Rosai Chapter 18 - Anus Flashcards

1
Q

Most distal aspect of the anal canal

A

-Squamous zone

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2
Q

The junction between the anal canal and the perianal skin

A

Anal verge or Hilton’s white line

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3
Q

Also known as Anal or Semilunar valves

A

Transverse plicae

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4
Q

Positive or Negative

IHC for Anal glands:

-CK7

A

Positive

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5
Q

Positive or Negative

IHC for Anal glands:

-CK19

A

Positive

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6
Q

Positive or Negative

IHC for Anal glands:

-CK20

A

Negative

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7
Q

Also known as Transition zone

A

Intermediate or Cloacogenic zone

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8
Q

Two most important components of the anal musculature

A
  • Internal Anal Sphincter

- External Anal Sphicter

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9
Q

A component of the anal musculature that is a continuation of the circular muscle coat of the rectum

A

-Internal Anal Sphincter

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10
Q

A component of the anal musculature that is a complex triple-loop structure

A

-External Anal Sphincter

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11
Q

Three major type of Anorectal Malformations

A
  • High or Supralevator Anomalies (40%)
  • Low or Translevator Anomalies (40%)
  • Intermediate Anomalies (15%)
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12
Q

Major type of Anorectal Malformation

  • Rectal atresia
  • Anorectal agenesis
  • Cloacal malformations
A

-High or Supralevator Anomalies (40%)

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13
Q

Major type of Anorectal Malformation

-Serious prognosis because of severe obstruction

A

-High or Supralevator Anomalies (40%)

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14
Q

Major type of Anorectal Malformation

-Commonly associated with other congenital anomalies

A

-High or Supralevator Anomalies (40%)

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15
Q

Major type of Anorectal Malformation

Innervation of the pelvic muscle - Defective

A

-High or Supralevator Anomalies (40%)

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16
Q

Major type of Anorectal Malformation

Fistula or Fistulous tract - Rectum to the bladder, urethra, or vagina

A

-High or Supralevator Anomalies (40%)

17
Q

Major type of Anorectal Malformation

  • Ectopic (Perineal, Vestibular, or Vulvar) anus
  • Anal stenosis
  • Imperforate (Covered) Anus
A

-Low or Translevator Anomalies (40%)

18
Q

Major type of Anorectal Malformation

-Obstructions is rarely severe

A

-Low or Translevator Anomalies (40%)

19
Q

Major type of Anorectal Malformation

-Not associated with other congenital anomalies

A

-Low or Translevator Anomalies (40%)

20
Q

Major type of Anorectal Malformation

Innervation of the pelvic muscle - Normal

A

-Low or Translevator Anomalies (40%)

21
Q

Major type of Anorectal Malformation

Fistula or Fistulous tract - Present or Absent

A

-Low or Translevator Anomalies (40%)

22
Q

Major type of Anorectal Malformation

  • Anal agenesis
  • Anorectal stenosis
  • Anorectal membrane
A

-Intermediate Anomalies (15%)

23
Q

Major type of Anorectal Malformation

-Less common

A

-Intermediate Anomalies (15%)

24
Q

Two types of Hemorrhoids

A
  • External

- Internal

25
Q

Type of Hemorrhoids

-derived from the external/inferior hemorrhoidal plexus below the dentate line

A

External

26
Q

Type of Hemorrhoids

-covered by skin or squamous mucosa

A

External

27
Q

Type of Hemorrhoids

-derived from the superior hemorrhoidal plexus above the dentate line

A

-Internal

28
Q

Type of Hemorrhoids

-covered by rectal or transitional mucosa

A

Internal

29
Q

LGV or IBD

-Mild to moderate acute inflammation

A

LGV

30
Q

LGV or IBD

-Well-developed changes of chronicity such as basal plasmacytosis, Architectural distortion, and Paneth cell metaplasia - Absent

A

LGV

31
Q

AIN or PAIN

-used for lesions in squamous mucosa of the anal canal itself

A

AIN

32
Q

AIN or PAIN

-lesions affecting perianal skin within 5cm of the anal verge

A

PAIN