case_images: PMC11043565_01
case_images: Left subclavian lymph node biopsy. Conventional hematoxylin and eosin staining (H&E), 400X. Multiple lesions containing a significant number of histiocytes and nuclear debris are observed in the lymph nodes. No neutrophils or plasma cells are seen (A, B).
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case_images: We performed a lymph node pathological biopsy ( Figures 1A, B ), which led to the diagnosis of KFD (necrotic lymphadenitis).
case_images: MRI and CTV of the patient's brain showing multiple intracranial thrombosis in the venous sinus. (A) T2 imaging suggests multiple superficial venous thrombosis (indicated by the arrow). (B) T1-enhanced imaging showing the same results as those shown in (A). (C) T2 flare imaging indicating superior sagittal sinus thrombosis (indicated by the arrow). (D) T2-enhanced imaging showing the same results as those shown in (C). (E) CTV showing a filling defect in the superior sagittal sinus on CTV, indicating thrombosis formation. (F) After treatment of CTV, partial resolution of the superior sagittal sinus thrombus and improvement in thrombus severity are seen, compared with before treatment.
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case_images: Cerebral MRA+MRV ( Figures 2A-D ) and CTV ( Figure 2E ) scans revealed superior sagittal sinus thrombosis as the cause of her headache.
case_images: The picture showed the levels change of C3 and C4 during the process of treatment. (g/L, reference value C3,0.79-1.52; C4, 0.16-0.38).
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case_images: Table 1 ,  Figure 3 ). The patient is currently under close monitoring with regular follow-up appointments.