Ji Yeon Lee

Pregnancy induces a hypercoagulable state, elevating thrombosis risk by 5–6 times compared to non‐pregnant conditions. Predominantly affecting the left lower extremity due to anatomical and hematological factors, deep vein thrombosis can escalate into pulmonary embolism, impacting mortality. The authors aim to report rare incidents of thrombosis beyond the norm, including upper extremity vein thrombosis, right ovarian vein thrombosis, and portal vein and superior mesenteric vein thrombosis, highlighting their significance. Obstetricians should be mindful that thrombosis can occur not only in the lower extremities but also in other areas. Especially when symptoms such as fever unresponsive to antibiotics, atypical pain, and an abnormally high C‐reactive protein level are present. Considering the possibility of a rare thrombosis is crucial. Understanding these less common thrombotic events during pregnancy and the postpartum period can contribute to the improvement of timely diagnosis and management strategies.