Effect of online training on the reliability of assessing sacroiliac joint radiographs in axial spondyloarthritis - a randomized, controlled study.

OBJECTIVE: Radiographic assessment of sacroiliac joints (SIJs) according to the modified New York (mNY) criteria is key in classification of axSpA but has moderate inter-reader agreement. We aimed to investigate the reliability improvements scoring SIJ radiographs after applying an online real-time iterative calibration (RETIC) module, in addition to a slideshow and video alone. METHODS: Nineteen readers, randomized to 2 groups (A/B), completed 3 calibration steps: I) review of manuscripts, II) review of slideshow and video and group A completed RETIC, III) re-review of slideshow+video and group B completed RETIC . The RETIC module gave instant feedback on reader's gradings and continued until predefined reliability (kappa) targets for mNY positivity/negativity were met. Each step was followed by scoring different batches of 25 radiographs (Exercises I-III). Agreement (kappa) with an expert radiologist was assessed for mNY+/mNY- and individual lesions. Improvements by training strategies were tested by linear mixed models. RESULTS: In exercises I/II/III, mNY kappas were 0.61/0.76/0.84 in group A, and 0.70/0.68/0.86 in group B, respectively, i.e. increasing, mainly after RETIC completion. Improvements were observed for both grading mNY+/mNY- and for individual pathologies, both in experienced and, particularly, inexperienced readers. Completion of the RETIC module in addition to slideshow and video caused a significant kappa increase of 0.17 (CI: 0.07-0.27, P=0.002) for mNY+/mNY- grading, while completion of slideshow and video alone did not (0.0; CI -0.10-+0.10, P=0.99). CONCLUSION: Agreement on scoring radiographs according to the mNY criteria significantly improved when adding an online RETIC module, but not by slideshow and video alone.

Utility of Plain Radiographs in Metabolic Bone Disease - A Case-Based Pictorial Review from a Tertiary Centre.

In this era of advanced high-tech imaging, the utility of plain radiographs in conditions of the bone is increasingly being overseen by both clinicians and radiologists. Plain radiography is the first-line, essential screening or diagnostic tool for diverse bone diseases, where magnetic resonance imaging (MRI) may be non-contributory. Plain radiographs often play a pivotal role in diagnosing metabolic bone disorders. This paper from a single tertiary care centre discusses ten real-life patients with metabolic bone conditions and other bone diseases with near-normal MRI of the spine, in whom plain radiographs revealed subtle findings and aided in making diagnoses. Each of these cases had a non-specific clinical presentation. They all showed inconclusive features on MRI, but subtle important radiographic findings led to a specific diagnosis. Plain radiography is key in diagnosing bone diseases. Many of these metabolic conditions clinically mimic rheumatologic conditions owing to non-specific arthralgia and back pain. Familiarity with subtle radiographic findings of these conditions may lead to early diagnosis and treatment, resulting in improved patient outcomes.

MRI predictors of infectious etiology in patients with unilateral sacroiliitis.

BACKGROUND: Unilateral presentation of sacroiliitis is a diagnostic dilemma, especially between infection and inflammatory sacroiliitis associated with spondyloarthritis, requiring an early and accurate diagnosis. OBJECTIVE: To assess the utility of magnetic resonance imaging (MRI) in differentiating infective versus inflammatory etiology in unilateral sacroiliitis. MATERIALS AND METHODS: Retrospective review of the MRI of 90 patients with unilateral sacroiliitis, having an established final diagnosis. MR images were evaluated for various bone and soft tissue changes using predefined criteria and analyzed using univariate and multivariate regression analysis. RESULTS: Among the 90 patients, infective etiology was diagnosed in 66 (73.3%) and inflammatory etiology in 24 (26.7%). Large erosions, both iliac and sacral-sided edema, joint space involvement with effusion or synovitis, soft tissue edema, elevated ESR/CRP, and absence of capsulitis and enthesitis were associated with infection (p < .001). The independently differentiating variables favoring infection on multivariate analysis were-both iliac and sacral-sided edema (OR 4.79, 95% CI: 0.96-23.81, p = .05), large erosions (OR 17.96, 95% CI: 2.66-121.02, p = .003), and joint space involvement (OR 9.9, 95% CI: 1.36-72.06, p = .02). Exclusive features of infection were osteomyelitis, sequestra, abscesses, sinus tracts, large erosions, and multifocality. All infective cases had soft tissue edema, joint space involvement, elevated ESR, and no capsulitis. CONCLUSION: MRI evaluation for the presence and pattern of bone and joint space involvement, soft tissue involvement, and careful attention to certain exclusive features will aid in differentiating infectious sacroiliitis from inflammatory sacroiliitis.

