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      Tumour Emboli Causing Multifocal Ischemic Stroke from Intracardiac Malignant Solitary Fibrous Tumour

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      Canadian Journal of General Internal Medicine
      Dougmar Publishing Group, Inc.

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          A 78-year-old woman presented to the emergency department with gait ataxia and diplopia. Her past medical history included the surgical resection of a phyllodes breast tumour 8 years prior, with no known recurrence. A computed tomography (CT) scan of the brain demonstrated multifocal right supratentorial hemispheric subacute infarcts in the frontoparietal, posterior temporal and occipital regions. The patient developed recurrent generalized seizures in hospital. Transesophageal echocardiogram demonstrated a large 2.7 × 1.8 × 0.8 cm mobile echogenic mass attached to the left posterior atrial wall. CT angiogram of the chest revealed the left atrial mass as well as a mass encasing the right bronchus intermedius. The patient opted for comfort care and passed away in hospital. Autopsy revealed the tumour to be a primary cardiac solitary fibrous tumour. We present a case of multifocal ischemic stroke and seizures secondary to tumor emboli originating from intracardiac solitary fibrous tumour.

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          Clinicopathologic correlates of solitary fibrous tumors.

          Solitary fibrous tumors (SFTs) are rare fibrous neoplasms. Since their initial description as arising from the pleura, SFTs have been reported at a wide range of anatomic sites. To the authors's knowledge, there are no large series reporting both thoracic and extrathoracic SFTs nor are there any large series that analyze clinicopathologic correlates of tumor behavior. Institutional soft tissue tumor and pathology databases were reviewed to identify patients. Pathologic material was reviewed by an experienced soft tissue pathologist and scored for the presence of a histologically malignant component. Clinical information was obtained from medical records and phone calls to patients. Statistical analysis was performed using the Student t test, Pearson chi-square test, and log-rank test. Seventy-nine patients with SFTs treated at a single institution over an 18-year period were identified. These tumors arose in a wide range of anatomic sites. Thoracic and extrathoracic SFTs had similar clinical and pathologic features, although extrathoracic tumors were more likely to be symptomatic on diagnosis. Seventy-five patients underwent surgical excision of a SFT at our institution. Overall, SFTs had a low rate of local recurrence and metastasis after surgical treatment. Extrathoracic SFTs had an increased risk of local recurrence that was small but statistically significant. There was no difference in metastasis-free survival between thoracic and extrathoracic SFTs. Positive surgical margins and the presence of a histologically malignant component were factors predicting worse local recurrence-free survival. Positive surgical margins, tumor size greater than 10 cm, and the presence of a malignant component predicted worse metastasis-free survival. Solitary fibrous tumors are rare tumors that occur at all anatomic sites. Most SFT patients fare well after surgical treatment. Closer surveillance is warranted for those tumors that are larger than 10 cm or with the presence of a histologically malignant component. Copyright 2002 American Cancer Society. DOI 10.1002/cncr.10328
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            Primary and secondary neoplasms of the heart.

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              Malignant solitary fibrous tumor: cytopathologic findings and differential diagnosis.

              Malignant solitary fibrous tumors (SFTs) are extremely uncommon and poorly understood mesenchymal neoplasms. There are only rare published accounts of the cytopathologic features of these tumors, prompting the current study. All cases of malignant SFT with preoperative fine-needle aspirations (FNAs) from 1999 to 2008 were retrieved from the archives of 3 large teaching hospitals. FNA smears and cell block material including immunoperoxidase stains were reviewed, and the cytologic characteristics were described. Thirteen cases of malignant SFT were identified in 11 patients. Mean age was 58 years, with a men:women ratio of 1:2.6. The tumors were generally large, with a mean size of 13.4 cm. Cytomorphologic features included mostly hypercellular smears with tissue fragments of monotonous, plump spindled cells with blunt-ended and indented nuclei and fragile, wispy cytoplasm. Also seen were bare nuclei, occasional mitoses, and rare necrosis. Some cases showed a predominance of epithelioid cells, whereas others displayed a loose myxomatous matrix. There was a general lack of single cells. None of the cases was diagnosed accurately as malignant SFT on FNA, and only 6 cases were called malignant or suspicious for malignancy. The FNA diagnosis of malignant SFT is extremely difficult and needs histologic material for accurate interpretation. Predominant FNA diagnoses were SFT or spindle cell neoplasm. Malignant SFT must be included in the differential diagnosis of a spindle cell neoplasm of any anatomic site, particularly if it displays features not typical of benign SFT. Immunoperoxidase staining has some utility, mainly in ruling out other neoplasms in the differential diagnosis. (c) 2010 American Cancer Society.

                Author and article information

                Canadian Journal of General Internal Medicine
                Can Journ Gen Int Med
                Dougmar Publishing Group, Inc.
                November 13 2018
                October 10 2018
                : 13
                : 4
                : e28-e31
                © 2018

                Copyright of articles published in all DPG titles is retained by the author. The author grants DPG the rights to publish the article and identify itself as the original publisher. The author grants DPG exclusive commercial rights to the article. The author grants any non-commercial third party the rights to use the article freely provided original author(s) and citation details are cited. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc/4.0/

                General medicine,Geriatric medicine,Neurology,Internal medicine
                General medicine, Geriatric medicine, Neurology, Internal medicine


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