Characterization of Connective Tissue Disease Related Interstitial Lung Disease At Selcted Centers in Addis Abeba, Ethiopia: A 4 years retrospective study
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Date
2024-02
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Addis Ababa University
Abstract
Background: CTD-ILD in one of the most frequent systemic manifestation of CTD which is
responsible the majority of mortality and morbidity in these group of patient. Indeed
characterization of connective tissue diseases related Interstitial lung diseases(CTD-ILD)
includes clinical presentation, serological fiding ,Pulmonary function test(PFT) & high-
resolution computed tomography (HRCT) findings will help in designing and implementing
prevention and management interventions, thereby reducing the severity of illness and the
number of deaths that could be associated with the disease. However published evidence are not
much available in sub-saharan country including Ethiopia.
Objective: To conduct a comprehensive characterization of CTD-related ILD including
epidemiology, clinical presentation, radiological finding, PFT, and serological finding who
attend the Rheumatology clinic at TASH, Lancet specialized hospital and Rheum specialty clinic
from Jan 2020 – Feb 2024
Methods: A Multicenter cross-sectional analytical study was conducted by at the rheumatology
clinic at TASH, Lancet and Rheum clinic in Addis Ababa, Ethiopia, during the period Jan 1st 2020 -
Feb 2024. Data was collected using a structured checklist, and then entered and analyzed using
SPSS version 26. Descriptive analysis was employed to identify the management gaps. Tables and
figures were used to present the results.
Result
With a total patient 92 the majority of the patients are female(89.2) and male (10.8%) with a
female to male ratio of 1:8 and the mmedianage of onset is 47.33 years. The most common CTD
identified are RA (44.6%), SSC (40.9%) , PM/DM (6.5%), MCTD (4.3%), SLE (3.3%) &
USCTD (1.1%). The most common clinical presentation is Cough (72.8%), Decreased exercise
tolerance (40.5%) and Dyspnea (41.3% ) but 7.6% of the patient are asympromatic . The most
identified Common Antibody Found In ILD are are ANA(47.8%), RF (47.8%) , Anti-scl-70
(37.0%) ,ACPA (29.7%) and frequently encountered ANA pattern are speckled (16.3 %),
Homogenous (15.2 %) and nuclear (10.9%). The most frequqnt CXR finding is reticilonodular
and GGO but 11% of the patient are normal .The most frequent identified HRCT pattern are
NSIP (69.6%) and UIP (28.3%). PFT test done for only 7 patients and 4 patients have restrictive
pattern and 3 patients have obstructive pattern.
Conlussion
Our study identified that CTD-ILD are more common in female and patient with RA % SSc. Most
RA patient are older and usually have long duration of illness before the diagnosis of ILD.
Relatively SSc patient are younger and most of them have Anti-scl-70 and speckled ANA
pattern. We do not identified MTX associated pneumonitis.
Description
Keywords
CTD Connective Tissue Disease ILD – Interestial Lung Disease