[Aneurysmal cyst of ethmoid bone: a case report]. / Le kyste osseux anévrismal de l'ethmoïde : à propos d'un cas.

AIM: To report on the value of imaging in the diagnosis and assessment of aneurysmal cyst of the ethmoid bone. CASE: A 12-year-old girl with a stuffy nose, revealing an aneurysmal bone cyst of the ethmoid, explored by CT, MRI, who had a preoperative arteriography with embolization. CONCLUSION: Aneurysmal bone cyst is a benign bone lesion which rarely involves the facial bones. Imaging plays an important role in the diagnostic approach, the assessment of the lesions, and the treatment using the techniques of interventional radiology.

A rare localization of meningioma: meningioma of the foramen of Monro.

Intraventricular meningiomas (IVM) are rare tumors, constituting only 0.5 to 2% of all intracranial meningiomas, and meningiomas localized within the foramen of Monro are exceptional, with only a very few cases reported in the literature. We report the case of a 41-year-old man, admitted to our department for headaches. MRI found a mass tissular well enhanced after gadolinium injection, arising in the region of the foramens of Monro, and extended to the lateral and the third ventricles. Histological examination revealed a meningioma.

[Primary hydatid cyst of the parotid gland]. / Kyste hydatique parotidien primitif.

INTRODUCTION: The hydatid cyst is an anthropozoonosis due to the development of the Echinococcus granulosus tapeworm larva in humans. Its intraparotid localization is extremely rare. CLINICAL CASE: A 10-year-old-male patient was admitted for an isolated renitent swelling of the left parotid region having grown for several months. Cervical ultrasonography revealed a left parotid cystic mass, characterized by a double wall, and a small daughter cyst. The CT-scan typically showed the absence of enhancement after iodine contrast medium injection. The imaging-based diagnosis of a hydatid cyst was supported by positive hydatid serology, and confirmed by histological analysis of the cyst. No other hydatid location was found (chest and abdominal). DISCUSSION: In spite of its rarity, hydatid cyst can be a diagnosis in case of parotid cystic masses. Ultrasonography is the first examination to be performed; it must be completed by CT-scan or even better by MRI. Once the diagnosis of hydatid cyst is confirmed, a chest radiograph and an abdominal ultrasonography should be performed, to screen for other localizations. Surgical resection is the gold standard treatment.

[Os odontoideum: clinical and radiological aspects]. / Os odontoïdeum : aspects cliniques et radiologiques.

Few reports of os odontoideum have been made. We report two cases where this affection was revealed by cervical pain and hemiparesis in one case and acute tetraparesis in the other. Patients with os odontoideum usually present with neurological signs, but some have only cervical pain and some others remain asymptomatic. Radiological exams, including radiograms, cervical scanner and MRI lead to the diagnosis. Different surgical treatment can be proposed to symptomatic patients. Prophylactic surgical treatment is not indicated.

[Hemoptysis revealing a pulmonary arterial aneurysm on Behçet disease in children: role of computed tomography]. / Hémoptysie révélant un anévrysme artériel pulmonaire sur maladie de Behçet chez un enfant: rôle de la tomodensitométrie.

Behçet's disease is a systemic condition whose discovery during hemoptysis on a pulmonary artery aneurysm is rare, especially in children. Through the case of a 11-year-old boy, the authors emphasize the importance of imaging in diagnosis of this disease, whose progression can be fatal if hemoptysis is violent.

[Neuro-imaging of tuberous sclerosis]. / Neuro-imagerie de la sclérose tubéreuse de Bourneville.

Tuberous sclerosis is a phakomatosis with central nervous system manifestations characterized by 4 lesions detectable on neuro-imaging: tubers, white matter abnormalities, subependymal nodules and subependymal astrocytomas. The first three are benign lesions composed of by identical cytological lesions varying only in size and location. At CT, enhancement of subependymal nodules is usually considered as evidence of transformation to subependymal giant cell astrocytoma. This latter poses the problem of its relative benignity: hydrocephalus source of morbidity or even mortality. From a series of 22 cases, the authors review the characteristics of these abnormalities.

[Glomus tumor of the leg: a case report]. / A propos d'une tumeur glomique de la jambe.

Glomus tumor is an uncommon benign neuromyoarterial tumor. It most frequently involves the fingers, and only rarely involves other sites. The clinical, imaging and therapeutic considerations regarding a glomangioma of the leg in a 65-year-old-man are reviewed.

[Anterior spinal epidural hematoma: a case report]. / Hématome épidural antérieur intrarachidien. A propos d'un cas.

PURPOSE: to present a case of post traumatic anterior spinal epidural hematoma. CASE REPORT: a 55-year-old man presented with abrupt onset of paraparesia following a motor vehicle accident. Magnetic resonance imaging showed an anterior lumbar epidural hematoma. Surgical evacuation of the hematoma resulted in complete recovery.

[Cerebro-costo-mandibular syndrome. A case-report]. / Syndrome cérébrocostomandibulaire. A propos d'un cas.

The cerebro-costo-mandibular syndrome is a rare and serious congenital disorder characterized by the association of posterior rib malformations, micrognatia and mental deficiency. Death due to respiratory failure is usual during the first days or months of life. The various clinical and radiological aspects of this disease are described based on a recent observation.

[Bronchogenic cyst of the tongue: a very rare localization]. / Le kyste bronchogénique de la langue: une localisation très rare.

Bronchogenic cysts are extremely rare in the tongue. We explain this localization by abnormal detachment of accessory lung buds from the primitive foregut. MR is the best imaging modality to evaluate lesions of tongue. Enucleation is the best treatment option. We present and discuss the case of a six month old infant presenting with a congenital tongue mass. This mass was a bronchogenic cyst.

[Metatropic dysplasia: two cases in siblings]. / La dysplasie métatropique : à propos de deux frères.

Metatropic dwarfism is a rare heritable skeletal dysplasia. We report on two brothers, 4-month-old and 9-year-old, affected by the disease. Clinical and radiological features of the disease at different ages are discussed. Prenatal diagnosis is possible by ultrasonography. No treatment is available. Prevention by genetic counselling remains the principal possible assistance to high risk families.