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 The sum of the three main sources of background radiation – cosmic, terrestrial and internal – is about 2.4 mSv and is the annual whole-body dose equivalent arising from natural radiation. It must be emphasized that this is a global average dose, which may vary. There are several studies looking into the impact of high background radiation doses on humans and the possible long-term consequences of chronic exposure to such doses.

With respect to man-made radiation, the most significant source of exposure to the public is from medical procedures, which includes diagnostic X-rays, nuclear medicine, and radiation therapy. Medical exposure accounts for the largest radiation exposure to the population, after the natural background radiation. The advances in medical investigations, the important role of prevention through early diagnosis and also the aging population, are all factors leading to an increase in the number of diagnostic procedures. It is, therefore, important to find the balance between radiological exposure and the associated benefit to the patient. In order to reduce the risks of any deleterious effects from medical exposure, this should be limited as much as possible, especially in children, who are more susceptible to radiation-induced adverse events than adults.

(Bezak et al. Johns and Cunningham’s The Physics of Radiology, 2021. Adaptado

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 Effective communication is central to the clinicianpatient encounter. When the patient’s needs and concerns are well understood through a biopsychosocial formulation, then a comprehensive care plan can be mutually agreed on. Communication skills training (CST) has become one vehicle to build skills that optimally advance the clinical agenda, alongside promoting professionalism and excellence of care. Good communication skills have been linked to higher patient satisfaction, greater patient adherence to treatment, better patient health outcomes, fewer physician malpractice claims, reduced patient anxiety, increased recall, and improved understanding.

Patients with cancer report unmet communication needs for information about the extent of disease, prognosis, and treatment options, intent, and adverse effects. This is consistent with earlier studies on communication in clinical encounters. When the clinician is responsive to patients’ needs, their anxiety levels have been significantly reduced.

In this article, we propose the establishment of a universal CST curriculum for fellows of all cancer specialties that builds their professionalism and sustains effective clinician-patient communication throughout their careers.

(https://pmc.ncbi.nlm.nih.gov/articles/PMC3341141/. 06.08.2025. Adaptado)

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   The archetype of the classic witch is a cornerstone of global folklore and fiction, often depicted as a formidable and sinister antagonist. These figures are deeply embedded in collective storytelling, usually characterized by their malevolent intentions towards protagonists, especially innocent children or virtuous heroes. Their narrative role is fundamentally to embody the forces of darkness, chaos, or forbidden knowledge, creating a clear moral contrast and a formidable obstacle for the main characters to overcome. From European fairy tales to modern pop culture, the classic witch serves as a powerful symbol of fear and the supernatural.

    Physically, the traditional witch is frequently described as an old, haggard woman with exaggeratedly ugly features, which visually symbolizes her inner corruption and alienation from societal norms. Common traits include a long, hooked nose, warts, disheveled gray hair, and crooked fingers. She is typically clothed in dark, ragged robes and a pointed, wide-brimmed hat, an image popularized and solidified by Western media. This distinct and fearsome appearance is designed to evoke immediate unease and signal her dangerous nature to the audience.

   The classic witch's power is intrinsically linked to specific magical tools and practices. The bubbling cauldron is her quintessential instrument, used for brewing potent potions, casting spells, and concocting mysterious elixirs. Her magic often involves ancient books ofspells, enchanted mirrors that show more than mere reflections, and the command over supernatural familiars like black cats, crows, or toads. These elements are not just props; they are extensions of her will and the sources of her power, which she uses to curse, transform, or deceive those who cross her path.

This archetype finds vivid expression in some of the most famous villains of literature and film. The Wicked Witch of the West from The Wizard of Oz menaces Dorothy with her command over flying monkeys and her thirst for revenge. The Evil Queen from Snow White, obsessed with being the "fairest of them all," uses a poisoned apple in her deadly scheme. Similarly, Maleficent from Sleeping Beauty is a figure of pure vengeance, cursing an infant princess to a sleep-like death. Beyond Anglo-American tales, other cultures have their own versions, such as Brazil's Cuca, a child-eating alligator-witch from Sítio do Picapau Amarelo.

   However, the portrayal of the witch is not monolithic and has evolved to include more nuanced or comedic figures. In the Mexican sitcom El Chavo del Ocho, Doña Clotilde, nicknamed "La Bruja del 71," is a neighborhood eccentric whose witch persona is more a source of gossip and lighthearted fear than genuine evil. Furthermore, modern narratives like the film Hocus Pocus present the Sanderson sisters as a blend of the classic tropes—complete with spell books and a thirst for youth—but with a comedic and less terrifying demeanor, showcasing the adaptability and enduring fascination with this iconic character type. 

Read the text to answer the question. 

   The archetype of the classic witch is a cornerstone of global folklore and fiction, often depicted as a formidable and sinister antagonist. These figures are deeply embedded in collective storytelling, usually characterized by their malevolent intentions towards protagonists, especially innocent children or virtuous heroes. Their narrative role is fundamentally to embody the forces of darkness, chaos, or forbidden knowledge, creating a clear moral contrast and a formidable obstacle for the main characters to overcome. From European fairy tales to modern pop culture, the classic witch serves as a powerful symbol of fear and the supernatural.

    Physically, the traditional witch is frequently described as an old, haggard woman with exaggeratedly ugly features, which visually symbolizes her inner corruption and alienation from societal norms. Common traits include a long, hooked nose, warts, disheveled gray hair, and crooked fingers. She is typically clothed in dark, ragged robes and a pointed, wide-brimmed hat, an image popularized and solidified by Western media. This distinct and fearsome appearance is designed to evoke immediate unease and signal her dangerous nature to the audience.

   The classic witch's power is intrinsically linked to specific magical tools and practices. The bubbling cauldron is her quintessential instrument, used for brewing potent potions, casting spells, and concocting mysterious elixirs. Her magic often involves ancient books ofspells, enchanted mirrors that show more than mere reflections, and the command over supernatural familiars like black cats, crows, or toads. These elements are not just props; they are extensions of her will and the sources of her power, which she uses to curse, transform, or deceive those who cross her path.

This archetype finds vivid expression in some of the most famous villains of literature and film. The Wicked Witch of the West from The Wizard of Oz menaces Dorothy with her command over flying monkeys and her thirst for revenge. The Evil Queen from Snow White, obsessed with being the "fairest of them all," uses a poisoned apple in her deadly scheme. Similarly, Maleficent from Sleeping Beauty is a figure of pure vengeance, cursing an infant princess to a sleep-like death. Beyond Anglo-American tales, other cultures have their own versions, such as Brazil's Cuca, a child-eating alligator-witch from Sítio do Picapau Amarelo.

   However, the portrayal of the witch is not monolithic and has evolved to include more nuanced or comedic figures. In the Mexican sitcom El Chavo del Ocho, Doña Clotilde, nicknamed "La Bruja del 71," is a neighborhood eccentric whose witch persona is more a source of gossip and lighthearted fear than genuine evil. Furthermore, modern narratives like the film Hocus Pocus present the Sanderson sisters as a blend of the classic tropes—complete with spell books and a thirst for youth—but with a comedic and less terrifying demeanor, showcasing the adaptability and enduring fascination with this iconic character type.