Humpath.com - Human pathology

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• theca

  3 March

  theca of follicle ; theca folliculi ; follicular theca WKP
  Definition : The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become secondary follicles.
  The theca are divided into two layers, the theca interna and the theca externa.
  Theca cells are a group of endocrine cells in the ovary made up of connective tissue surrounding the follicle. They have many diverse functions, including (...)

• theca externa

  3 March

  WKP
  Definition : The theca externa is the outer layer of the theca folliculi. It is derived from connective tissue, the cells resembling fibroblasts, and contains abundant collagen.
  During ovulation, the surge in luteinizing hormone increases cAMP which increases progesterone and PGF2α production. The PGF2α induces the contraction of the smooth muscle cells of the theca externa, increasing intrafollicular pressure.
  This aids in rupture of the mature oocyte, or immature oocyte at the (...)

• theca interna

  3 March

  WKP
  Definition : Theca lutein cells are also known as small luteal cells.
  Theca interna cells express receptors for luteinizing hormone (LH) to produce androstenedione, which via a few steps, gives the granulosa the precursor for estrogen manufacturing.
  After rupture of the mature ovarian follicle, the theca interna cells differentiate into the theca lutein cells of the corpus luteum. Theca lutein cells secrete androgens and (...)

• Schneiderian papilloma

  28 February

  Definition : Schneiderian papillomas are benign neoplasms that are associated with three key characteristics: tendency to recur, capacity for local destruction, and association with squamous cell carcinoma.
  They are classified into inverting, fungiform, and oncocytic varieties. The inverting and fungiform varieties are the most common, and the inverting variety has the highest rate of association with malignancy.
  The inverting and oncocytic varieties are classically found on the lateral (...)

• carcinosarcoma with a chondrosarcomatous component

  27 February

  Open references
  Carcinosarcoma of the Gallbladder with Chondrosarcomatous Differentiation.
  https://pubmed.ncbi.nlm.nih.gov/30881717/
  Synchronous carcinosarcoma of the lower ureter and renal pelvis with heterologous chondrosarcomatous elements
  https://pubmed.ncbi.nlm.nih.gov/26458704/
  Paywall references
  So-called carcinosarcoma of the duodenum with a chondrosarcomatous component.
  https://pubmed.ncbi.nlm.nih.gov/26249526/
  Sarcomatoid urothelial carcinoma with chondrosarcomatous (...)

• carcinosarcoma

  27 February

  Definition : Carcinosarcoma is a biphasic malignant tumor consisting of both carcinomatous and sarcomatous components,
  Subtypes
  carcinosarcoma with a chondrosarcomatous component

• CDSS

  27 February

  Clinical Decision Support System (CDSS)

• solitary necrotic nodule of the liver

  21 February

  hepatic solitary necrotic nodule PO
  See also
  hepatic necrotic nodule
  Open references
  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3415885/

• hepatic necrotic nodule

  21 February

  hepatic necrotic nodules
  Etiology
  tumoral necrosis necrotic metastasis
  infectious necrosis tuberculosis and caseous necrosis
  ischemic necrosis
  hepatic solitary necrotic nodule
  See also
  hepatic nodules
  necrotic nodules

• lichenoid sialdenitis

  21 February

  See also
  lichenoid infiltrate / lichenoid inflammation
  sialadenitis
  Paywall references
  https://pubmed.ncbi.nlm.nih.gov/33423424/

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