The agreement between magnetic resonance imaging and arthroscopic findings in temporomandibular joint disorders.

The aim of this retrospective observational study was to assess the potential agreement between independent magnetic resonance imaging (MRI) and arthroscopic findings and their respective contributions to a final diagnosis in patients with refractory temporomandibular joint disorders. Two dentomaxillofacial radiologists and two oral and maxillofacial surgeons scored 50 joints. All observers, who were blinded to additional clinical information, used a specific scoring form and selected one or more diagnostic labels. Agreement between MRI and arthroscopy and their contributions to the final diagnosis were assessed as primary outcomes using Fleiss' kappa. Intra-modality agreement and the correlation between signal intensity ratio (SIR) measurements on MRI and synovitis grading on arthroscopy were assessed as secondary outcomes. Agreement between MRI and arthroscopy was poor. A fair level of agreement was only reached for reduction capacity of the disc and disc perforation. Arthroscopic diagnostic labels matched better with the final diagnosis, suggesting a bigger contribution to that diagnosis. Higher SIR measurements correlated with higher synovitis grading scores for the retrodiscal tissue and the posterior band of the disc. Intra-modality agreement was better in arthroscopy. When blinded to clinical information, arthroscopy and MRI observations can lead to different conclusions. The diagnostic outcomes of both examinations should be considered and integrated into a final diagnosis.

Evaluation of the effective dose of cone beam CT and multislice CT for temporomandibular joint examinations at optimized exposure levels.

OBJECTIVES: To compare the effective dose to patients from temporomandibular joint examinations using a dental CBCT device and a multislice CT (MSCT) device, both before and after dose optimization. METHODS: A Promax(®) 3D (Planmeca, Helsinki, Finland) dental CBCT and a LightSpeed VCT(®) (GE Healthcare, Little Chalfont, UK) multislice CT were used. Organ doses and effective doses were estimated from thermoluminescent dosemeters at 61 positions inside an anthropomorphic phantom at the exposure settings in clinical use. Optimized exposure protocols were obtained through an optimization study using a dry skull phantom, where four observers rated image quality taken at different exposure levels. The optimal exposure level was obtained when all included criteria were rated as acceptable or better by all observers. RESULTS: The effective dose from a bilateral examination was 184 µSv for Promax 3D and 113 µSv for LightSpeed VCT before optimization. Post optimization, the bilateral effective dose was 92 µSv for Promax 3D and 124 µSv for LightSpeed VCT. CONCLUSIONS: At optimized exposure levels, the effective dose from CBCT was comparable to MSCT.

Frequent intragenic rearrangements of DPYD in colorectal tumours.

Dihydropyrimidine dehydrogenase is a crucial enzyme for the degradation of 5-fluorouracil (5FU). DPYD, which encodes dihydropyrimidine dehydrogenase, is prone to acquire genomic rearrangements because of the presence of an intragenic fragile site FRA1E. We evaluated DPYD copy number variations (CNVs) in a prospective series of 242 stage I-III colorectal tumours (including 87 patients receiving 5FU-based treatment). CNVs in one or more exons of DPYD were detected in 27% of tumours (deletions or amplifications of one or more DPYD exons observed in 17% and 10% of cases, respectively). A significant relationship was observed between the DPYD intragenic rearrangement status and dihydropyrimidine dehydrogenase (DPD) mRNA levels (both at the tumour level). The presence of somatic DPYD aberrations was not associated with known prognostic or predictive biomarkers, except for LOH of chromosome 8p. No association was observed between DPYD aberrations and patient survival, suggesting that assessment of somatic DPYD intragenic rearrangement status is not a powerful biomarker to predict the outcome of 5FU-based chemotherapy in patients with colorectal cancer.

Osteochondroma of the glenoid fossa--report of two cases with sudden onset of symptoms.

Osteochondroma of the temporomandibular joint is a rare condition that most frequently affects the mandibular condyle. Fixed osteochondroma originating from the glenoid fossa is extremely rare and a literature search identified only two reported cases. The cases of two additional patients in whom osteochondroma developed in the posterior part of the glenoid fossa leading to the sudden onset of chin deviation and malocclusion are reported herein. We conclude that osteochondroma of the glenoid fossa is a slow growing benign tumour with typical clinical and radiological features. It requires surgical treatment, comprising resection of the tumour. Recurrence appears unlikely.

Molecular patterns in deficient mismatch repair colorectal tumours: results from a French prospective multicentric biological and genetic study.

