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  1. Dermatology: Acanthosis Nigricans, Back Of Neck

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    Description: Acanthos nigricans is a circumscribed melanosis consisting of a brown-pigmented, velvety verrucosity or fine papillomatosis appearing in the axillae and other body folds. It occurs in association with endocrine disorders, underlying malignancy, administration of certain drugs, or as an inherited disorder.
    Keywords: skin pigment, melanosis, back of neck, darkened skin, velvet, folds

  2. Malar "Butterfly" Rash

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    Description: Malar rash, characteristic of systemic lupus erythematosus (SLE)
    Keywords: Systemic Lupus Erythematosus, lupus, Lupus Erythematosus Disseminatus, Libman-Sacks Disease, butterfly rash, skin rash, facial rash, malar rash, Lupus Vasculitis, Central Nervous System, rash

  3. Colonoscopy, Adenocarcinoma

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    Description: The image on the left demonstrates numerous adenomas (> 100 observed during the colonoscopy). The image on the right (yellow arrows) is suspicious for colon cancer and was biopsied. Summary of Pathology Report: Moderately differentiated adenocarcinoma with focal mucinous adenocarcinoma differentiation. Adenocarcinoma is a cancer of an epithelium that originates in glandular tissue. Epithelial tissue includes, but is not limited to, the surface layer of skin, glands, and a variety of other tissue that lines the cavities and organs of the body. Epithelium can be derived embryologically from ectoderm, endoderm or mesoderm. To be classified as Adenocarcinoma, the cells do not necessarily need to be part of a gland, as long as they have secretory properties. Well differentiated adenocarcinomas tend to resemble the glandular tissue that they are derived from, while poorly differentiated adenocarcinomas may not. By staining the cells from a biopsy, a pathologist can determine whether the tumor is an adenocarcinoma or some other type of cancer. Adenocarcinomas can arise in many tissues of the body due to the ubiquitous nature of glands within the body. While each gland may not be secreting the same substance, as long as there is an exocrine function to the cell, it is considered glandular and its malignant form is therefore named adenocarcinoma. Endocrine gland tumors, such as a VIPoma, an insulinoma, a pheochromocytoma, etc., are typically not referred to as adenocarcinomas, but rather, are often called neuroendocrine tumors. If the glandular tissue is abnormal, but benign, it is said to be an adenoma. Benign adenomas typically do not invade other tissue and rarely metastasize. Malignant adenocarcinomas invade other tissues and often metastasize given enough time to do so.
    Keywords: Condylomata Acuminata, Cancer, epithelium

  4. Herpes Lesion

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    Description: Herpes lesion
    Keywords: Blister, skin, disease, Virus

  5. Breast Cancer, HER2 Negative

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    Description: HER2 negative breast cancer
    Keywords: Cancer of Breast, Neoplasms, Breast, Malignant Neoplasm of Breast, Diagnosis, Mammary Carcinoma, Human, Tumors, Breast, Mammary Neoplasms, Human, Mammary Cancer, Breast Cancer, Cancer of the Breast, Breast Tumors, Breast Carcinoma, Mammary Neoplasm, Human, Human Mammary Carcinoma, Malignant Tumor of Breast

  6. Palmar Erythema, Left Hand

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    Description: Palmar erythema, left hand Plamar erythema is an inflammatory redness of the palms of the hands.
    Keywords: hands, skin, Inflammation, redness, palms

  7. Palmar Erythema, Both Hands

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    Description: Palmar erythema, both hands an inflammatory redness of the palms of the hands.
    Keywords: redness, Inflammation, palms, hands, skin

  8. Gynecomastia, Older Male

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    Description: Enlargement of the breast in the males, caused by an excess of estrogens. Physiological gynecomastia is normally observed in newborns; adolescent; and aging males.
    Keywords: Breast, male

  9. Gynecomastia

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    Description: Gynecomastia, young male
    Keywords: Breast, male

  10. Eczema Herpeticum, Pediatric Emergency, Image 1

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    Description: Eczema herpeticum is a generalized vesiculopustular rash caused by herpes simplex virus or vaccinia virus infection of a preexisting rash such as atopic dermatitis. Also called Kaposi's varicelliform eruption.
    Keywords: virus, Kaposi Varicelliform Eruption, rash, Papular eruption