Tumor

Articles

• 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. (...)

• thyroid follicular adenoma
  14 December 2005

  Definition: A benign, encapsulated tumour of the thyroid showing evidence of follicular differentiation.
  Images
  Wikimedia : Follicular adenoma
  Digital cases (Digital slides)
  HPC:395 : Thyroid follicular adenoma with papillary epithelial hyperplasia.
  JRC:2612 : Thyroid atypical follicular adenoma, thyroid Spindle cell and follicular neoplasm.
  JRC:14584 : Thyroid follicular adenoma, clear cell type.
  JRC:15430 : Thyroid follicular adenoma (with pseudoclear).
  Follicular adenoma is (...)

• 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 (...)

• ovarian serous cystadenoma
  2 November 2004

  Synopsis
  benign ovarian cystic tumors
  75% unilateral / 25% bilateral
  smooth glistening cyst wall
  papillary tumors have papillary projections on outer surface or protruding into cystic cavity
  single layer of tall, columnar, ciliated cells resembling normal tubal epithelium;
  stroma contains spindly fibroblasts;
  no atypia
  no architectural complexity
  no invasion
  See also
  ovarian cysts ovariam cystadenomas
  ovarian (...)

• clear cell sarcoma of the kidney
  14 July 2004, by JA

  CCSK, renal clear cell sarcoma; bone-metastasizing renal tumour of childhood AGCOH PathConsult eMedicine
  Digital slides
  Case 66 (HPC:66) : Clear cell sarcoma of the kidney (CCSK)
  Definition: Clear cell sarcoma of the kidney (CCSK) is a malignant renal tumor of childhood with a propensity to metastasize to bone and other organs. CCSK is linked to internal tandem duplications (ITDs) of the BCOR gene.
  This tumor may also recur many years after its initial diagnosis. The average age (...)

• tendon sheath fibroma
  13 June 2003

  fibroma of tendon sheath
  Digital slides
  JRC:6487 : Fibroma of tendon sheath.
  Definition: Fibroma of the tendon sheath is a rare tumor described as a benign lesion or a tumor-like reactive lesion arising from the synovium of tendon sheath.
  Fibroma of the tendon sheath occurs in both adults and children, with 20% of cases occurring in children and adolescents. These lesions most commonly affect the fingers, hand, and wrist, with thumb involvement in as many as 41% of patients.
  Deeply (...)

• 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 (...)

• Wilms tumor
  14 November 2003

  nephroblastoma

• halo nevus
  5 July 2004

  Compound nevus with halo reaction

• salivary mucoepidermoid carcinoma
  8 March 2004

  salivary gland mucoepidermoid carcinoma PO WKP WP
  Definition: The mucoepidermoid carcinoma is the most common malignant neoplasm observed in the major and minor salivary glands.
  Mucoepidermoid carcinoma is the most common adult salivary malignancy. It histologically is non-encapsulated and shows three cell types - squamous, mucous and intermediate, and may show prominent oncocytic change. It is associated with t(11;19) fusing MECT1 and MAML2 (MAML2-MECT1 fusion gene).
  Images
  Small (...)

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