Sacrococcygeal RegionGastrointestinal Stromal TumorsCoccyxSex Cord-Gonadal Stromal TumorsPilonidal SinusOvarian NeoplasmsGranulosa Cell TumorSacrumTeratomaChordomaSertoli Cell TumorStromal CellsProto-Oncogene Proteins c-kitPerforator FlapGastrointestinal NeoplasmsThecomaSpinal NeoplasmsBenzamidesPiperazinesPyrimidinesReceptor, Platelet-Derived Growth Factor alphaTumor Markers, BiologicalNeoplasms, Germ Cell and EmbryonalSpinal CordCalbindin 2Cell Line, TumorFetal DiseasesTumor BurdenLumbosacral RegionFibrous Dysplasia, MonostoticUterine NeoplasmsImmunohistochemistryTumor Necrosis Factor-alphaNeprilysinAntineoplastic AgentsSpinal Cord InjuriesYohimbineTailVimentinGenes, Tumor SuppressorMesenchymomaUltrasonography, PrenatalCystadenomaEndometrial Stromal TumorsWilms TumorNeoplasms, ExperimentalMutationMART-1 AntigenS100 Calcium Binding Protein GCarcinoid TumorNeoplasms, Multiple PrimaryTumor Suppressor Protein p53Cystadenocarcinoma, SerousCell ProliferationTumor MicroenvironmentSarcoma, Endometrial StromalNephroma, MesoblasticNeoplasm MetastasisAdenocarcinomaTomography, X-Ray ComputedCystadenocarcinoma, MucinousDuodenal NeoplasmsNeoplasm ProteinsTumor Suppressor Proteins