HRCT imaging features of systemic sclerosis-associated interstitial lung disease
Published on: 27th April, 2021
OCLC Number/Unique Identifier: 9026724831
Background: The aim of the study was to evaluate radiographic features of systemic sclerosis-associated interstitial lung disease.
Patients and methods: 116 patients with systemic sclerosis-associated interstitial lung disease (SSc-ILD) from 2010 to 2019 comprised our retrospective study. All patients were subject to high resolution computed tomography (HRCT). ILD patterns were classified into 7 patterns as IIPs and analyzed with pathology. We chose two staging method and two semi-quantitative score methods to evaluate the HRCT performance and analyzed with pulmonary function tests.
Results: Ground-glass opacities were the most common presentation on HRCT, followed by interlobular septal thickening, reticular opacities, intralobular interstitial thickening; honeycombing, traction bronchiectasis and nodules can also be observed. The most common pattern of SSc-ILD was nonspecific interstitial pneumonia (NSIP), secondly was UIP. There was no difference in ILD pattern between HRCT and pathology, and revealed a high congruence. The four HRCT evaluating methods presented in this study all had significant relationships with PETs.
Conclusion: The most common pattern of SSc-ILD was nonspecific interstitial pneumonia (NSIP). The ILD patterns of HRCT coincide very well with histology, and will replace pathology as the gold standard for diagnosis and evaluation of SSc-ILD.
Systemic sclerosis sine scleroderma presenting as renal crisis, a case report and review of the literature
Published on: 17th April, 2023
Systemic sclerosis sine scleroderma is a rare subset of systemic sclerosis with isolated organ involvement. Scleroderma renal crisis is a severe manifestation of systemic sclerosis characterized by malignant hypertension, oligo/anuric renal failure, and thrombotic microangiopathy. We present a case of a 55-year-old male with uncontrolled hypertension who presented with hematospermia and was found to have acute renal failure, microangiopathic hemolytic anemia, concerning thrombotic microangiopathy. Empiric management for thrombotic thrombocytopenic purpura (TTP) with plasma exchange and corticosteroids yielded a paradoxical response, ultimately leading to the diagnosis of systemic sclerosis sine scleroderma presenting as scleroderma renal crisis (SRC) after serological confirmation. Given the morbidity and mortality associated with scleroderma renal crisis, it should be increasingly considered as a differential for thrombotic microangiopathy even without outward manifestations of systemic sclerosis. Additionally, the empiric management of TTP can include the use of corticosteroids which can exacerbate SRC, an early clinical clue in the diagnosis of this disease.
Longitudinal Risk Phenotyping in Incident Systemic Sclerosis-associated Pulmonary Arterial Hypertension (SSc-PAH): An Unsupervised Cluster Analysis of the PHAROS Registry
Published on: 15th March, 2024
Background: Systemic sclerosis-associated pulmonary arterial hypertension (SSc-PAH) is characterized by pulmonary arterial remodeling resulting in right ventricular failure and death if untreated. Despite therapeutic advances, there is survival variability within the SSc-PAH population. The aim of this study was to delineate high-risk subgroups of SSc-PAH using readily available clinical parameters.Methods: We analyzed data from the PHAROS database, a prospective observational registry of incident SSc-PAH patients. Latent class modeling was performed based on trends in 6MWD over time. We compared survival between the clusters regarding baseline clinical parameters and changes in these parameters over time.Results: We identified four unique groups within 103 patients meeting our inclusion criteria, based on trajectories of 6MWD. Patients in Cluster 4 exhibited a decline in 6MWD over time and had the worst prognosis with a median survival of 3 years. Patients in Cluster 3, with the lowest baseline 6MWD, were associated with lower median survival (5 years) when compared to Clusters 1 and 2 (> 9 and 7 years, respectively), despite an improvement in 6MWD over time. There were no meaningful changes in SF-36 and WHO functional class between the clusters, but BNP trended higher over time in the higher-risk clusters. Conclusion: We identified high-risk subsets of SSc-PAH characterized by significantly worse survival. Incident SSc-PAH patients with a decline in 6MWD over time or low baseline 6MWD had worse survival when compared to SSc-PAH patients who demonstrated relatively stable or mild reduction in 6MWD over time.
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