BACKGROUND: To test the prognostic value of tumour protein and genetic markers in colorectal cancer (CRC) and examine whether deficient mismatch repair (dMMR) tumours had a distinct profile relative to proficient mismatch repair (pMMR) tumours. METHODS: This prospective multicentric study involved 251 stage I-III CRC patients. Analysed biomarkers were EGFR (binding assay), VEGFA, thymidylate synthase (TS), thymidine phosphorylase (TP) and dihydropyrimidine dehydrogenase (DPD) expressions, MMR status, mutations of KRAS (codons 12-13), BRAF (V600E), PIK3CA (exons 9 and 20), APC (exon 15) and P53 (exons 4-9), CpG island methylation phenotype status, ploidy, S-phase, LOH. RESULTS: The only significant predictor of relapse-free survival (RFS) was tumour staging. Analyses restricted to stage III showed a trend towards a shorter RFS in KRAS-mutated (P=0.005), BRAF wt (P=0.009) and pMMR tumours (P=0.036). Deficient mismatch repair tumours significantly demonstrated higher TS (median 3.1 vs 1.4) and TP (median 5.8 vs 3.5) expression relative to pMMR (P<0.001) and show higher DPD expression (median 14.9 vs 7.9, P=0.027) and EGFR content (median 69 vs 38, P=0.037) relative to pMMR. CONCLUSIONS: Present data suggesting that both TS and DPD are overexpressed in dMMR tumours as compared with pMMR tumours provide a strong rationale that may explain the resistance of dMMR tumours to 5FU-based therapy.

Vesico-appendiceal fistula revealing pseudomyxoma peritonei.

We report a case of grade III pseudomyxoma peritonei revealed by mucusuria and abdominal mass. These symptoms are unusual; the most frequent clinical presentation is acute appendicitis or progressively increasing abdominal diameter.

Ankle brachial index using an automatic blood pressure device in occupational medicine: relevance in routine examination and comparison with Framingham cardio-vascular risk score.

AIM: The aim of this study was to assess the feasibility and relevance of determining ankle brachial index (ABI) using an automatic blood pressure device in subjects seen for their annual routine examination by occupational physicians and to compare the obtained ABI with the Framingham score. PATIENTS AND METHODS: Sixteen physicians randomly recruited 634 subjects in 12 departments of occupational medicine. Subjects aged between 40 and 60 years underwent a determination of ABI using an OMRON HM 722 device and the analysis of Framingham score. Other analysed variables were: sex, age, smoking habit, hypertension, diabetes, hypercholesterolemia, glycaemia, total cholesterol, HDL and LDL cholesterol and triglycerides levels. RESULTS: Mean age of the population studied was 48.1 ± 6.0 years; 73% were men, 36% were smokers, 14% had hypertension, 3.3% diabetes and 22% hypercholesterolemia. Biochemical values were glycaemia 0.90 ± 0.30 g/l, total cholesterol 2.10 ± 0.4 g/l, HDL cholesterol level 0.50 ± 0.20 g/l, LDL cholesterol level 1.30 ± 0.40 g/l, and triglycerides 1.40 ± 1.0 g/l. Mean ABI were 1.1 ± 0.1 in both legs. Mean Framingham score was 8.2 ± 5.4%. Only 20 subjects (3%) had an ABI < 0.90. No relation was found between pathological ABI and Framingham score (abnormal ABI : 9.9 ± 5.5 vs. normal ABI : 8.2 ± 5.4, NS). CONCLUSION: The determination of ABI using a simple commercially available automatic blood pressure device is feasible and easy to implement by preventive or general physicians in all kinds of routine examinations. In our opinion automatic ABI very easy and quick to determine provides, in addition to Framingham score, a simple and useful tool to detect subjects at high cardio-vascular risk.

The place of simulation in the surgical resident curriculum. The pedagogic program of the Nice Medical School Simulation Center.

INTRODUCTION: Surgical training relies on medical school lectures, practical training in patient care and in the operating room including instruction in anatomy and experimental surgery. Training with different techniques of simulators can complete this. Simulator-based training, widely used in North America, can be applied to several aspects of surgical training without any risk for patients: technical skills in both open and laparoscopic surgery, the notion of teamwork and the multidisciplinary management of acute medicosurgical situations. METHOD: We present the curriculum developed in the Simulation Center of the Medical School of Nice Sophia-Antipolis. All residents in training at the Medical School participate in this curriculum. RESULTS: Each medical student is required to pursue theoretical training (familiarization with the operating room check-list), training in patient management using a high fidelity mannequin for various medical and surgical scenarios and training in technical gestures in open and laparoscopic surgery over a 2-year period, followed by an examination to validate all technical aptitudes. This curriculum has been approved and accredited by the prestigious American College of Surgeons, making this the first of its kind in France. CONCLUSION: As such, it should be considered as a model and, in accordance to the wishes of the French Surgical Academy, the first step toward the creation of true schools of surgery.

