Tretinoin is a safe and highly effective agent for inducing complete remission in patients with acute promyelocytic leukemia. Clinical response to this agent is associated with leukemic-cell differentiation and is linked to the expression of an aberrant RAR-alpha nuclear receptor. Molecular detection of the aberrant receptor may serve as a useful marker for residual leukemia in patients with this disease.

Postoperative radiotherapy was effective in decreasing locoregional failure in patients with close surgical margins, tumor thicker than 10 mm, high-grade tumors, positive node, and bone invasion. The effect of interval between surgery and postoperative radiotherapy on local failure was margin-dependent.

In situ hybridization with chromosome-specific DNA libraries was used to analyse radiation-induced stable translocations in human peripheral blood lymphocytes. These data were compared with radiation-induced unstable-type aberrations (dicentrics) in the same samples. The results indicate that far more stable aberrations are induced by radiation in comparison to unstable aberrations.

The core pillars of multimodal care of patients with cancer are surgical, radiation, and medical oncology. The global pandemic of coronavirus disease 2019 (COVID-19) has suddenly resurrected a new pillar in oncology care: teleoncology. With oncologists reaching out to patients through telemedicine, it is possible to evaluate and fulfill patients’ needs; triage patients for elective procedures; screen them for influenza-like illness; provide them with guidance for hospital visits, if needed; and bridge oral medications and treatments when a hospital visit is not desirable because of any high risk-benefit ratio. Teleoncology can bring great reassurance to patients at times when reaching an oncology center is challenging, and more so in resource-constrained countries. Evidence-based treatment protocols, dispensable by teleoncology, already exist for many sites of cancer and they can provide a bridge to treatment when patients are unable to reach cancer centers for their standard treatment. The young pillar of teleoncology is going to remain much longer than COVID-19.