This article discusses the role played by narrative process as a constituent element of clinical practice. The research is based on how physicians who are finishing their residency in Pediatrics understand Medical Semiology as a fundamental structure for developing clinical reasoning. The doctors revealed awareness of the importance of their medical knowledge and clinical experience; hearing, observing and examining patients to improve their "clinical eye", which according to their statements, goes beyond touch and sight, referring to listening and reflexively ordering, in time and space, the events of the health-illness process. None of the interviewees demonstrated absolute illusion that technological resources could independently reveal the state of health or illness of patients. We found that, although doctors make use of an epistemological-based narrative of medical knowledge, they are not aware of such.