Anus

• anal gland cyst
  5 October

  Definition : Anal gland/duct cyst (AGC) is rare and observed in only 0.05% of patients undergoing anal surgery. AGC is thought to be a retention cyst in the anal gland and arises when an obstruction of the anal duct causes fluid collection in the anal gland.
  Open references
  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7392575/

• anal anomalies
  5 October

  Examples
  anal cysts

• tailgut cyst
  5 October

  PO
  Gross
  2 - 12 cm (mean 9.5 cm) multilocular cyst
  Microscopy
  multilocular cyst with squamous, mucinous, simple, pseudostratifed ciliated or transitional lining
  may contain bundles of smooth muscle in cyst wall
  meningeal tissue, thyroid tissue and glomus bodies have also been reported
  Differential diagnosis
  anal gland cyst
  duplication cyst
  epidermal cyst
  sacral meningocele
  teratoma / dermoid cyst
  See also
  anal (...)

• anal cysts
  5 October

  perianal cysts
  Examples
  tailgut cyst
  anal gland cyst
  duplication cyst
  epidermal cyst
  sacral meningocele
  cystic teratoma / dermoid cyst
  See also
  anal anomalies
  cysts

• anal cytology
  10 November 2019

  See also
  anal pathology
  cytology

• anat tumors
  10 November 2019

  Examples
  anal epithelial tumors HPV-associated anal epithelial tumors

• anal Paget disease
  7 October 2019

  PO
  Digital cases
  JRC:10822 : Extramammary Paget disease.
  See also
  mammary Paget disease
  extramammary Paget disease urthral Paget disease vulvar Paget disease anal / perianal Paget disease
  See also
  cutaneous diseases
  cutaneous tumors

• anal pathology
  8 May 2018

  Pathology : anal pathology
  anal malformations
  anal anomalies
  anal lesional syndromes
  anal diseases
  anal tumors
  congenital defects
  Infectious diseases
  Inflammatory diseases Crohn disease fissure fistula granuloma inguinale HIV lymphogranuloma venereum lymphoid polyp syphilis ulcer ulcerative colitis
  Benign anomalies / non-neoplastic lesions granular cell tumor hemorrhoids hypertrophic HSV hypertrophied papillae Hirschsprung inflammatory cloacogenic polyp internal anal (...)

• anal gland adenocarcinoma
  27 June 2017

  anal gland carcinoma
  See also
  anal glands
  anal carcinomas
  Images
  Anal duct/gland carcinoma with CK7 staining. Note overlying surface squamous mucosa and lack of in situ component. https://twitter.com/ARP_Press/status/879474374411264001

• anal transitional epithelium
  14 June 2017

  Images
  Comparison of anal transitional epithelium and high grade dysplasia/anal epithelial neoplasia https://twitter.com/ARP_Press/status/873710457453989889

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