance of imaging findings in the diagnosis and management of multifocal jaw, infratemporal, and parotid neurofibromas with muscular hypoplasia in an eight-year-old girl with NF1. Apart from orthopantomograms (OPG), three-dimensional computed tomography (3D CT) and cross-sectional reformations were valuable in delineating the extent of the lytic lesion and identifying additional bony deformities of the mandible. Magnetic resonance imaging (MRI) helped to identify the solid nature of the lesion and true extent of the soft tissue mass.

scholarly journals Epithelioid angiosarcoma of the masseter muscle: a rare clinicopathological diagnosis

2020 ◽  
Author(s):  
Anitya Srivastava ◽  
Ruchi Nagpal ◽  
Harshi Dhingra ◽  
Asif Baliyan
Keyword(s):  
Case Report ◽  
Masseter Muscle ◽  
Soft Tissue Mass ◽  
Rare Tumor ◽  
Parotid Tumor ◽  
Superficial Parotidectomy ◽  
Epithelioid Angiosarcoma ◽  
Tissue Mass ◽  
Parotid Region ◽  
First Case

Epithelioid angiosarcoma (EA) is a subtype of angiosarcoma which is a rare tumor of endothelial origin. Here, we report a case of 15-year-old boy who presented with soft tissue mass lesion in the parotid region mimicking as a benign parotid tumor. Cytology was suggestive of inflammatory swelling. Patient underwent superficial parotidectomy along with the wide excision of the swelling. On histopathology, it was diagnosed as EA. To the best of our knowledge this is the first case report of epithelioid angiosarcoma of the masseter.

scholarly journals A case of intra-articular angioleiomyoma of the talocrural joint

Joints ◽  
2016 ◽  
Vol 04 (04) ◽  
pp. 253-255
Author(s):  
Irene Thung ◽  
Sepi Mahooti ◽  
Xiangdong Xu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Smooth Muscle ◽  
Ankle Joint ◽  
Soft Tissue Mass ◽  
Resonance Imaging ◽  
Ankle Pain ◽  
Tissue Mass ◽  
Talocrural Joint ◽  
First Case ◽  
Vascular Channels

Angioleiomyoma is a benign pericytic neoplasm with smooth muscle differentiation. Intra-articular angioleiomyoma is exceptionally rare with only four cases reported, all involving the knee joint. Here we report the first case of intra-articular angioleiomyoma entirely localized within the ankle joint. An 83-year-old male presented with progressively worsening ankle pain. Subsequent magnetic resonance imaging showed a soft tissue mass within the talocrural joint. Histologic examination and ancillary testing demonstrated fascicles of smooth muscle cells and interspersed, often compressed, vascular channels, consistent with an angioleiomyoma. This case highlights the importance of including angioleiomyoma in the differential diagnosis of an ankle joint mass.

Subcutaneous Taenia crassiceps Cysticercosis Mass Excision from an 11-Year-Old Mixed-Breed Dog

2021 ◽  
Vol 57 (5) ◽  
Author(s):  
Christina Murphy ◽  
Logan Kursh ◽  
Thomas Nolan ◽  
James Perry
Keyword(s):  
Soft Tissue ◽  
Soft Tissue Mass ◽  
Ex Vivo ◽  
Tissue Mass ◽  
Cross Sectional ◽  
Taenia Crassiceps ◽  
First Case ◽  
Imaging Characteristics ◽  
Mixed Breed ◽  
Infectious Etiology

ABSTRACT An 11 yr old mixed-breed dog presented with a 2 × 3 cm semimovable subcutaneous soft-tissue mass overlying the right hip region that grew to 8 × 5 cm over a 6 mo period. Two separate fine needle aspiration cytology samples showed marked pyogranulomatous inflammation with no cytologically apparent infectious etiology or neoplasia. Computed tomography imaging revealed a well-marginated, heterogeneous, contrast-enhancing soft-tissue mass extending into the adjacent fat, suggestive of neoplasia. A 14G needle biopsy showed similar chronic inflammatory changes without evidence of neoplasia or infectious etiology. Excisional biopsy of the mass was performed, and ex vivo sectioning revealed Taenia crassiceps cysticerci. Histopathology confirmed severe chronic pyogranulomatous cellulitis and myositis with intralesional cysticerci. Anthelmintic treatment was administered postoperatively, and no evidence of local recurrence has been noted as of 6 mo after the operation. To our knowledge, this is the first case report describing the cytological, histological, cross-sectional imaging characteristics and treatment outcome of T crassiceps cysticercosis in a dog.