Formic acid poisoning in a tertiary care center in South India: A 2-year retrospective analysis of clinical profile and predictors of mortality.

BACKGROUND: Formic acid (FA), a common industrial compound, is used in the coagulation of rubber latex in Kerala, a state in southwestern India. Easy accessibility to FA in this region makes it available to be used for deliberate self-harm. However, the literature on intentional poisoning with FA is limited. STUDY OBJECTIVES: To determine the patterns of presentation of patients with intentional ingestion of FA and to find the predictors of mortality. A secondary objective was to find the prevalence and predictors of long-term sequelae related to the event. METHODS: We performed a 2-year chart review of patients with acute intentional ingestion of FA. Symptoms, signs, outcomes and complications were recorded, and patients who survived the attempt were followed-up by telephone or personal interview to identify any complications after their discharge from the hospital. RESULTS: A total of 302 patients with acute formic acid ingestion were identified during the study period. The mortality rate was 35.4% (n = 107). Bowel perforation (n = 39), shock (n = 73), and tracheoesophageal fistula (n = 4) were associated with 100% mortality. Quantity of FA consumed (p < 0.001), consuming undiluted FA (p < 0.001), presenting symptoms of hypotension (p < 0.001), respiratory distress (p < 0.001), severe degree of burns (p = 0.020), hematemesis (p = 0.024), complications like metabolic acidosis (p < 0.001) and acute respiratory distress syndrome (p < 0.001) were found to have significant association with mortality. The prevalence of esophageal stricture (n = 98) was 50.2% among survivors and was the most common long-term sequela among the survivors. Stricture was significantly associated with hematemesis (p < 0.001) and melena (p < 0.001). CONCLUSION: This study highlights the magnitude and ill-effects of self-harm caused by a strong corrosive, readily available due to very few restrictions in its distribution. Easy availability of FA needs to be curtailed by enforcing statutory limitations in this part of the world. Patients with hematemesis or melena after FA ingestion may be referred for early dilatation therapy in a setting where emergency endoscopic evaluation of all injured patients is not practical.

Red Herring in Orthopedics: A Case Report on Painful Os Vesalianum Pedis Masquerading as an Avulsion Fracture of 5th Metatarsal and Review of Literature.

Introduction: Os vesalianum pedis (OVP) is a rare accessory ossicle of the foot located proximal to the base of 5th metatarsal. It is usually asymptomatic but can mimic an avulsion fracture of proximal 5th metatarsal and is an infrequent cause of lateral foot pain. There have only been 11 cases of symptomatic OVP reported in the current literature. Case Report: Our patient, a 62-year-old male presented with lateral foot pain following an inversion injury of his right foot, with no history of any previous trauma. What was initially mistaken as an avulsion fracture of the 5th metacarpal base was later revealed to be an OVP on contralateral X-ray. Conclusion: Treatment is mostly conservative, but surgical excision can be done in cases following failed non-operative treatment. In the context of trauma, OVP must be differentiated from other causes of lateral foot pain such as Iselin's disease and avulsion fractures of base of 5th metatarsal. Understanding the various etiologies of the condition and what those etiologies are usually related to can help prevent unnecessary treatment.

Mycophenolate in idiopathic inflammatory myositis: outcome data of a large South Asian cohort.

