CASE REPORT: SQUAMOUS CELL CARCINOMA AND SPINDLE CELL SARCOMA (SCS) ARISING IN A MATURE CYSTIC TERATOMA OF THE OVARY

Case report: Squamous cell carcinoma and spindle cell sarcoma (SCS) arising in a mature cystic teratoma of the ovary

ObjectiveMalignant transformation of mature ovarian teratoma is a rare phenomenon, mainly occurring in postmenopausal period.Squamous cell carcinoma accounts for 80% of all malignant transformations.Sarcoma transformation is much less common and tends to imply a poorer prognosis and aggressiveness.Case reportWe report a case of undifferentiated sar

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Investigation of 7075 aluminum alloy TIG welding joint using 7075 aluminum alloy wire before and after heat treatment

7075 aluminum alloy butt welding was carried out by TIG welding with self-made 7075 wire.The effects of different currents on the microstructure and mechanical properties of the joint before and after heat treatment were studied.Before heat treatment, the strength and elongation of the joint are 274.84 MPa and 6.3%, which are determined by the pres

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Research on sea reconnaissance and early warning position configuration of copyright-based early warning aircraft

In order to improve the search ability of copyright-based early warning aircraft to enemy surface ships and ensure the safe and continuous tracking, monitoring and early warning of copyright-based early warning aircraft, a method for reconnaissance and early warning position configuration of copyright-based early warning aircraft for sea surface ta

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