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  1. 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

  2. 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

  3. Herpes Lesion

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

  4. 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

  5. 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

  6. 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

  7. 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

  8. Gynecomastia

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    Description: Gynecomastia, young male
    Keywords: Breast, male

  9. Dermatology: Acral Junctional Lentiginous Nevus

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    Description: A photograph of a benign, circumscribed mole found on the sole of the foot that is formed at the junction between the epidermal and dermal layers of the skin.
    Keywords: ALN, acral, skin, melanocyte, epidermis, Skin Neoplasms, distal limb, hyperplasia, junctional nevus, foot, acral lentiginous nevus, dermis

  10. Dermatology: Basal Cell Carcinoma

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    Description: Basal Cell Carcinoma. Note pearly papules with telangiectasia and crusting. A malignant skin neoplasm that seldom metastasizes but has potentialities for local invasion and destruction. Clinically it is divided into types: nodular, cicatricial, morphaic, and erythematoid (pagetoid). They develop on hair-bearing skin, most commonly on sun-exposed areas. Approximately 85% are found on the head and neck area and the remaining 15% on the trunk and limbs. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1471)
    Keywords: crusting, redness, Pigmented, telangectasia, papules, malignant neoplasm, Carcinoma, Basal Cell, telangiectasia