短報
定期的な血小板数測定により診断に至った周期性血小板減少症
2023 年 64 巻 1 号 p. 66-68
詳細
2023 年 64 巻 1 号 p. 66-68
Cyclic thrombocytopenia (CTP) is characterized by periodic platelet count fluctuations and is commonly misdiagnosed as immune thrombocytopenia (ITP) because of their similar clinical characteristics. Here, we present the case of a 74-year-old man with CTP diagnosed by weekly platelet count measurements. The patient initially developed mild bleeding symptoms with a platelet count of 0.8×104/µl. Bone marrow biopsy exhibited reduced megakaryocyte counts, an atypical characteristic of ITP. Weekly follow-up of platelet counts demonstrated an apparent cyclic pattern, resulting in CTP diagnosis. Regular platelet count measurements can help diagnose CTP in thrombocytopenia.
