"Impossible" patients in oncology: Two unusual cases.

Objective: Cancer patients can present with impossible behavior, which can jeopardize their treatment and challenge healthcare professionals' teamwork.
Method: Report of two unusual psychiatric cases, including Munchausen and Peter Pan syndromes, which occurred in a comprehensive cancer center.ResultGuidelines in medical and surgical wards are suggested to address such situations regarding oncologic compliance.Significance of resultsMultidisciplinary collaboration between medical and surgical teams and the psycho-oncologic department is highly recommended.