Kikuchi-Fujimoto disease and acute appendicitis

Bilateral preretinal hemorrhage associated with Kikuchi-Fujimoto disease

Purpose

To present a case of a patient with human immunodeficiency virus (HIV) disease and Kikuchi-Fujimoto disease (KFD) who presented with a unique pattern of retinopathy.

Observations

A 7-year-old Taiwanese girl with HIV disease who was recently diagnosed with KFD had a sudden onset of blurry vision in both eyes one month after her KFD systemic symptoms had relatively resolved. Ophthalmic examination showed decreased visual acuity in both eyes (OU). On fundus examination, she had bilateral preretinal, subhyaloid, and vitreous hemorrhage that was more severe than anemic retinopathy.

Conclusion

Ocular manifestations in Kikuchi-Fujimoto disease are rare; however, if they occur, presentations may vary. The exact etiology of the disease has remained elusive and controversial. This case is the first report of a patient with HIV disease and KFD presenting with ocular involvement. Furthermore, bilateral preretinal, subhyaloid, and vitreous hemorrhage, which was beyond anemic retinopathy, is an unprecedented manifestation of KFD that has not been previously reported. This case highlights the necessity for clinicians to consider all possible differential diagnoses when evaluating patients with similar findings to identify the best therapeutic approach and avoid unnecessary treatment.

Histiocytic Necrotizing Lymphadenitis Mimicking Acute Appendicitis in a Child: A Case Report

Background: Histiocytic necrotizing lymphadenitis, also known as Kikuchi-Fujimoto disease (KFD), is a self-limiting inflammatory disease with low incidence and high misdiagnosis rate in children. Furthermore, cases where the clinical presentation resembles acute appendicitis are very rare. Case Presentation: A 14-year-old boy was misdiagnosed as acute appendicitis and received operative treatment at his early visit. He suffered from abdominal pain, vomiting, diarrhea, fever, and lymphadenitis at the ileocecal junction, which were found by B-ultrasonography examination and surgery. Lymphadenectomy, as well as appendectomy, was performed, and KFD was identified by pathological examination. The patient was transferred to our hospital for further therapy because of recurrent fever and abdominal pain after the appendectomy. His temperature became normal after methylprednisolone was administered, and no recurrence was observed till now during follow-up. Conclusions: Necrotizing lymphadenitis involving mesenteric lymph nodes may cause acute-appendicitis-like symptom; KFD should be a diagnostic consideration for mesenteric lymphadenitis.

Acute fulminant necrotizing mesenteric lymphadenitis causing bowel ischemia

This case report documents the medical progression of a 56-year-old man who presented with a small bowel obstruction and was found to have acute fulminant necrotizing mesenteric lymphadenitis causing small intestinal ischemia. A large portion of the proximal jejunal mesentery was necrotic with vascular thrombosis leading to small bowel ischemia and obstruction. He was successfully managed surgically and survived. The evaluation and possible aetiologies are discussed.

Kikuchi-Fujimoto Disease Masquerading as Acute Appendicitis

Kikuchi-Fujimoto Disease (KFD) is a self-limiting necrotizing lymphadenitis that usually presents with fever and cervical lymphadenopathy. Recognition of this condition is crucial, because it can be mistaken for tuberculosis, lymphoma and connective tissue disorders. When present at an unusual location the diagnosis can be challenging. We present an unusual case of Kikuchi-Fujimoto disease involving mesenteric lymph node masquerading as acute appendicitis along with its differential diagnosis. A 30-year-old female presented with complaints of acute abdominal pain, vomiting and fever. Physical examination revealed rebound tenderness in the right iliac fossa. The abdominal sonography was suspicious of acute appendicitis. The patient underwent appendectomy with excision of an enlarged mesenteric lymph node. On histopathology mesenteric node showed features of KFD which was confirmed on immunohistochemistry. Appendix was unremarkable. Although rare KFD should be added to the differential diagnosis of acute appendicitis in patients with enlarged mesenteric lymph nodes, Awareness of this disorder helps to prevent misdiagnosis and inappropriate treatment.