BACKGROUND: Consensus on treatment of idiopathic inflammatory myositis (IIM), particularly with regard to flares and interstitial lung disease (ILD), does not exist. We studied the long-term outcome and treatment response in our large, retrospective cohort of adult South-Asian patients exclusively with IIM. METHODOLOGY: Electronic records of IIM patients satisfying inclusion and exclusion criteria were studied longitudinally at presentation, at 3, 6, 12, 18 and 24 months and thereafter yearly till their last follow up (F/u) visit. Depending on clinical, imaging, and muscle enzyme profile during the F/u period, patients were categorised as complete (CR) and partial responders (PRs). Parameters favouring CR were assessed using multivariate logistic regression analysis. Outcome parameters and flares on immunosuppressants (IS) were then assessed in patients with/without ILD. RESULTS: Two hundred thirty-two patients with median F/u duration of 44.5 months (25-80.25) were included. ILD was seen in 40.1%. Patients with non-Jo1 anti-synthetase antibodies (n=26) were numerically more than those with Jo-1 antibody (n=24). CR status was attained by 50.9% patients. Absence of pericardial effusion (p=0.042, OR 4.223, 95% CI: 1.05-16.9) and presence of Gottron's rash (p=0.044, OR 1.78, 95% CI 1.017-3.121) at baseline predicted CR by multivariate regression. Majority received mycophenolate during the entire F/u period. Discontinuation of steroids was feasible in 51.7% after a median duration of 24 months (18-42). After excluding patients with ILD, flares were numerically lesser in patients only on mycophenolate compared with those only on methotrexate (p=0.06). Further flares were curtailed when switched from other agents to mycophenolate. CONCLUSION: Mycophenolate is an effective treatment option in IIM patients with and without co-existing ILD. Presence of Gottron's rash and absence of pericardial effusion were found to be predictors of favourable clinical outcome in this largest single-centre study.

Mycophenolate mofetil and deflazacort combination in neuropsychiatric lupus: a decade of experience from a tertiary care teaching hospital in southern India.

Mycophenolate mofetil (MMF) is an effective therapeutic agent with high safety profile in the management of lupus nephritis. This retrospective study was conducted to assess the efficacy and side effect profile of MMF as induction as well as maintenance therapeutic agent along with tapering steroids in neuropsychiatric lupus (NPSLE). Hospital electronic medical records of patients with SLE diagnosed by ACR 1990 and/or SLICC 2012 criteria between January 2005 and May 2015 were retrieved. Among them, patients fulfilling ACR 1999 criteria for NPSLE were identified. Data of NPSLE patients treated with MMF as upfront second line immunosuppressive agent, both for induction and maintenance, were analyzed. Of the 140 patients with NPSLE, 88 fulfilled the inclusion criteria. Mean age of the cohort was 25.51 ± 7.82 years with female to male ratio of 84:4. Median duration of follow-up was 33 months (3-129 months). Seizure was the most common NPSLE manifestation (n = 37, 42.05%). Of the 88 patients, 18 had NPSLE solely due to secondary antiphospholipid syndrome. Of the remaining 70 patients, 61 (87.1%) had improved, 7 remained unchanged with no worsening and 3 patients had worsening or developed new symptoms during follow up after 3 months from baseline. At last follow-up, 55 out of 57 patients (97.1%) with detailed data had improved, while 2 patients had relapsed. Side effects were significantly more common in patients on prednisolone as compared to those on deflazacort. In patients with NPSLE, MMF along with tapering steroids is an efficacious combo in inducing remission and preventing relapse of disease.

Infections and arthritis.

Bacteria, viruses, fungi, and parasites can all cause arthritis of either acute or chronic nature, which can be divided into infective/septic, reactive, or inflammatory. Considerable advances have occurred in diagnostic techniques in the recent decades resulting in better treatment outcomes in patients with infective arthritis. Detection of emerging arthritogenic viruses has changed the epidemiology of infection-related arthritis. The role of viruses in the pathogenesis of chronic inflammatory arthritides such as rheumatoid arthritis is increasingly being recognized. We discuss the various causative agents of infective arthritis and emphasize on the approach to each type of arthritis, highlighting the diagnostic tests, along with their statistical accuracy. Various investigations including newer methods such as nucleic acid amplification using polymerase chain reaction are discussed along with the pitfalls in interpreting the tests.

Acute kidney injury in the tropics.

