BACKGROUND Acquired hemophilia A (AHA) is a rare and potentially severe bleeding disordercaused by circulating autoantibodies against factor Ⅷ (FⅧ). In approximately50% of the patients, the condition is associated w...BACKGROUND Acquired hemophilia A (AHA) is a rare and potentially severe bleeding disordercaused by circulating autoantibodies against factor Ⅷ (FⅧ). In approximately50% of the patients, the condition is associated with autoimmune diseases,cancers, medication use, pregnancy, and the post-partum period. Bullous pemphigoid(BP) is a chronic autoimmune subepidermal blistering disease associatedwith tissue-bound and circulating autoantibodies against BP antigens 180 (BP180)and 230 (BP230). AHA-associated BP has a high mortality rate;hence, the understandingof this disease must improve.CASE SUMMARY A 69-year-old man presented with erythema, blisters, blood blisters, and crustsaccompanied by severe pruritus for more than 20 days, and ecchymosis andswelling on his left upper arm for 3 days. Pathological examination revealed asubepidermal blister that contained eosinophils. Laboratory tests showed that theBP180 autoantibody levels had increased, isolated activated partial thromboplastintime was notably prolonged (115.6 s), and coagulation FⅧ activity wasextremely low (< 1.0%). Furthermore, the FⅧ inhibitor titer had greatlyincreased (59.2 Bethesda units). Therefore, the patient was diagnosed as having BP associated with AHA, prescribed 0.05% topical halometasone cream, and transferred to a higher-level hospitalfor effective treatment;however, he died after 2 days.CONCLUSION AHA associated BP is rare, dangerous, and has a high mortality rate. Therefore, its timely diagnosis and effectivetreatment are necessary.展开更多
BACKGROUND Langerhans cell histiocytosis(LCH)is a rare clonal proliferative disease of Langerhans cells with unknown pathogenesis.An increasing number of clinicians recognize that LCH has a wide clinical spectrum and ...BACKGROUND Langerhans cell histiocytosis(LCH)is a rare clonal proliferative disease of Langerhans cells with unknown pathogenesis.An increasing number of clinicians recognize that LCH has a wide clinical spectrum and a highly varied course.Adults rarely develop LCH.Here,we report a case of adult localized LCH.CASE SUMMARY A 32-year-old woman presented with plaques and ulcers on the vulva and crissum,accompanied by pain that persisted for more than one year.Physical examination revealed a red-infiltrating plaque with ulcerations and exudates in the vulva and crissum.Pathological examination revealed a diffuse infiltration of lymphocytes,eosinophilic granulocytes,and histiocytoid cells in the superficial dermis.Proliferative histiocytoid cells showed mild atypia,partly with kidneyshaped nuclei.Immunohistochemical examination showed that the histiocytoid cells were positive for S100 protein and CD1 and weakly positive for CD68(20%+),with a Ki-67 index of 30%.Laboratory tests did not reveal any other systemic damage.The patient was diagnosed with adult localized LCH and was prescribed oral prednisone(20 mg)once daily.The skin lesions gradually improved and are still being followed-up.CONCLUSION Adult localized LCH is rare and must be differentiated from other common conditions.展开更多
基金Supported by Traditional Chinese Medicine Research Program of Hebei Provincial Administration of Traditional Chinese Medicine,No.2025313 and No.2025448.
文摘BACKGROUND Acquired hemophilia A (AHA) is a rare and potentially severe bleeding disordercaused by circulating autoantibodies against factor Ⅷ (FⅧ). In approximately50% of the patients, the condition is associated with autoimmune diseases,cancers, medication use, pregnancy, and the post-partum period. Bullous pemphigoid(BP) is a chronic autoimmune subepidermal blistering disease associatedwith tissue-bound and circulating autoantibodies against BP antigens 180 (BP180)and 230 (BP230). AHA-associated BP has a high mortality rate;hence, the understandingof this disease must improve.CASE SUMMARY A 69-year-old man presented with erythema, blisters, blood blisters, and crustsaccompanied by severe pruritus for more than 20 days, and ecchymosis andswelling on his left upper arm for 3 days. Pathological examination revealed asubepidermal blister that contained eosinophils. Laboratory tests showed that theBP180 autoantibody levels had increased, isolated activated partial thromboplastintime was notably prolonged (115.6 s), and coagulation FⅧ activity wasextremely low (< 1.0%). Furthermore, the FⅧ inhibitor titer had greatlyincreased (59.2 Bethesda units). Therefore, the patient was diagnosed as having BP associated with AHA, prescribed 0.05% topical halometasone cream, and transferred to a higher-level hospitalfor effective treatment;however, he died after 2 days.CONCLUSION AHA associated BP is rare, dangerous, and has a high mortality rate. Therefore, its timely diagnosis and effectivetreatment are necessary.
基金Traditional Chinese Medicine Research Program of Hebei Provincial Administration of Traditional Chinese Medicine,No.2022465.
文摘BACKGROUND Langerhans cell histiocytosis(LCH)is a rare clonal proliferative disease of Langerhans cells with unknown pathogenesis.An increasing number of clinicians recognize that LCH has a wide clinical spectrum and a highly varied course.Adults rarely develop LCH.Here,we report a case of adult localized LCH.CASE SUMMARY A 32-year-old woman presented with plaques and ulcers on the vulva and crissum,accompanied by pain that persisted for more than one year.Physical examination revealed a red-infiltrating plaque with ulcerations and exudates in the vulva and crissum.Pathological examination revealed a diffuse infiltration of lymphocytes,eosinophilic granulocytes,and histiocytoid cells in the superficial dermis.Proliferative histiocytoid cells showed mild atypia,partly with kidneyshaped nuclei.Immunohistochemical examination showed that the histiocytoid cells were positive for S100 protein and CD1 and weakly positive for CD68(20%+),with a Ki-67 index of 30%.Laboratory tests did not reveal any other systemic damage.The patient was diagnosed with adult localized LCH and was prescribed oral prednisone(20 mg)once daily.The skin lesions gradually improved and are still being followed-up.CONCLUSION Adult localized LCH is rare and must be differentiated from other common conditions.
