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Related Concept Videos

Self-Presentation01:25

Self-Presentation

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Self-presentation is a fundamental aspect of social interaction, shaping both how others perceive individuals and how they view themselves. This dynamic process influences behaviors in various social settings, often leading people to adjust their appearance, speech, and demeanor to align with their desired identity. While self-presentation can be deliberate or unconscious, it plays a critical role in interpersonal relationships and self-perception.Forms of Self-PresentationSelf-presentation can...
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People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about...
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Strategic self-presentation refers to individuals' intentional efforts to influence how others perceive them. This process is employed in various social and professional settings, such as job interviews, dating, politics, and legal contexts, where individuals seek to shape impressions to gain social or material advantages. While people generally present themselves in ways that align with their authentic characteristics, external factors, such as cognitive load, can hinder their ability to...
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Diffusion01:12

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Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
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Diffusion01:21

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Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
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Processes of Self-Presentation01:29

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Effective self-presentation is a central component of social interaction and identity construction. It relies on the dynamic processes of defining the situation and engaging in self-disclosure. These mechanisms help individuals navigate social context expectations and manage how others perceive them, fostering mutual understanding and relationship development.Defining the SituationSocial situations are shaped by collectively understood frames—a set of widely understood rules or...
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Related Experiment Video

Updated: Feb 3, 2026

Human Neuroendocrine Tumor Cell Lines as a Three-Dimensional Model for the Study of Human Neuroendocrine Tumor Therapy
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Diffuse Pancreatic Neuroendocrine Tumor: A Rare Presentation.

Peeyush Bhargava1, Kabiul Haque1, Zhiyun Yang1

  • 1Department of Radiology, Division of Nuclear Medicine, LSU Health, Shreveport, LA, USA.

Indian Journal of Nuclear Medicine : IJNM : the Official Journal of the Society of Nuclear Medicine, India
|November 3, 2018
PubMed
Summary

Diffuse pancreatic neuroendocrine tumors are rare. This study reports the appearance of diffuse pancreatic neuroendocrine tumors on an Indium-111 pentetreotide scan, correlating imaging findings with histopathology.

Keywords:
In-111 pentetreotideneuroendocrinepancreas

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Area of Science:

  • Oncology
  • Nuclear Medicine
  • Radiology

Background:

  • Neuroendocrine tumors (NETs) can affect the pancreas, but diffuse involvement is uncommon.
  • The diagnostic imaging of diffuse pancreatic neuroendocrine tumors (PNETs) remains challenging.
  • The utility of Indium-111 pentetreotide scintigraphy for diffuse PNETs has not been previously documented.

Purpose of the Study:

  • To describe the imaging characteristics of diffuse pancreatic neuroendocrine tumors using Indium-111 pentetreotide scintigraphy.
  • To correlate findings from Indium-111 pentetreotide scans with contrast-enhanced computed tomography (CECT) and histopathology.
  • To highlight a rare presentation of pancreatic neuroendocrine tumors.

Main Methods:

  • A case of diffuse pancreatic neuroendocrine tumor was evaluated.
  • Whole-body imaging was performed using Indium-111 pentetreotide scan.
  • Contrast-enhanced computed tomography (CECT) and histopathological examination were used for correlation.

Main Results:

  • The Indium-111 pentetreotide scan demonstrated diffuse uptake throughout the pancreas, consistent with the tumor involvement.
  • CECT revealed diffuse pancreatic enlargement and ill-defined lesions.
  • Histopathology confirmed the presence of diffuse neuroendocrine tumor infiltration of the pancreas.

Conclusions:

  • Indium-111 pentetreotide scintigraphy can visualize diffuse pancreatic neuroendocrine tumors.
  • This imaging modality, alongside CECT and histopathology, aids in the diagnosis of this rare presentation.
  • The findings contribute to the understanding of imaging in diffuse PNETs.