Acute kidney injury (AKI) is one of the most challenging problems faced by clinicians in the tropics owing to its fast-changing burden. AKI in the tropics is strikingly different from that in the developed world in terms of etiology and presentation. In addition, there is a stark contrast between well-developed and poor areas in the tropics. The true epidemiological picture of AKI in the tropics is not well understood due to the late presentation of patients to tertiary centers. Infections remain the major culprit in most cases of AKI, with high mortality rates in the tropics. Human immunodeficiency virus-related AKI, related to nephrotoxicity due to antiretroviral therapy, is on the rise. Acute tubular necrosis and thrombotic microangiopathy are the most common mechanisms of AKI. A notable problem in the tropics is the scarcity of resources in health centers to support patients who require critical care due to AKI. This article reviews the unique and contrasting nature of AKI in the tropics and describes its management in each situation.

Chondrosarcoma presenting as dyspnea in a 19-year-old man: a case report.

INTRODUCTION: Acute pulmonary embolism has varied presentations ranging from asymptomatic, incidentally discovered emboli to massive embolism, causing immediate death. Tumor embolism is a rare but unique complication of malignancies. This uncommon catastrophe of a malignant tumor in a young patient, culminating as a pulmonary embolism, is being reported for the first time. CASE PRESENTATION: A 19-year-old Asian man presented to the emergency service at our hospital with acute onset dyspnea. His clinical examination led to the suspicion of an acute pulmonary embolism with a lower lumbosacral radiculopathy. A magnetic resonance imaging scan of the pelvis demonstrated a chondrosarcoma arising from the right iliac wing, eroding into the common iliac vein and creeping up the inferior vena cava to lodge in the pulmonary artery, thus producing a saddle embolus. CONCLUSION: The importance of exploring for malignancies in the event of an idiopathic pulmonary embolism is highlighted. Early detection of such malignancies can substantially affect the outcome in young patients.

Impact of musculoskeletal pain on physical function and health-related quality of life in a rural community in south India: a WHO-ILAR-COPCORD-BJD India study.

Musculoskeletal (MSK) pain poses a major burden on individuals and health care systems. Assessing its pervasive impact has broadened the horizon of treatment strategies. The aim of this study was to determine the prevalence of MSK pain and its relationship with the health-related quality of life (HRQL) in a rural community. Individuals (>15 years) with MSK pain were identified by house-house survey from a population of 6,763 individuals. HRQL was assessed using the validated 'Modified Indian HAQ (CRD - Pune)', translated into regional language. Moderate and severe health assessment questionnaire disability index (HAQ-DI) scores were considered significant. Details regarding the impact of pain on their personal, family and social life were also studied. All individuals with MSK pain were evaluated clinically by a medical team and HAQ-DI was compared in different groups of disorders. Prevalence of MSK pain in the community (mean age, 52 ± 15.8 years) was 26.08% (95% CI 25.03-27.13). About 8% of the respondents reporting MSK pain had to stop work and 4% had chronic depression. A significant HAQ-DI was scored by 31% subjects. Level of education and intensity of work had significant associations with HRQL. Among the clinical diagnoses, non-specific MSK pain also scored a high HAQ-DI. MSK pain, both due to specific and non-specific disorders, showed an important impact on HRQL in this community study. Combined with ascertainment of risk factors and associations, this has implications on planning treatment and prevention. We plan to continue using HAQ in time to monitor the community.

Parvovirus B19 serology in early inflammatory polyarthritis--experience from a tertiary core teaching hospital in South India.

This study was done to look for IgM antibody to parvovirus B19 in early inflammatory arthritis patients and their clinical correlations, if any. This was a retrospective case sheet based study and follow-up. IgM antibody to parvovirus B19 was studied in 47 patients who presented to the rheumatology outpatient department with early arthropathy of less than 24 weeks' duration during their first 3 months of onset or flare of arthritis. Seropositive patients were followed up till date. Seven out of the 47 patients had IgM parvo B19 antibody. Five of the 7 had underlying chronic infective, inflammatory and other pre-existing diseases. In 5 patients, the arthritis resolved completely. In the remaining 2, mild recurrent arthralgias were attributed to existing inflammatory diseases. Fever was present in the majority, but none of them had rash. The arthropathy was symmetrical type in the majority. Only 7 (14.8%) out the 47 patients with early inflammatory arthritis had antibody to parvovirus B19, 5 of the 7 had self-limiting course; there was no association of this virus with chronic inflammatory arthropathy in this cohort over a 9-year follow-up.