Macroscopy

Articles

• necrosis
  9 November 2004

  tissular death

• Mycobacterium avium intracellulare
  20 July 2007

  Mycobacterium Avium-Intracellulare Complex
  Definition: Mycobacterium avium (which includes three subspecies) and Mycobacterium intracellulare are separate species, but the infections they cause are so similar that they are simply referred to as Mycobacterium avium-intracellulare complex, or MAC.
  Images
  hepatic MAI infection
  https://twitter.com/GIPathologyURMC/status/765234005474181120
  Mycobacterium avium complex enteritis
  https://twitter.com/ARP_Press/status/852288984034287617 (...)

• 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 cysts
  2 September 2003

  Benign Cystic Lesions of the Ovary, ovarian benign cystic lesions ; ovarian cysts ; cystic ovaries ; cystic ovary RPD
  Definition: An ovarian cyst is any collection of fluid, surrounded by a very thin wall, within an ovary.
  Most ovarian cysts are functional in nature and harmless (benign). In the US, ovarian cysts are found in nearly all premenopausal women, and in up to 14.8% of postmenopausal women.
  Images
  polycystic ovary (...)

• 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 (...)

• vulvar cysts
  21 March 2006

  Exemples
  vulvar mullerian cyst (vulvar paramesonephric cyst ) vulvar paramesonephric mucinous cyst
  vulvar mucous cyst
  vulvar epithelial inclusion cyst ( vulvar keratinous cyst / vulvar epidermal cyst )
  Bartholin gland cyst
  vulvar trichilemmal cyst
  vulvar ciliated cyst
  Differential diagnosis
  cystic cutaneous tumors
  infected, pus draining lesions folliculitis Fox-Fordyce disease hidradenitis suppurativa granuloma inguinale lymphogranuloma venereum
  See (...)

• ovarian endometriosis
  6 July 2007

  ovarian endometriosis (endometrioma of the ovary)
  Images
  Ovarian endometriosis. Note the hemosiderin-laden macrophages. IHC: CD10 highlights the endometrial stroma. https://twitter.com/otromicroscopio/status/775287299026345984
  Synopsis
  Endometriosis, or endometrioma, of the ovary may cause an adnexal mass in reproductive age females.
  Pigmented foci on an otherwise normal ovary or a large solitary hemor-rhagic cyst are the gross findings.
  Microscopy
  Histologic findings include (...)

• cryptorchidism
  13 June 2003

  Associations (Examples)
  WT1-associated diseases (germline WT1 mutations)
  otopalatodigital syndrome type 2 (OPD2)
  See also
  cryptorchidism-associated mixed testicular atrophy
  References
  Bilateral prepubertal testicular biopsies predict significance of cryptorchidism-associated mixed testicular atrophy, and allow assessment of fertility. Nistal M, Paniagua R, Riestra ML, Reyes-Múgica M, Cajaiba MM. Am J Surg Pathol. 2007 Aug;31(8):1269-76. PMID: (...)

• ovarian serous cystadenoma
  2 November 2004

  WKP PO
  Also includes : cystadenoma , cystadenofibroma , adenofibroma , papillary cystadenoma , papillary cystadenofibroma , papillary adenofibroma
  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 (...)

• abscess
  9 June 2004

  abcesses
  Definition: Abscesses are localized collections of purulent inflammatory tissue caused by suppuration buried in a tissue, an organ, or a confined space. They are produced by deep seeding of pyogenic bacteria into a tissue.
  Abscesses have a central region that appears as a mass of necrotic leukocytes and tissue cells. There is usually a zone of preserved neutrophils around this necrotic focus, and outside this region vascular dilation and parenchymal and fibroblastic proliferation (...)

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