20 - Anus, Rectum and Prostate Flashcards

1
Q

Common patient concerns

A
  • Changes in bowel habits
  • Blood in stool
  • Pain with defecation; rectal bleeding or tenderness
  • Anal warts or fissures
  • Weak urine stream
  • Burning with urination

(These make good screening questions, too.)

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2
Q

Melena

A

Black, tarry stools

Can be caused from high protein, bleeding from a high source in the GI

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3
Q

Stools that are black, but not tarry

A

Iron

Bismuth salts

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4
Q

Hematochezia

A
Red blood in stool
Lower source (colon, rectum, or anus)

Hemorrhoids, etc.

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5
Q

Reddish, nonbloody stool

A

Ingestion of red foods

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6
Q

What is the difference between screening and diagnosing/treating?

A

Screening is for people who don’t have symptoms

If someone has symptoms, you are diagnosing and treating

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7
Q

Do you screen for prostate cancer?

A

No, the USPSTF ranks this screen at a D, which indicates no screening

D = “don’t screen”

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8
Q

What does “cancer” mean?

A

Social term referring to biological agent that will kill a person before their natural time of death

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9
Q

What does “screening” mean?

A

When you are looking for disease or dysfunction when the person doesn’t have symptoms

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10
Q

If a patient has symptoms, what are you doing when you try to find the problem?

A

Diagnose, NOT screen

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11
Q

Prostate Cancer Stats

A
  • Leading male cancer diagnosis
  • Second leading cause of death
  • Risk increases after 50
  • African Americans higher risk - Caucasian (earlier age, more advanced)
  • Family history and diet are relevant
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12
Q

According to the USPSTF, what does a D mean?

A

Recommends against the screening service. There is a moderate or high certainty that the service has no net benefit or that the harms outweigh the benefits.

The suggestion discourages the use of screening.

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13
Q

What are the two ways that we can screen for prostate cancer?

A
PSA = prostate specific antigen
DRE = digital rectal examination
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14
Q

What is the appropriate plan of action for prostate cancer screening?

A
  • At 50 years, talk to patient, discuss pros and cons

- At 45 years with an at-risk male, begin screening

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15
Q

What makes a male at-risk?

A

African American

Father or brother with prostate cancer before 65

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16
Q

What should you NOT test with these patients?

A

PSA: Prostate specific antigen

Not a good representation of risk or need for intervention

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17
Q

What do we know about screening for prostate cancer based on screening studies?

A

They are commonly recommended and uncommonly useless

18
Q

What do we know about PSA?

A

Prostate specific antigen

  • Used to think it was a biomarker for early detection
  • Many limitations (elevated in benign conditions, false positives, false negatives, unnecessary testing such as biopsies)
  • “Over diagnosis”
  • Side effects with treatment are common
19
Q

What do we know about DRE?

A

Digital Rectal Examination

  • Low sensitivity: 59%
  • Specificity: 94%
  • Detects tumors on the posterior and lateral aspects
  • Misses 25-35% of tumors arising in other areas
  • Abnormal findings need to be investigated
  • Can combine prostate and colo-rectal exam
20
Q

Is colorectal cancer screening recommended?

A

Depends on the age…

  • 50-75 = grade A
  • 76-85 = grade C
  • Over 85 = grade D
21
Q

What do we know about colorectal cancer screening?

A
  • There is an average risk, so we screen for it
  • Starting at 50 years for both male and female
  • Need annual high-sensitivity fecal occult blood test (if positive, need a colonoscopy)
22
Q

What increases risk for colorectal cancer?

A
  • Inflammatory bowel disease
  • Family history of an inherited polyposis syndrome
  • At risk means you should have a colonoscopy every 3-5 years
23
Q

When do you do a female DRE?

A

During pelvic exam

Be careful because the cervix, a retroverted uterus or even a tampon can mimic a tumor

24
Q

DRE technique

A
  • Position and drape
  • Gloves
  • Inspect sacrococcygeal and perianal areas
  • Lubricate index finger
  • Explain to patient may feel sense of urge
  • Pad of finger on anus
  • Introduce finger with relaxation
  • After: Wipe or offer tissues
25
Q

Common abnormalities found during DRE exam

A

Prostate

  • Prostatitis
  • Benign Prostatic hyperplasia
  • Cancer

Rectum/anus

  • Anal fissure
  • Polyps
  • Cancer
  • Hemorrhoids
  • Prolapse
26
Q

Signs of bacterial prostatitis

A
Dysuria
Frequency
Nocturia (new)
Hesitancy
Suprapubic pain
Painful ejaculation
“Flu-like” symptoms
27
Q

Classic symptoms of prostatitis

A

Calor (warmth)
Dolor (pain)
Rubor (swelling, redness, heat)
All of the above refer to inflammation

Tumor

28
Q

What test results will you see in prostatitis?

A

DRE controversial
Labs: elevated WBC and positive UA
PSA would be elevated, but we don’t screen

29
Q

What are the signs of benign prostatic hypertrophy?

A
Urgency
Frequency
Nocturia (gradual)
Hesitancy
Weak stream
Hematuria (non-specific)
30
Q

What are the symptoms of benign prostatic hypertrophy?

A

Enlarged
Nontender
Hard
Symmetrical

31
Q

Is the PSA useful in benign prostatic hypertrophy?

A

NO

32
Q

Signs of prostate cancer

A

Same as BPH

33
Q

What are the symptoms of prostate cancer?

A
Nodules
Nontender
Induration
Asymmetric
Lateral lobes
34
Q

Is the PSA useful in prostate cancer?

A

NO

35
Q

Anal fissure

A
  • Tear in skin at anus
  • Acute
  • Small amount blood
  • May appear large
  • Cause is straining or constipation
  • Treat conservatively
36
Q

Anal fistula

A
  • Infected anal gland
  • Above dentate line
  • Chronic draining abscess
  • Bypasses external sphincter
  • Surgical treatment (except in Crohn’s)
37
Q

Hemorrhoids (external)

A

Painful
Thrombose
Skin tag

38
Q

Hemorrhoids (internal)

A

Painless
Bleed
Protrude

39
Q

Prolapse

A
  • Protruding mass
  • Reducible initially
  • Associated with poor bowel habits, digital disimpaction, chronic constipation
40
Q

Polyps

A
  • Polyps
  • Intestinal growths
  • May be asymptomatic, bleed or obstruct
  • Found on DRE or colonoscopy
  • Biopsy mandatory
  • Classification big topic
41
Q

Rectum and anal cancer

A
  • Staged
  • Screening is effective
  • Risk based (symptoms, family hx)
  • Surveillance for (+)
  • USPSTF recommended
42
Q

Anal PAP

A

Anal screening cytology or DNA

Goal uncertain; USPSTF NO recommendations

  • Initial screening in high risk populations
  • Similar reporting as PAP

Technique

  • Water moistened polyester fiber
  • Left lateral position
  • Swab gently inserted to stop point
  • Remove swab with a spiral motion
  • Sample fixed with ethanol or liquid cytology