Rheumatology
Clinical discussions on autoimmune diseases, biologic therapies, vasculitis, and musculoskeletal conditions.
Recent Discussions
Would the need for infliximab/MTX/nonsteroidals to control initial irAE affect your decision to rechallenge these patients with ICI?
Infliximab and methotrexate are generally used in irAE grades 3 or 4, or in grade 2 irAEs that are refractory to initial treatment with steroids. Methotrexate is typically used for irAEs of the musculoskeletal system, such as inflammatory arthritis or myositis. Infliximab tends to be used in the set...
Do you screen for cardiac disease in patients with dermatomyositis in the absence of symptoms?
I don't typically evaluate for cardiac disease in patients with dermatomyositis who are not symptomatic. There are subtypes of myositis patients where cardiac involvement is more common (such as those with antimitochondrial antibodies and anti-SRP antibodies), and there it may make sense to keep a c...
In patients with SLE do you have concerns about using trimethoprim-sulfamethoxazole (Bactrim) because of a potential risk of lupus flare?
I agree with Dr. @Dr. First Last . I have had too many SLE patients over the years show up in my office with a severe flare from TMP/SMX. We have too many alternative antibiotics these days, including for PJP prophylaxis, so sulfonamide antibiotics should be avoided in SLE patients. The typical scen...
What is the difference between P155/140 and TIF1-γ antibodies on the ARUP myositis panel?
TIF1g is the name of the protein itself, whereas "p155/140" refers to the IP (immunoprecipitation) finding of 2 distinct bands at 155 kDa (TIF1g) and 140 kDa (TIF1a), indicative of an anti-TIF1g antibody response. Until recently, ARUP (like most commercial laboratories) used immunoblotting, as it is...
Before re-challenging a patient with ICI after grade 1-2 pneumonitis, do you re-image to confirm resolution of pneumonitis?
Grade 1 pneumonitis is defined as confined to one lobe of the lung or <25% of the total lung parenchyma, while grade 2 pneumonitis is defined as involving more than one lobe of the lung or 25-50% of the lung parenchyma. Grade 1 pneumonitis is typically an incidental finding on CT in an asymptomatic ...
Do you recommend allopurinol desensitization in gout patients who develop a rash on allopurinol therapy?
I don't recommend desensitization for allopurinol-allergic patients. There was a time when this made sense due to the lack of a viable alternative therapy. The process is cumbersome in a private practice setting and not as simple as providing the patient with a prescription for febuxostat.Febuxostat...
In light of promising results of hydroxychloroquine in COVID-19, should we consider using it prophylactically in cancer patients, especially if immunocompromised?
At this time, as there is no good evidence available, I would not recommend the use of hydroxycholoroquine prophylactically in cancer patients. It is unclear whether it would prevent contagion, probably not, and we still don't know if it will have any effect on the course of COVID-19. We expect ther...
For patients <65 with significant intermittent steroid exposure who otherwise do not have risk factors for osteoporosis, when, if ever, do you recommend considering DEXA screening?
The FRAX guidelines recommend answering "Yes" for glucocorticoid use when a patient has received the equivalent of prednisone ≥5 mg daily for more than 3 months. However, many patients with rheumatoid arthritis have been treated with intermittent courses of corticosteroids over several years, which ...
How do you approach work up for underlying rheumatologic disease in patients referred for chronic urticaria?
Chronic urticaria (6 weeks or longer) is often a self-limited disorder seemingly idiopathic in etiology. There are certain autoimmune disease more prevalent in patients with chronic urticaria including systemic lupus erythematosus, Sjogren's syndrome, autoimmune thyroid disease, celiac sprue, and rh...
How would you approach the evaluation and management of a patient with rheumatoid arthritis receiving leflunomide who presents with progressive peripheral pulmonary cavitary nodules, with biopsy revealing necrotizing granulomatous inflammation?
Given the association between leflunomide and nodules with necrosis and giant cells (though quite rare), I would consider stopping leflunomide and moving to another agent. I would, of course, make sure that cultures are negative on those nodules, given it could be mycobacterial, fungal, or even GPA.