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Tumor

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  • hepatoblastoma
    16 March 2004

    hepatoblastomas
    Definition: Hepatoblastoma is a malignant embryonal liver tumor that occurs almost exclusively in infants and very young children.
    Image
    Macroscopy : https://twitter.com/DraEosina/status/762631086207893506
    Cytology: https://twitter.com/AdamGomezMD/status/720632495671087104
    https://twitter.com/MArnold_PedPath/status/736000944303808512
    Hepatoblastoma is composed of epithelial and mesenchymal elements in varying proportions and at various stages of differentiation. The (...)

  • hydatiform mole
    28 April 2004

    molar gestation; hydatiform moles WKP
    Images
    partial hydatiform mole by Ed Euthman
    complete hydatiform mole https://twitter.com/luishcruzc/status/738155933801418752 https://twitter.com/KUSAURAP/status/778827207976230916
    Definition: Hydatiform mole is a gestational trophoblastic disorder.
    Accurate diagnosis and classification of hydatidiform mole (HM) are important because the risk of persistent gestational trophoblastic disease, including choriocarcinoma, is significantly (...)

  • actinic keratosis
    6 July 2004

    solar keratosis, senile keratosis, pre-epitheliomatous keratosis WKP
    Digital cases
    UI:906 - Actinic keratosis.
    UI:917 - Actinic keratosis.
    UI:1826- Actinic keratosis.
    JRC:10567 : Actinic keratosis.
    JRC:10569 : Actinic keratosis.
    Definition: Actinic keratosis is a premalignant condition of thick, scaly, or crusty patches of skin
    It is more common in fair-skinned people and it is associated with those who are frequently exposed to the sun, as it is usually accompanied by (...)

  • collagenoma
    13 June 2006

    Definition: Collagenomas (connective tissue nevi of collagen type) are rare hamartomas of the skin in which there is an increase in dermal collagen.
    Macroscopy
    Collagenomas usually present as asymptomatic, firm, flesh-colored plaques and nodules, 0.5–5.0 cm in diameter, on the trunk and upper part of the arms. The ear, sole of the foot, and vulva are rare sites of involvement.
    There may be several lesions or up to a hundred or more, with an onset in adolescence.
    Eruptive collagenomas (...)

  • colorectal adenoma
    12 May 2004

    colorectal adenomas
    Definition: Adenomas, the benign glandular neoplasms that precede colon cancer development, originate from the intestinal epithelium. They occur singly or multiply. When multiple, the patients may have a genetic predisposition syndrome for colorectal cancer.
    See also : colorectal adenoma with adenocarcinoma
    Endoscopy
    Small (< 5 mm) colorectal polyps commonly affect individuals older than 50 years of age and adenomas account for 60% to 66% ofthese small lesions. (...)

  • mammary fibroadenoma
    18 January 2005

    breast fibroadenoma, Benign cystosarcoma phyllodes, Cellular fibroadenoma, Cellular adenofibroma, Fetal fibroadenoma, Juvenile adenofibroma; mammary fibroadenoma PO Webpathology BP
    Definition : The mammary fibroadenoma is a benign mammary biphasic tumor with epithelial and stromal components.
    It is a benign breast lesion that result from hyperplasia of the normal lobules.
    It is a circumscribed, often large, breast mass usually occuring in adolescent females with stromal and (...)

  • papillary thyroid carcinoma
    15 March 2004

    TPC; PTC; thyroid papillary carcinoma
    Types
    classic PTC / classic papillary thyroid carcinoma
    FV-PTC / follicular variant of papillary thyroid carcinoma
    IFV-PTC / infiltrative FV-PTC
    EFV-PTV / encapsulated FV-PTC
    IEFV-PTC / invasive encapsulated FV-PTC
    NIEFV-PTC / non-invasive encapsulated FV-PTC
    Images
    typical papillary thyroid carcinoma
    https://twitter.com/nisspath/status/695415489837674496
    FNA of papillary thyroid carcinoma (...)

  • fibrous hamartoma of infancy
    10 March 2006

    juvenile fibrous hamartoma, infantile fibrous hamartoma
    Definition: Fibrous hamartoma of infancy is an uncommon fibroproliferative lesion of the subcutaneous tissue that is present at birth or develops in the first 2 years of life.
    Digital slides
    HPC:21 (HPC:21)
    HPC:65 (HPC:65)
    HPC:152 (HPC:152) : Fibrous hamartoma of infancy
    HPC:137 (HPC:137)
    HPC:65 (HPC:65)
    JRC:106 : Fibrous hamartoma of infancy
    Images
    Fibrous hamartoma of infancy (...)

  • schwannoma
    8 March 2004

    schwannomas; neurilemmoma
    Definition: Schwannomas are benign peripheral nerve sheath tumors believed to be composed purely of cells with ultrastructural features of Schwann cells.
    Images
    Macroscopy
    https://twitter.com/RoshanNasim/status/854390780533686272
    Schannoma
    https://twitter.com/histiocytosisX/status/725342882740244480
    ectatic vessels with vascular parietal hyalinization is a common feature in schwannoma
    https://twitter.com/DCSkipperDO/status/753792588331749377
    Digital (...)

  • hidradenomas
    20 June 2007

    acrospiroma, from akral "peripheral" + spiroma "epithelial tumor of sweat gland"; hidradenoma; Cystadenoma, Hydrocystadenomas; eccrine acrospiroma WP PO
    Definition: Hidradenoma refers to a benign adnexal tumor of the apical sweat gland.
    Images
    solid-cystic hidradenoma https://twitter.com/angeldeoromx/status/718257638526619654 https://twitter.com/JMGardnerMD/status/832953323749793793
    These are 1-3 cm translucent blue cystic nodules.It usually presents as a single, small (...)

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