A Case of Myeloid Neoplasm with a PDGFRB Rearrangement and Eosinophilia / 대한내과학회지

Myeloid neoplasia with eosinophilia and platelet-derived growth factor receptor beta (PDGFRB) rearrangements is an uncommon Philadelphia-negative myeloproliferative neoplasm. Their most common morphological diagnosis is chronic myelomonocytic leukemia with eosinophilia, which is associated with t(5;12)(q33;p13) and results in the formation of the ETV6-PDGFRB fusion gene. Here, we report a 49-year-old man with a myeloid neoplasm with a PDGFRB rearrangement, who was incidentally diagnosed with hyperleukocytosis and eosinophilia during a health screening. A chromosome analysis of a bone marrow sample revealed 46, XY, t(5;12)(q33;p13), and fluorescence in situ hybridization analysis revealed the PDGFRB gene rearrangement. The patient was treated with imatinib and subsequently achieved complete hematological and molecular remission.

Hepatic Infarction Caused by Portal Vein Thrombophlebitis Misdiagnosed as Infiltrative Hepatic Malignancy with Neoplastic Thrombus / 대한소화기학회지

Portal vein thrombosis (PVT) is a form of venous thrombosis that usually presents in chronic form without any sequalae in patients with hepatocellular carcinoma (HCC) or liver cirrhosis. Accurate differential diagnosis of bland PVT from neoplastic PVT is an important step for planning treatment options, but the acute form can be challenging. Here we present a case of acute hepatic infarction caused by acute bland PVT combined with pylephlebitis, which was misdiagnosed as infiltrative hepatic malignancy with neoplastic PVT owing to the perplexing imaging results and elevated tumor markers.

A Case of Invasive Pulmonary Aspergillosis with Direct Invasion of the Mediastinum and the Left Atrium in an Immunocompetent Patient / 결핵및호흡기질환

We report a case of invasive pulmonary aspergillosis invading the mediastinum and the left atrium. A 70-year-old woman was hospitalized for dyspnea. She had been well controlled for her diabetes mellitus and hypertension. The chest X-ray disclosed mediastinal widening, and the computed tomography scan of the chest showed that there was a large mediastinal mass and this lesion extended into the left atrium and right bronchus. The cardiac echocardiography showed that a huge mediastinal cystic mass compressed in the right atrium and a hyperechoic polypoid lesion in the left. The pathology from the bronchoscopic biopsy observed abundant fungal hyphae which was stained with periodic acid-Schiff and Gomori's methenamine silver. Despite the treatment with antifungal agents, she died from cardiac tamponade after three months. Invasive pulmonary aspergillosis, which involves the mediastinum and the heart, is very rare in immunocompetent patients.

A Case of Invasive Pulmonary Aspergillosis with Direct Invasion of the Mediastinum and the Left Atrium in an Immunocompetent Patient / 결핵및호흡기질환

We report a case of invasive pulmonary aspergillosis invading the mediastinum and the left atrium. A 70-year-old woman was hospitalized for dyspnea. She had been well controlled for her diabetes mellitus and hypertension. The chest X-ray disclosed mediastinal widening, and the computed tomography scan of the chest showed that there was a large mediastinal mass and this lesion extended into the left atrium and right bronchus. The cardiac echocardiography showed that a huge mediastinal cystic mass compressed in the right atrium and a hyperechoic polypoid lesion in the left. The pathology from the bronchoscopic biopsy observed abundant fungal hyphae which was stained with periodic acid-Schiff and Gomori's methenamine silver. Despite the treatment with antifungal agents, she died from cardiac tamponade after three months. Invasive pulmonary aspergillosis, which involves the mediastinum and the heart, is very rare in immunocompetent patients.