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Inicio Revista Colombiana de Reumatología (English Edition) Frequency of Sjögren’s syndrome in patients with dry symptoms using two histo...
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Original Investigation
Frequency of Sjögren’s syndrome in patients with dry symptoms using two histopathological methods
Frecuencia del síndrome de Sjögren en pacientes con síntomas secos mediante dos métodos histopatológicos
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Jairo Cajamarca-Baróna,
Corresponding author
jairocajamarca@hotmail.com

Corresponding author.
, Diana Guavita-Navarroa, Ana María Gutiérrez Curab, Paula Cristina Castro Quirogab, Héctor Cubidesa, Ana María Arredondoa, Alejandro Escobara, José Fernando Polo Nietoc, Claudia Ibáñezd, Adriana Rojas-Villarragad
a Department of Rheumatology, Hospital San José, Fundación Universitaria de Ciencias de la Salud (FUCS), Bogotá, Colombia
b Department of Pathology, Hospital San José, Fundación Universitaria de Ciencias de la Salud, (FUCS), Bogotá, Colombia
c Department of Pathology, Hospital Infantil Universitario de San José, Hospital Universitario de San José, Fundación Universitaria de Ciencias de la Salud, (FUCS), Bogotá, Colombia
d Research Institute, Fundación Universitaria de Ciencias de la Salud, (FUCS), Bogotá, Colombia
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Received 10 January 2022. Accepted 09 March 2022
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Figures (2)
Tables (3)
Table 1. Characteristics of the included individuals and frequency of Sjögren’s syndrome according to the two histopathological techniques.
Table 2. Frequency of histopathological findings between observers and intra- and inter-observer agreement.
Table 3. Morphological criteria of two histopathological methods for the diagnosis of Sjögren’s syndrome in minor salivary gland biopsy.
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Abstract
Introduction and objective

The criteria for Sjögren’s syndrome (SS) classification (ACR/EULAR 2016), include labial salivary gland (LSG) biopsy using the focus score (FS). But, in some cases it continues to be based on Chisholm and Mason (CM). Our objective was to evaluate the frequency of SS in patients with dry symptoms using FS and CM and to evaluate the degree of inter and intra-observer concordance of the histopathological reading by both methods.

Materials and methods

Cross-sectional study design. All patients with dry symptoms and studies to perform the SS classification criteria (2016) were included. The samples were independently evaluated by two readers. Descriptive statistics was used for the calculation of SS frequency. Agreement (Cohen’s Kappa coefficient) was analysed (STATA) for each test (CM and FS). Ethics approval was obtained.

Results

92 patients were included. According to the 2016 criteria, SS was reported in 26.1% patients in whom FS was used and in 34.8% patients in whom CM was used. The degree of intra-observer concordance for the diagnosis of FLS was perfect and moderate-high for observers. Inter-observer agreement was substantial, with kappa values ​​of .77 FS and .75 CM.

Conclusions

FS method is a more detailed and specific score that facilitates correct classification. The use of CM as a histopathological classificatory method for SS includes more patients when compared with FS. These results are of relevance to standardise the reading of LSG biopsy in specialized services attending SS patients.

Keywords:
Sjögren’s syndrome
Minor salivary gland biopsy
Focus Score
Chisolm Mason
Resumen
Introducción y objetivo

Los criterios de clasificación del síndrome de Sjögren (SS) (ACR/EULAR-2016) incluyen la biopsia de glándula salival menor (BGSM), la cual utiliza el puntaje de focos (Focus Score/FS), pero en algunos casos sigue basándose en Chisholm y Mason (CM). Nuestro objetivo fue evaluar la frecuencia de SS en pacientes con síntomas secos, mediante el uso de FS y CM y el grado de concordancia inter e intraobservador de la lectura por ambos métodos.

Materiales y métodos

Estudio transversal. Se incluyeron todos los pacientes con síntomas secos y estudios para realizar los criterios de clasificación SS (2016). Dos lectores hicieron la evaluación independiente. Se utilizó estadística descriptiva para el cálculo de la frecuencia de SS. Se analizó la concordancia interobservadores e intraobservadores (Kappa de Cohen) (STATA) para cada prueba (CM y FS). Se obtuvo aprobación ética.

Resultados

Se incluyeron 92 pacientes. Se clasificó SS en el 26,1% de los pacientes en quienes se empleó FS y en el 34,8% en quienes se empleó CM. El grado de concordancia intraobservador fue perfecto y moderado-alto para los observadores. La concordancia interobservador fue sustancial, con valores de kappa de 0,77 FS y 0,75 CM.

Conclusiones

El método FS es una puntuación más detallada y específica que facilita una correcta clasificación. El uso de CM como método de clasificación histopatológica para SS incluye más pacientes en comparación con FS. Estos resultados son relevantes para unificar la lectura de la BGSM en los servicios que atienden pacientes con SS.

Palabras clave:
Síndrome de Sjögren
Biopsia de glándula salival menor
Focus Score
Chisolm Mason

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