Radiologic Examination

A Study to Find the Highest Dose of SNDX-5613 (Revumenib) as a Treatment Option After Hematopoietic Stem Cell Transplant in Children With Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, and Mixed Phenotype Acute Leukemia

Targeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)

Testing Crizotinib as Potentially Targeted Treatment in Cancers With MET Exon 14 Deletion Genetic Changes (MATCH - Subprotocol C2)

Testing Copanlisib as Potentially Targeting Treatment in Cancers With PTEN Loss (MATCH - Subprotocol Z1G)

Testing Trastuzumab and Pertuzumab in Patients With Higher Than Normal Copies of the HER2 Gene Found in Their Tumors (MATCH - Subprotocol J)

Testing AZD9291 as Potentially Targeted Treatment in Cancers With EGFR Genetic Changes (MATCH-Subprotocol E)

Testing Crizotinib as Potentially Targeted Treatment in Cancers With MET Genetic Changes (MATCH - Subprotocol C1)

Elastic Nail Versus Screw for Intramedullary Fixation of Displaced Fractures of the Fifth Metacarpal Neck

Value of Ultrasound and Computed Tomography in the Diagnosis of Acute Appendicitis With Histopathology as Gold Standard.