scholarly journals The Diagnosis of Iliac Bone Destruction in Children: 22 Cases from Two Centres

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Xiangshui Sun ◽  
Yue Lou ◽  
Xiaodong Wang
Keyword(s):  
Clinical Features ◽  
Eosinophilic Granuloma ◽  
Correct Diagnosis ◽  
Bone Cyst ◽  
Bone Destruction ◽  
Iliac Bone ◽  
Histopathological Diagnosis ◽  
Imaging Features ◽  
Imaging Data ◽  
Tissue Mass

Iliac bone destruction in children is uncommon and presents various imaging features. Correct diagnosis based on clinical and imaging features is difficult. This research aimed to retrospectively explore the clinical features, imaging, and histopathological diagnosis of children with iliac bone destruction. A total of 22 children with iliac bone destruction were enrolled in this retrospective analysis from two children’s hospitals during July 2007 to April 2015. Clinical features, imaging, and histopathological findings were analysed. The mode of iliac bone destruction, lesion structure, and the relationship between the range of soft tissue mass and cortical destruction were determined based on imaging data. The data were analysed using descriptive methods. Of the iliac bone destruction cases, eight cases were neuroblastoma iliac bone metastasis, seven cases were bone eosinophilic granuloma, two cases were Ewing’s sarcoma, two cases were osteomyelitis, one case was bone cyst, one case was bone fibrous dysplasia, and one case was non-Hodgkin’s lymphoma. Iliac bone destruction varies widely in children. Metastatic neuroblastoma and eosinophilic granuloma are the most commonly involved childhood tumours.

scholarly journals Giant cell tumour of the tendon sheath of the spine: clinical features and imaging findings

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Piaoe Zeng ◽  
Annan Zhang ◽  
Le Song ◽  
Jianfang Liu ◽  
Huishu Yuan ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Giant Cell ◽  
Facet Joint ◽  
Giant Cell Tumour ◽  
Soft Tissue Mass ◽  
Bone Destruction ◽  
Tendon Sheath ◽  
Imaging Findings ◽  
Tissue Mass ◽  
Pet Ct

Abstract Objectives To review the clinical and imaging data of spinal giant cell tumour of the tendon sheath (GCTTS) to improve our understanding of the disease. Methods The imaging findings, clinicopathological features and clinical outcomes of 14 patients with pathologically confirmed spinal GCTTS were analysed retrospectively. Results All 14 patients had a single spinal lesion, including ten cervical vertebra lesions and four thoracic vertebra lesions. CT scan findings: The lesions showed osteolytic bone destruction and were centred on the facet joint, eroding the surrounding bone with a paravertebral soft tissue mass. MRI scan findings: all the lesions manifested predominantly as isointense or hypointense on T1-weighted imaging (T1WI). On T2-weighted imaging (T2WI), eight lesions were hypointense, and four were isointense. The remaining two lesions showed slight hyperintensity. The enhanced scans of eight lesions showed moderate to marked homogeneous or heterogeneous enhancement. PET/CT findings: Among the five patients who underwent PET/CT, three presented lesions with well-defined, sclerotic borders, and the uptake of 18F-FDG was markedly increased. One lesion showed an ill-defined border and an uneven increase in 18F-FDG uptake with an SUVmax value of 8.9. A recurrent lesion was only found on PET/CT 45 months after surgery and the SUVmax was 5.1. Conclusions Spinal GCTTS is extremely rare. Osteolytic bone destruction in the area of the facet joint with a soft tissue mass and hypointensity on T2WI images are indicative of the spinal GCTTS. GCTTS shows high uptake of 18F-FDG, and PET/CT is helpful in detecting recurrent lesions.

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