MRCP2-3600
A 55-year-old female patient visits the dermatology outpatient department complaining of a scaly, erythematous rash on her hands that has been present for two months. She also reports skin discoloration on her eyelids and general muscle aches and pains, which she is managing with over-the-counter pain medication. Upon examination, the patient has scaly erythematous plaques on her MCP and ICP joints and a violaceous rash on her upper eyelids. Based on these symptoms, what is the most probable underlying malignancy?