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To the Editor. —
A 73-year-old man with insulin-dependent diabetes mellitus, suffering from an increasing, leftsided headache (particularly localized in the temporal region) for 5 days, was transferred to our department with the clinical diagnosis of temporal arteritis. The suspected diagnosis was supported by stiffness, low back pain, and prominent giddiness appearing as staggering vertigo. Furthermore, the patient reported a weight loss of 2 kg within the last 10 days. His physical condition was deteriorated, rectal temperature was slightly elevated to 37.2°C and his erythrocyte sedimentation rate was 63/114 mm/h.Other laboratory values were within the reference range except for the serum triglycerides whose levels were extremely elevated (43.43 mmol/ L) and the serum cholesterol whose level was 18.62 mmol/L. Chylomicrons were present in the fasting state. Further, very-low-density-lipoprotein triglyceride levels were elevated to 33.52 mmol/L, very-low-densitylipoprotein cholesterol level was 16.03 mmol/L, high-density-lipoprotein cholesterol level was 3.87 mmol/L, and low-density-lipoprotein