- Colon nontumor > Colitis (non-infectious) > Anti-PD1 associated colitis by Maryam Kherad Pezhouh, M.D., M.Sc.
- Nasal cavity, paranasal sinuses, nasopharynx > Other tumors > Olfactory neuroblastoma by Bin Xu, M.D.
- Small bowel (small intestine) > Miscellaneous > Staging - neuroendocrine tumors by Raul S. Gonzalez, M.D.
- Soft tissue > Other tumors > Synovial sarcoma by Farres Obeidin, M.D., Senior Author: Boris Alexiev, M.D.
- Stains > Cytokeratin 7 (CK7, K7) by Brandon Umphress, M.D. and Kruti P. Maniar, M.D.
- Stomach > Miscellaneous > TNM staging of neuroendocrine tumors of the stomach (AJCC 8th edition) by Raul S. Gonzalez, M.D.
We have added new images to the following topics:
- Parasitology > Gastrointestinal (not liver) > Whipworm additional text and images contributed by Bobbi Pritt, M.D.