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Multicenter Study
. 2023 Apr 3;62(4):1586-1593.
doi: 10.1093/rheumatology/keac470.

Predicting lymphoma in Sjögren's syndrome and the pathogenetic role of parotid microenvironment through precise parotid swelling recording

Salvatore De Vita  1 , Miriam Isola  2 , Chiara Baldini  3 , Andreas V Goules  4   5 , Loukas G Chatzis  4   5 , Luca Quartuccio  1 , Alen Zabotti  1 , Ivan Giovannini  1 , Valentina Donati  3 , Francesco Ferro  3 , Maria Teresa Rizzo  1 , Valeria Manfrè  1 , Enrico Pegolo  6 , Michael Voulgarelis  4   5 , Francesco Zaja  7 , Renato Fanin  8 , Christos Masaoutis  9 , Dimitra Rontogianni  9 , Dimitrios I Fotiadis  10   11 , Maurilio Ponzoni  12   13 , Athanasios G Tzioufas  4   5
Affiliations
Multicenter Study

Predicting lymphoma in Sjögren's syndrome and the pathogenetic role of parotid microenvironment through precise parotid swelling recording

Salvatore De Vita et al. Rheumatology (Oxford). .

Abstract

Objective: Parotid swelling (PSW) is a major predictor of non-Hodgkin's lymphoma (NHL) in primary SS (pSS). However, since detailed information on the time of onset and duration of PSW is scarce, this was investigated to verify whether it may lead to further improved prediction. NHL localization was concomitantly studied to evaluate the role of the parotid gland microenvironment in pSS-related lymphomagenesis.

Methods: A multicentre study was conducted among patients with pSS who developed B cell NHL during follow-up and matched controls that did not develop NHL. The study focused on the history of salivary gland and lachrymal gland swelling, evaluated in detail at different times and for different durations, and on the localization of NHL at onset.

Results: PSW was significantly more frequent among the cases: at the time of first referred pSS symptoms before diagnosis, at diagnosis and from pSS diagnosis to NHL. The duration of PSW was evaluated starting from pSS diagnosis, and the NHL risk increased from PSW of 2-12 months to >12 months. NHL was prevalently localized in the parotid glands of the cases.

Conclusion: A more precise clinical recording of PSW can improve lymphoma prediction in pSS. PSW as a very early symptom is a predictor, and a longer duration of PSW is associated with a higher risk of NHL. Since lymphoma usually localizes in the parotid glands, and not in the other salivary or lachrymal glands, the parotid microenvironment appears to be involved in the whole history of pSS and related lymphomagenesis.

Keywords: Lymphoma; Parotid; Salivary swelling; Sjögren Syndrome.

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