Intrathoracic solitary fibrous tumor a report of

Authors: Haiquan Yao Zhibin Hu Heshui Shi Hongping Lin

Publish Date: 2012/11/14

Volume: 11, Issue: 11, Pages: 660-664

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Abstract

The clinical imaging and pathological data of three intrathoracic SFTs confirmed by surgical pathology were analyzed retrospectively There three cases all received spiral CT plain scan and enhanced scan among which two multiplanar reformation MPR and one MR plain scan And literatures were reviewed to investigate the imaging findings of intrathoracic SFTThe three intrathoracic SFT located at intrapulmonary oblique fissure pleura and posterior chest wall visceral pleura respectively All were solitary masses One case was a peripheral lung mass at dorsal segment of left lower lobe which CT plain scan showed as a soft tissue mass well circumscribed enhanced scan showed that there were enhanced clustered lineal small vascular signs in the mass during arterial phase delayed scanning displayed that the mass showed heterogeneous enhancement and parts of solid content showed gradual enhancement and there were shorter T1 signals on MRI T1WI maplike highlow mixed signals on T2WI mainly with short T2 signals One case was an oblique fissure mass which plain scan showed as a homogeneous soft tissue mass with oval in shape and smooth edge and enhanced scan showed moderate homogeneous enhancement One case was a mass localized at posterior chest wall visceral pleura which CT plain scan showed as a heterogeneous mass and enhanced scan showed that there was slight ringlike enhancement large nonenhancing necrosis area in the mass and facing vessels in the vicinity region All these three cases had no hilar and mediastinal lymphadenectasis Operation and pathology results showed that the mass was well circumscribed with capsule or false capsule Under microscope tumor cells were long fusiform presenting bundle turbulence or irregular arrangement Hypocellular and hypercellular area appeared alternately with interspersed coarse scarlike collagen fibers with hyalinization There were hemangiopericytomalike structures under parts of visual fields There were bronchiole and alveolar epithelium in the legion at dorsal segment of left lower lobe in one case The results of immunohistochemistry showed that the expressions of CD34 or CD99 Bcl2 and vimentin were all strong positive

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