Rheumatoid NodulePanniculitis, Nodular NonsuppurativeDirofilariaPanniculitisDirofilariasisHobbiesSubcutaneous TissueFat NecrosisErythema NodosumRoot Nodules, PlantArthritis, RheumatoidMultiple Pulmonary NodulesSymbiosisNitrogen FixationLotusLeghemoglobinPlant Root NodulationRhizobiumPlant RootsFabaceaeMedicago sativaSinorhizobium melilotiMedicago truncatulaBiopsy, Fine-NeedleBradyrhizobiumRhizobiaceaeRheumatic NoduleThyroid NeoplasmsSoybeansRhizobium leguminosarum