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Related Concept Videos

Skin Cancer01:30

Skin Cancer

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Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
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Updated: Jun 10, 2025

Combining Reflectance Confocal Microscopy with Optical Coherence Tomography for Noninvasive Diagnosis of Skin Cancers via Image Acquisition
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Diagnosing Common Benign Skin Tumors.

Joy Shen-Wagner1, Joel Amidon1, Stephen Carek1

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Summary
This summary is machine-generated.

Dermatologists must differentiate benign skin tumors from malignant ones. Prompt biopsy or excision is crucial for uncertain or rapidly changing lesions, guiding appropriate treatment for various skin conditions.

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Area of Science:

  • Dermatology
  • Oncology
  • Primary Care Medicine

Background:

  • Patients frequently present with skin findings to family physicians.
  • Distinguishing benign from potentially malignant skin tumors is critical for patient management.
  • Benign skin tumors often have characteristic histories, distributions, and morphology.

Purpose of the Study:

  • To provide guidance on differentiating common benign skin tumors from malignant neoplasms.
  • To outline diagnostic criteria and indications for biopsy or excision.
  • To review treatment options for various benign skin lesions.

Main Methods:

  • Review of clinical presentations, diagnostic features, and treatment modalities for common skin tumors.
  • Emphasis on differentiating challenging cases, such as keratoacanthoma from squamous cell carcinoma.
  • Consideration of patient-specific factors like skin type and cosmetic preferences.

Main Results:

  • Keratoacanthomas, rapidly growing pilar cysts, and dermoid cysts often require excision.
  • Cherry angiomas and sebaceous hyperplasia are treated with laser therapy and electrodesiccation, respectively.
  • Atypical presentations of dermatofibromas and seborrheic keratoses necessitate differentiation from melanoma.

Conclusions:

  • Accurate diagnosis of skin lesions is essential for appropriate treatment.
  • Treatment should be individualized based on lesion characteristics and patient factors.
  • Awareness of potential mimicry between benign and malignant lesions is crucial for family physicians.