A 68-year-old man has a rapidly spreading eruption of broad, concentric, erythematous bands with an edged wood-grain appearance moving across the trunk daily, accompanied by intense pruritus. Which underlying malignancy is most characteristically associated?
- A Hodgkin lymphoma
- B Bronchogenic carcinoma ✓
- C Chronic myeloid leukaemia
- D Renal cell carcinoma
Correct answer: B. Bronchogenic carcinoma
Explanation
Erythema gyratum repens is the most specific paraneoplastic eruption known, with roughly 80 percent of cases associated with internal malignancy, and lung cancer accounts for the largest share. Its rapid-moving wood-grain bands distinguish it from erythema annulare centrifugum, which is slower, finer, has a trailing scale, and is usually linked to infection rather than cancer.
Reference: Bolognia, Dermatology, 5th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.