{Reference Type}: Journal Article
{Title}: Hematological malignancy-associated pyoderma gangrenosum: evaluating the magnitude of the association.
{Author}: Kridin K;Ankary-Khaner M;Kridin M;Cohen AD;Badarny S;
{Journal}: Front Med (Lausanne)
{Volume}: 11
{Issue}: 0
{Year}: 2024
{Factor}: 5.058
{DOI}: 10.3389/fmed.2024.1425454
{Abstract}: <B>UNASSIGNED: </B>Hematologic malignancies (HMs) are well-known underlying comorbidities of pyoderma gangrenosum (PG). However, studies quantifying the likelihood of PG after HMs are yet to be performed.<BR><B>UNASSIGNED: </B>To investigate the bidirectional association between PG and several HMs, namely acute leukemia, chronic leukemia, Hodgkin lymphoma, non-Hodgkin lymphoma, and multiple myeloma.<BR><B>UNASSIGNED: </B>A population-based retrospective cohort study was conducted to study the risk of HMs in patients with PG (n = 302) as compared to age-, sex-and ethnicity-matched control subjects (n = 1,799). A case-control design was used to estimate the likelihood of PG in individuals with a preexisting history of HMs. Adjusted hazard ratios (HRs) and adjusted odds ratios (ORs) were estimated by Cox regression and logistic regression, respectively.<BR><B>UNASSIGNED: </B>The prevalence of preexisting HM was higher in patients with PG than in controls (6.7% vs. 0.9%, respectively). The likelihood of having PG was significantly greater among patients with a history of HM (adjusted OR, 7.88; 95% CI, 3.85-16.15; p < 0.001), particularly during the first year following the diagnosis. This association was significant for acute leukemia, chronic leukemia, non-Hodgkin lymphoma, and multiple myeloma but not for Hodgkin lymphoma. The incidence rate of HM was 3.3 (95% CI, 1.2-7.4) and 1.6 (95% CI, 0.9-2.6)/1,000 person-years among patients with PG and controls, respectively. Relative to controls, patients with PG were not more likely to develop subsequent HM (adjusted HR, 2.22; 95%CI, 0.77-6.45; p = 0.142). Compared to other patients with PG, those with HM-associated PG experienced an increased all-cause mortality rate (adjusted HR, 2.19; 95%CI, 1.09-4.40; p = 0.028).<BR><B>UNASSIGNED: </B>HM, particularly acute leukemia and multiple myeloma, are associated with an elevated likelihood of provoking PG.