UNASSIGNED: Primary intravascular @entity1352 is a rare malignancy with only a few cases documented in the literature. On presentation, this @entity5 usually resembles a @entity1150 ( @entity1150 ) or @entity1151 ( @entity1151 ). Here, we report the case of a 20-year-old @entity1 complaining of @entity1353 who had a history of @entity1150 6 weeks before presentation at our institution. Vascular ultrasound detected a suspicious mass in the right groin, which was identified as a monophasic @entity1352 by surgical biopsy. The @entity5 extended from the right superficial femoral vein into the common iliac vein, profound femoral vein, and great saphenous vein. It caused @entity1151 with near-total occlusion of the right pulmonary artery. After initial treatment on the cardiac intensive care unit, the @entity1 was referred to the oncology department for neoadjuvant radiochemotherapy with @entity632 - @entity1260 according to the Interdisziplin  re Arbeitsgemeinschaft Weichteilsarkome [ @entity242 ] protocol and surgical resection of the @entity5 . No signs of @entity5 recurrence were found during the subsequent course of the disease, but the @entity1 died from treatment complications approximately 15 months after initial presentation. This case underlines the importance of screening for @entity5 even in young @entity1 presenting with @entity1150 or @entity1151 . We also recommend whole-leg compression ultrasonography in @entity1 with suspected @entity1150 or @entity1151 (as opposed to venography or simple four-point ultrasound examination in the groin and popliteal fossa) to detect possible underlying causes for @entity715 .

A primary intravascular @entity1352 causing @entity1150 and XXXX in a 20-year-old @entity1 .

@entity1 :: ('9606', 'Species') :: ['woman', 'patients', 'patient'] @entity632 :: ('MESH:D004317', 'Chemical') :: ['doxorubicin'] @entity242 :: ('MESH:D012509', 'Disease') :: ['Interdisciplinary AG Sarcomas'] @entity1353 :: ('MESH:D004417', 'Disease') :: ['shortness of breath'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignancies', 'tumour'] @entity1352 :: ('MESH:D013584', 'Disease') :: ['synovial sarcoma'] @entity1151 :: ('MESH:D011655', 'Disease') :: ['pulmonary embolism', 'pe'] @entity1150 :: ('MESH:D020246', 'Disease') :: ['deep venous thrombosis', 'dvt'] @entity1260 :: ('MESH:D007069', 'Chemical') :: ['ifosfamide'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thrombosis']
@entity1151 :: (MESH:D011655,Disease) :: ['pulmonary embolism']