Outcome of exfoliative rejection after isolated intestinal transplantation in an adult: case report.

A 34-year-old-man with short-bowel syndrome received an isolated small bowel graft. On postoperative day (POD) 11, ileal biopsy specimen demonstrated mild to moderate rejection that did not respond to corticosteroid bolus therapy. On POD 14, endoscopy and histologic examination revealed exfoliative rejection that was not controlled after 14 days of therapy with thymoglobulin. On POD 95, the patient underwent surgery again because of intestinal obstruction. The graft was removed 6 months after transplantation because of continuous severe abdominal pain with weight loss. After enterectomy, the patient developed multiple-organ failure and died on POD day 8. This case underlines the severity of exfoliative rejection and suggests that early enterectomy be performed when the diagnosis is made, before deterioration of clinical status and development of infectious and nutritional complications.

Esophageal varices in chronic intestinal insufficiency in absence of portal hypertension or liver cirrhosis: case report.

We report the case of a 62-year-old man with short-bowel syndrome, referred for intestinal transplantation, who had esophageal varices (EV) due to superior vena cava (SVC) thrombosis. Pretransplantation work-up revealed protein S deficiency. Results of liver function tests were normal. Upper endoscopy showed grade II to III EV in the upper and middle segments of the esophagus. Computed tomography demonstrated thrombosis of the jugular, subclavian, and SVC veins and marked collateral vessels in the chest. Transient elastography yielded normal findings. A liver biopsy specimen showed a normal aspect of the liver, without fibrosis or liver cirrhosis. Presence of EV in a patient with chronic intestinal insufficiency may be related to collateral venous circulation associated with SVC thrombosis in the absence of portal hypertension. In this situation, an isolated intestinal graft is indicated.

Adrenocortical incidentaloma with uncertain prognosis associated with an inadequately treated congenital adrenal hyperplasia.

Large adrenal tumors are rarely associated with adrenal enzymatic deficiency, except in 11-ss-hydroxylase insufficiency. These tumors are exceptionally malignant. We report here the case of a patient with a congenital 21-hydroxylase deficiency (compound heterozygote for two severe mutations in the CYP21A2 gene) untreated for 20 years. His evaluation at 36 years of age showed a four-centimeter mass in the left adrenal gland, with most characteristics suggestive of malignancy (CT and positron emission tomography [PET] scan). We performed a surgical resection that established the diagnosis of adrenocortical tumor of uncertain prognosis (Weiss's score: 3). Even though malignant tumors are unusual in adrenal deficiency, our observation shows the need for a replacement therapy during adulthood, with a regular CT scan follow up in order to diagnose early isolated adrenal adenoma and remove it in case of malignancy suspicion.

[Feasibility and preliminary experiment of a routine use of Da-VinciS in fertility surgery]. / Faisabilité et expérience préliminaire de l'utilisation du robot Da-VinciS dans la chirurgie de l'infertilité féminine.

OBJECTIVES: The goal of our study is to evaluate the use of Da-Vinci S in the field of fertility laparoscopic surgery. MATERIALS AND METHODS: Ten successive patients were included for a laparoscopic fertility surgery using the Da-Vinci S. Surgical feasibility, operating time, length of hospital stay and postoperative complications have been analyzed. RESULTS: All procedures have been completed using Da-Vinci S. CONCLUSION: In our preliminary surgical experience, the Da-Vinci S can be technically used in the field of fertility surgery.

Epidermal growth factor receptor (EGFR) status and K-Ras mutations in colorectal cancer.

BACKGROUND: In advanced colorectal cancer, K-Ras somatic mutations predict resistance to mAbs targeting epidermal growth factor receptor (EGFR). Relationships between K-Ras mutations and EGFR status have not been examined so far. We analyzed relationships between K-Ras mutations and EGFR tumoral status based on EGFR germinal polymorphisms, gene copy number and expression. METHODS: Eighty colorectal tumors (stage 0-IV) and 39 normal mucosas were analyzed. K-Ras mutations at codons 12 and 13 were detected by a sensitive enrichment double PCR-restriction fragment length polymorphism (RFLP) assay. EGFR gene polymorphisms at positions -216G>T, -191C>A and 497Arg>Lys were analyzed (PCR-RFLP), along with CA repeat polymorphism in intron 1 (fluorescent genotyping) and EGFR gene copy number (PCR amplification). EGFR expression was quantified by Scatchard binding assay. RESULTS: The number of EGFR high-affinity sites, dissociation constant (Kd), gene copy number, intron 1, -216G>T, -191C>A or 497Lys>Arg genotypes was not different between K-Ras-mutated or K-Ras-non-mutated tumors. No relationship was observed between any of the analyzed EGFR genotypes and EGFR expression. EGFR expression was not related to gene copy number. EGFR gene copy number in tumor and normal tissue was not correlated. The mean value of the tumor/normal mucosa gene copy number ratio was 1.16. CONCLUSIONS: Present data clearly show that EGFR status is independent of K-Ras mutations in colorectal tumors.

