How unfortunate that there are so many categories. This is the list and all the many abstracts are available.
Breast Cancer - HER2/ER
ER+
HER2+
Prevention
Breast Cancer - Triple-negative/Cytotoxics/Local Therapy
Cytotoxic Chemotherapy
Local Therapy
Triple Negative Breast Cancer
Cancer Prevention/Epidemiology
Cancer Genetics
Cancer Prevention
Epidemiology
Central Nervous System Tumors
CNS Tumors
Developmental Therapeutics - Clinical Pharmacology and Immunotherapy
Clinical Trial Design
Cytotoxic Agents
Immunotherapy and Biologic Therapy
Nanotechnology
Other
Pharmacology
Viral Therapy
Developmental Therapeutics - Experimental Therapeutics
Angiogenesis
Cancer Stem Cell Pathway
Cell Cycle and Checkpoints
DNA Repair and Apoptosis
Epigenetics
New Targets, New Technologies
Nuclear Serine-Threonine Kinases
Other Novel Agents
PI3-Akt-mTOR Pathway
Signal Transduction
Ubiquitin-related Pathway
Gastrointestinal (Colorectal) Cancer
Colorectal Cancer
Gastrointestinal (Noncolorectal) Cancer
Esophageal, Gastric, or Small Bowel
Hepatobiliary Cancer
Other GI Cancer
Pancreatic Cancer
Genitourinary Cancer
Bladder Cancer
Germ Cell/Testicular
Kidney Cancer
Other GU Cancer
Prostate Cancer
Gynecologic Cancer
Other Cancer
Ovarian Cancer
Uterine Cancer
Head and Neck Cancer
Head & Neck Cancer
Health Services Research
Health Services Research
Outcomes Research
Practice Management/Professional Issues
Leukemia, Myelodysplasia, and Transplantation
Allogeneic Bone Marrow
Autologous Bone Marrow
Leukemia
Myeloproliferative Syndromes
Other
Lung Cancer - Local-Regional and Adjuvant Therapy/Small Cell
Adjuvant Therapy
Local-Regional Therapy
Lung Cancer - Metastatic/Non-small Cell
Metastatic
Lymphoma and Plasma Cell Disorders
Lymphoma
Multiple Myeloma
Plasma Cell Disorders
Stem Cell Support
Melanoma/Skin Cancers
Melanoma
Patient and Survivor Care
Cancer in Older Patients
Cancer-Related Complications
End-of-Life Care
Other
Palliative Care
Quality of Life Mgmt
Supportive Care
Pediatric Oncology
Leukemia/Lymphoma
Other
Pediatric Solid Tumors
Sarcoma
Bone Tumors
Ewing's Sarcoma
GIST
Other
Soft Tissue
Tumor Biology
Immunobiology
Molecular Diagnostics and Staging
Molecular Targets
Other
Prognostic Factors
Radiation Biology
Tumor/Cell Biology
http://abstract.asco.org/ConfCatView_102.html
Breast Cancer - HER2/ER
ER+
HER2+
Prevention
Breast Cancer - Triple-negative/Cytotoxics/Local Therapy
Cytotoxic Chemotherapy
Local Therapy
Triple Negative Breast Cancer
Cancer Prevention/Epidemiology
Cancer Genetics
Cancer Prevention
Epidemiology
Central Nervous System Tumors
CNS Tumors
Developmental Therapeutics - Clinical Pharmacology and Immunotherapy
Clinical Trial Design
Cytotoxic Agents
Immunotherapy and Biologic Therapy
Nanotechnology
Other
Pharmacology
Viral Therapy
Developmental Therapeutics - Experimental Therapeutics
Angiogenesis
Cancer Stem Cell Pathway
Cell Cycle and Checkpoints
DNA Repair and Apoptosis
Epigenetics
New Targets, New Technologies
Nuclear Serine-Threonine Kinases
Other Novel Agents
PI3-Akt-mTOR Pathway
Signal Transduction
Ubiquitin-related Pathway
Gastrointestinal (Colorectal) Cancer
Colorectal Cancer
Gastrointestinal (Noncolorectal) Cancer
Esophageal, Gastric, or Small Bowel
Hepatobiliary Cancer
Other GI Cancer
Pancreatic Cancer
Genitourinary Cancer
Bladder Cancer
Germ Cell/Testicular
Kidney Cancer
Other GU Cancer
Prostate Cancer
Gynecologic Cancer
Other Cancer
Ovarian Cancer
Uterine Cancer
Head and Neck Cancer
Head & Neck Cancer
Health Services Research
Health Services Research
Outcomes Research
Practice Management/Professional Issues
Leukemia, Myelodysplasia, and Transplantation
Allogeneic Bone Marrow
Autologous Bone Marrow
Leukemia
Myeloproliferative Syndromes
Other
Lung Cancer - Local-Regional and Adjuvant Therapy/Small Cell
Adjuvant Therapy
Local-Regional Therapy
Lung Cancer - Metastatic/Non-small Cell
Metastatic
Lymphoma and Plasma Cell Disorders
Lymphoma
Multiple Myeloma
Plasma Cell Disorders
Stem Cell Support
Melanoma/Skin Cancers
Melanoma
Patient and Survivor Care
Cancer in Older Patients
Cancer-Related Complications
End-of-Life Care
Other
Palliative Care
Quality of Life Mgmt
Supportive Care
Pediatric Oncology
Leukemia/Lymphoma
Other
Pediatric Solid Tumors
Sarcoma
Bone Tumors
Ewing's Sarcoma
GIST
Other
Soft Tissue
Tumor Biology
Immunobiology
Molecular Diagnostics and Staging
Molecular Targets
Other
Prognostic Factors
Radiation Biology
Tumor/Cell Biology
http://abstract.asco.org/ConfCatView_102.html