Pediatric orbital schwannoma originating from the oculomotor nerve

2012 ◽  
Vol 9 (2) ◽  
pp. 165-168 ◽  
Author(s):  
Hiroaki Nagashima ◽  
Kazuki Yamamoto ◽  
Atsufumi Kawamura ◽  
Tatsuya Nagashima ◽  
Koji Nomura ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Mr Imaging ◽  
Oculomotor Nerve ◽  
Pathological Diagnosis ◽  
Rare Tumor ◽  
Orbital Tumors ◽  
Computed Tomography Scanning ◽  
Transcranial Approach ◽  
The Right ◽  
Tomography Scanning

Intraorbital schwannoma is a rare tumor that constitutes approximately 1%–8% of all orbital tumors. The authors report a case of orbital schwannoma in a 5-year-old boy who was admitted to their institute with exophthalmos and ptosis of the right eye. Computed tomography scanning and MR imaging revealed a retroocular mass in the right orbit. The tumor was successfully removed via a transcranial approach. The pathological diagnosis was schwannoma that appeared to originate from the superior branch of the oculomotor nerve. Despite the rarity of these intraorbital extraocular tumors in children, schwannomas should be differentiated from other intraorbital tumors.

Spontaneous Regression of a Mandibular Plasmacytoma in a Juvenile Dog: A Case Report

2020 ◽  
Vol 56 (3) ◽  
Author(s):  
Erika Villedieu ◽  
Samuel Beck ◽  
Laurent Findji
Keyword(s):  
Computed Tomography ◽  
Spontaneous Regression ◽  
Round Cell ◽  
Computed Tomography Scan ◽  
Computed Tomography Scanning ◽  
Cell Neoplasm ◽  
Poorly Differentiated ◽  
The Right ◽  
Tomography Scan ◽  
Tomography Scanning

ABSTRACT A 4 mo old female Finnish lapphund presented for further investigation of a swelling of the right rostral mandible. A computed tomography scan showed the swelling to be an expansile and osteolytic mandibular lesion. Histopathology revealed a poorly differentiated, moderately well-demarcated, unencapsulated, highly infiltrative round cell neoplasm, and immunohistochemistry was supportive of a plasmacytoma. Performance of a rostral partial mandibulectomy was initially discussed with the owners, but the lesion improved spontaneously both clinically and on repeated computed tomography scanning before surgery could be performed. It subsequently almost completely resolved 6 mo after diagnosis. Hypotheses for spontaneous regression of the lesion are discussed and the human literature is briefly reviewed.

scholarly journals Migrating Pericardial Cyst Mimicking a Pleural Pseudotumor

2020 ◽  
Vol 10 ◽  
pp. 32
Author(s):  
Christine J. Ha ◽  
Pierre D. Maldjian
Keyword(s):  
Computed Tomography ◽  
Supine Position ◽  
Atypical Presentation ◽  
Pericardial Cyst ◽  
Computed Tomography Scanning ◽  
Left Lateral Decubitus Position ◽  
Lateral Decubitus ◽  
The Right ◽  
Oblique Fissure ◽  
Tomography Scanning

We discuss an atypical presentation of a pericardial cyst appearing as a mobile lesion extending into and out of the right pulmonary major fissure. With the patient in the supine position, the cyst mimicked a pleural pseudotumor along the right oblique fissure. In the left lateral decubitus position, the cyst migrated to the right cardiophrenic angle and assumed an appearance more characteristic of a pericardial cyst. At surgery, a stalk was discovered attaching the cyst to the pericardium explaining its migrating nature. We conclude that computed tomography scanning in the decubitus position is useful for differentiating a mobile pericardial cyst from a pleural pseudotumor.

scholarly journals Triple-Rule-Out Computed Tomography Scanning for the Diagnosis of a Mediastinal Tumor

2019 ◽  
Vol 08 (01) ◽  
pp. e30-e32
Author(s):  
Dritan Useini ◽  
Zulfugar Taghiyev ◽  
Matthias Bechtel ◽  
Justus Strauch
Keyword(s):  
Computed Tomography ◽  
Internal Thoracic Artery ◽  
Anterior Mediastinum ◽  
Radiologic Diagnosis ◽  
Computed Tomography Scanning ◽  
Triple Rule Out ◽  
The Right ◽  
Tomography Scan ◽  
Tomography Scanning ◽  
Rule Out

AbstractThymomas are rare tumors that commonly lie in the anterior mediastinum. The arteries supplying thymomas branch from the internal thoracic arteries and their collaterals. This report presents a patient with huge mediastinal thymoma, whose sensational vascularization is ensured directly by a single dominant tributary branch of the left internal thoracic artery. After initially performed computed tomography angiography, the tumor was suspect to be vascularized from the right coronary artery. Triple-rule-out computed tomography scan was a key step for accurate radiologic diagnosis.

Congenital Common Cavity Deformity of Frontal, Ethmoid, and Sphenoid Sinuses

2003 ◽  
Vol 40 (6) ◽  
pp. 639-641 ◽  
Author(s):  
Mustafa Tasar ◽  
Sertac Yetiser ◽  
Mutlu Saglam ◽  
Aysın Tasar
Keyword(s):  
Computed Tomography ◽  
Visual Field ◽  
English Literature ◽  
Adolescent Patient ◽  
Computed Tomography Scanning ◽  
History Of ◽  
The Right ◽  
Common Cavity ◽  
Tomography Scanning ◽  
Sphenoid Sinuses

Objective To present a 17-year-old adolescent patient with lost right eye visual field and intermittent headache since the age of 14 years. The cranium was prominent at the right frontal region. The patient had no history of head trauma or infection and his past medical story was unremarkable. His mental status was normal. Computed tomography scanning revealed an abnormal occurrence of a common cavity deformity of the frontal, ethmoid, and sphenoid sinuses. No other lesions or deformities were present. Such common cavity deformity of these paranasal sinuses has not previously been reported in the English literature.

When prey becomes killer: does a double lethal attack on a blue shark reveal a precise defensive strategy in young swordfish?

2020 ◽  
Vol 100 (5) ◽  
pp. 831-836 ◽  
Author(s):  
Teresa Romeo ◽  
Pietro Battaglia ◽  
Domenico Macaluso ◽  
Giuseppe Tagliavia ◽  
Teresa Manuela Vicchio ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Mediterranean Sea ◽  
Rare Case ◽  
Defensive Strategy ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Strait Of Sicily ◽  
Computed Tomography Scanning ◽  
The Right ◽  
Tomography Scanning

AbstractIn this paper a rare case of a double swordfish mortal attack against an adult blue shark (Prionace glauca) is reported. A female blue shark, with a total length of 3 m, was found stranded along the southern Sicilian coast (Strait of Sicily, Mediterranean Sea) on 30 May 2018. The analysis of this carcass revealed the presence of two swordfish bill fragments, impaled in the shark head; the former on the snout, the latter near the eye. The results of anatomical and computed tomography scanning analysis on the head of the blue shark showed that the larger bill fragment (19.7 cm) probably determined the death of this animal, having been impaled in a vital point, just behind the right eye. The analysis of both these events and other similar swordfish-shark interactions reported in the literature makes possible the hypothesis that young swordfish specimens put in place a precise defensive strategy against their potential predators or competitors, aimed at hitting vulnerable and vital points and delivering a mortal blow.

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