Gastrojejunocolic fistula after gastric surgery for duodenal ulcer: case report.

Gastrojejunocolic fistulae, a late complication of gastroenterostomy, are presently uncommon. Patients can present with symptoms of a fistula 20 years or more after their original gastric surgery. The knowledge of this rare condition can allow prevention, through a better operative strategy and a medical treatment at the phase of stomal ulcer with proton pump inhibitor and Helicobacter pylori eradication. We present a case of gastrojejunocolic fistula and discuss the modern management of this condition. Its etiological, clinical, and surgical features were briefly discussed.

[Bening enterogenital fistulas arising from the digestive tract: three cases]. / Fistules entérogénitales d'origine digestive bénigne: à propos de trois cas.

Fistulas between the female genital tract and the digestive tract occur after obstetrical, oncological, or post-operative complications. We report herein 3 rare cases of enterogenital fistulas: one colouterine fistula and one colotubal fistula in a patient with diverticulitis, and one ileovaginal fistula in a patient with Crohn's disease. Vaginal discharge was frequent and incited patients to consult a gynecologist. Better knowledge of enterogenital fistulas is necessary to enable earlier diagnosis and apply specific treatment. The incidence of colovaginal fistulas is increasing in diverticular disease because of increased prevalences of hysterectomies and diverticular disease.

Open inguinal hernia repair by plug and patch: the value of fibrin sealant fixation.

BACKGROUND: Prosthetic meshes give excellent results in groin hernia repair. However, although recurrence rates are very low, chronic pain remains frequent and mesh fixation may play a role in the occurrence of this complication. The use of fibrin sealant to secure the mesh may represent a useful alternative for the prevention of chronic pain. The aim of this study is to confirm that the mesh may be secured by spraying fibrin sealant and to assess the reduction in the incidence of chronic pain. METHODS: Seventy hernias were operated on in 57 patients and were evaluated on a prospective basis. The procedure involved placement of a plug and patch mesh which was secured with fibrin sealant alone. These patients were compared to a matched retrospective series of 57 patients who underwent the same procedure, except that conventional non-absorbable suture was used to secure the mesh. RESULTS: The two groups were equivalent for inclusion criteria and preoperative data. The complication rate was similar in the two groups. The operative time was shorter in the fibrin sealant group: 7 min for unilateral hernia (p=0.0017) and 16 min for bilateral hernia (p=0.0008). The length of hospital stay was also shorter in the fibrin sealant group (1.8 days vs. 2.5 days: p < 0.0001). There was no recurrence in the fibrin sealant group after a minimum follow-up of 12 months and no recurrence in the suture group after a minimum follow-up of 25 months. Finally, a significant reduction in chronic pain was observed in the fibrin sealant group (3.5% vs. 22.8%: p=0.042). CONCLUSION: This study confirms the effectiveness of fibrin glue in securing prosthetic meshes and reducing chronic inguinal pain.

EGFR in colorectal cancer: more than a simple receptor.

BACKGROUND: Advances in the understanding of tumor biology have led to the development of targeted therapies allowing progress in colorectal cancer treatment. One of the most promising targets is the epidermal growth factor receptor (EGFR). METHOD: The presence and distribution of high- and low-affinity EGFR was investigated retrospectively in a group of 82 colorectal cancer samples (43 normal colon-colon cancer paired samples) using a specific ligand binding assay (Scatchard Analysis). FINDINGS: A large majority of tumor samples exhibited one class of high-affinity binding sites (78%). Eighteen cases (22%) exhibited both high- and low-affinity binding sites. A wide interpatient variability was observed for the site number, with physiologically-relevant high-affinity sites ranging from 7 to 310 fmol/mg protein in tumors and from 6 to 313 fmol/mg protein in normal mucosa. A significant positive correlation was demonstrated between tumor and normal mucosa for the high-affinity Kd values and for the number of high-affinity sites, suggesting a common regulation for both tumor and normal tissue. INTERPRETATION: These observations (i) could explain recently-reported clinically-active EGFR targeting in colorectal tumors apparently negative for EGFR, and (ii) may offer a plausible explanation for the link observed between toxicity in normal tissue (cutaneous rash) and clinical outcome of patients treated with anti-EGFR drugs. Present data extends our understanding of EGFR identity in colorectal cancer which could be useful in reconsidering the predictive tools for the identification of tumors putatively responsive to EGFR targeted therapy.