 [ Symptoms ] why can not i urinate [ Disease ] hi sarcoidosis can cause formation of lumps or granulomas or it can involve the lymph nodes if she has any symptoms like pain then painkillers  can help but should be taken only under consent with her doctor as she already has renal failure also a biopsy can be do e if further confirmation is needed can you also tell that these bumps appeared suddenly or gradually are they painful please revert back regards