title: Endoscopic biopsy for LDH pattern.
mesh_terms: D001706:Biopsy / Q000379:methods*; D004796:Clinical Enzyme Tests / Q000379:methods*; D004724:Endoscopy / Q000379:methods*; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D006801:Humans; D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase / Q000378:metabolism*
chemical_list: D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase