Biomedical subjects
Publications and source records attributed to J C Solacroup.
Three cases of extraosseous Ewing sarcoma are reported. This pathology of the young adult is very rare as shown by the review of the literature. Clinical or imaging (CT or MRI) findings are non-specific and diagnosis is based on histology. Nonetheless, this diagnosis should be considered in all patients with primary soft tissue tumors.
We present a case of symptomatic pneumatocyst of the ilium observed in a professional scuba diver exposed to pressure variations. Pneumatocysts are rare and except for one case reported in a clavicular localization, are always found in subchondral bone of the iliac or sacral side of the sacroiliac joint. Undoubtedly, air fills an intraosseous node. We report here the first case of efficient treatment achieved by filling the cyst via percutaneous access under scopic control.
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A case of an upper oesophageal duplication in a 44 year old man was reported. Dysphagia was the only clinical signs and further examinations CT Scan, MRI performed for diagnosis. Surgical treatment (thoracotomy) was performed and postoperative complication was underlined. Cysts with oesophageal structure are unusual anomaly and surgery is difficult and dangerous.
Out of 137 cases concerning the spine and spine cord, the authors demonstrate that MRI is nowadays fully integrated in urgency investigations. In all cord compression suspicions and in spine trauma investigations, it's place is found. Coil and software improvements allow to put CT and MR scanning delays on a line. This study underlines the necessity of being equipped with non magnetic life support systems allowing management of very fragile patients. In traumas, MR provides the lesion's authentification, it's type, it's unique localisation or not, and therefore an early functional prognosis. The discovery of spine cord involving lesions in neoplastic conditions allows to follow a therapeutic strateging for maintaining the motor function. In the end, the authors discuss about practical utility of MR in scuba diving decompression accidents. No lesion of the spine cord has been demonstrated in 25 patients, probably because of technical insufficiency.
Authors study retrospectively 81 cases of isolated recent (less than three months) knee traumas. These include clinical aspects, NMR, arthroscopy. Clinical examinations have been graded: 1. possible lesion; 2. likely lesions; 3. confirmed lesions. Clinical examinations and NMR results are compared to arthroscopy considered as reference. Clinical examination of acute traumatic knee is essential. Nevertheless, its value for detecting precise lesions is poor, except for knee locking well correlated with meniscal tears. Results show that NMR provide better results than clinical examination. NMR is reliable for detecting tears of posterior cruciate ligament, tears of posterior horn of menisci (sensibility: 93%; specificity: 80%). Its results are less effective for appreciation of lesion of anterior cruciate ligament (sensibility: 88%; specificity: 78%) because of partial tears and functional but not morphologic damage. It is the only method able to evidence osteochondral injuries and soft-tissues associated lesions in traumatic knees. Emergency NMR scans show results no differences in results compared with routine examinations. However, one should keep in mind that negative NMR cannot exclude small cartilaginous lesions and partial tears of anterior cruciate ligament. According to these results and the known qualities of NMR (non invasive), we propose that this type of investigation should be more largely included in diagnostic attitude for acute injured knee. Emergency diagnostic arthroscopy could be efficiently replaced by NMR knee examination.
Often mentioned and not much documented, the lipoblastic meningioma is an unusual extra-axial benign tumor. It has spontaneously hypodensity in CT and appears with a high signal in MRI in T1-weighted sequence. Its vascularisation is rich and shows a strong contrast intake. Its resection is known as easy and its prognosis is excellent. The authors report here the observation of a 65 year old women having a lipoblastic meningioma. Literature is gone through and differential diagnoses are considered.
Authors study retrospectively 81 cases of isolated recent (less than three months) knee traumas. These include clinical aspects, NMR, arthroscopy. Clinical examinations have been graded: 1. possible lesion; 2. likely lesions; 3. confirmed lesions. Clinical examinations and NMR results are compared to arthroscopy considered as reference. Clinical examination of acute traumatic knee is essential. Nevertheless, its value for detecting precise lesions is poor, except for knee locking well correlated with meniscal tears. Results show that NMR provide better results than clinical examination. NMR is reliable for detecting tears of posterior cruciate ligament, tears of posterior horn of menisci (sensibility: 93%; specificity: 80%). Its results are less effective for appreciation of lesion of anterior cruciate ligament (sensibility: 88%; specificity: 78%) because of partial tears and functional but not morphologic damage. It is the only method able to evidence osteochondral injuries and soft-tissues associated lesions in traumatic knees. Emergency NMR scans show results no differences in results compared with routine examinations. However, one should keep in mind that negative NMR cannot exclude small cartilaginous lesions and partial tears of anterior cruciate ligament. According to these results and the known qualities of NMR (non invasive), we propose that this type of investigation should be more largely included in diagnostic attitude for acute injured knee. Emergency diagnostic arthroscopy could be efficiently replaced by NMR knee examination.
A case of spinal extramedullary cysticercosis with location in basal cisterns is reported. It was revealed by a severe sciatalgia and studied with MR imaging which is precious for the diagnosis and the follow-up. Cerebral cisternal arachnoiditis is the main problem in this racemose form where long medical treatment is necessary.
A case of an adult intussusception secondary to a fibroid polyp of the terminal ileum is reported. Adult intussusceptions are observed rarely, usually caused by an organic lesion. The preoperative diagnosis is based on US patterns, target aspect and sandwich sign.
Fat is a fundamental contrast agent in pelvic imaging. The features of fat are typical on CT and MRI but vary on ultrasonography according to the physical characteristics and histology. The study of pelvic fat is of great importance in pelvic exploration because fat outlines both the normal structures and their borders. Involvement or masking of the pelvic fat is a good marker of carcinologic spread. Changes in pelvic fat may also be observe in inflammatory diseases. Specific diseases of fatty pelvic connective tissue such as lipomatosis and liposarcomas, are classically described. Teratomas with a fatty component derived from pelvic structures (ovaries) are easily diagnosed using imaging methods.
On the basis of a series including 185 files on diving accidents gathered between 1981 and 1988, the authors carry out a radiological study of the thoracic signs observed after drowning and lung overpressure. The typical radiological form and the various clinical forms of drowning and lung overpressure are described in this article. Emergency plain thoracic radiography in bed in the method of choice. However, the existence of many false-negative findings leads to proposing a study with computed tomography (CT) after initial treatment in order to better assess the lesions and to characterize the accident. The utility of radiology is also demonstrated for the follow-up of evolution. Lastly, the authors lay stress on the necessity to prevent such accidents, to which radiologists can contribute by detecting thoracic lesions (dystrophy and other evolutive lesions) for which diving is contraindicated.
An echographic study of the fetal normal kidney in 274 fetuses (548 kidneys measured) from 15 to 40 weeks of pregnancy is proposed by the authors. This work includes morphologic and biometric study with the growth curves of 4 parameters. It is shown that both kidneys are morphologically similar and their growth is continuous and there is a constant ratio between the different parameters. Ratios are established: Length/BPD = 0,45 +/- 10%, Width/BPD = 0,27 +/- 10%, Thickness/BPD = 0,26 +/- 10% which are very useful for the echographist. One hopes that with morphologic and biometric criteria of normality, the early detection of urinary tract malformations will be easier.