Atlas of Gastrointestinal Imaging Figure 1.1.7 Familial adenomatous polyposis (FAP)

Dr. Perry Pickhardt
Aug 26, 2007
FIGURE 1.1.7 Familial adenomatous polyposis (FAP). Contrast-enhanced CT images (A and B) show multiple polypoid soft tissue lesions within the contrast-filled colon, including a dominant polypoid mass (asterisk) in the ascending colon. Images from subsequent colonoscopy (C and D) again demonstrate the multiple adenomatous polyps and the larger mass, which proved to be a tubulovillous adenoma with multiple foci of adenocarcinoma. Note the "cerebriform" appearance to the overlying mucosa often seen with adenomatous neoplasia. Double-contrast BE images (E and F) from two different patients with FAP show innumerable sessile filling defects representing adenomas. (A to D from Pickhardt PJ: Differential diagnosis of polypoid lesions seen at CT colonography (virtual colonoscopy). Radiographics 2004; 24:1535-1559.)
Latest in Home
Woman in gold patterned jacket speaking at ASTRO event podium with colorful logo displayed on screen
ASTRO: Incoming president talks 2026 highlights, previews next year
September 30, 2026
ASTRO cancer care facility entrance sign with blue dimensional letters and purple planter with white and yellow flowers
ASTRO: Radiosurgery may extend survival for SCLC with brain metastases
September 29, 2026
Free Webinar: CT Contrast Injection Reimagined
Sponsored
Free Webinar: CT Contrast Injection Reimagined
September 22, 2026
Glowing red anatomical illustration of a human heart with visible coronary arteries and internal chambers on dark background
Cardiac MRI-derived metrics predict adverse cardiac disease outcomes
September 29, 2026
More in Home
ASTRO: Incoming president talks 2026 highlights, previews next year
By Will Morton
Next year's theme in Chicago, IL, is "The Full Spectrum: From Discovery to Delivery, Expanding What's Possible."
September 30, 2026
Woman in gold patterned jacket speaking at ASTRO event podium with colorful logo displayed on screen
ASTRO: Radiosurgery may extend survival for SCLC with brain metastases
By Erik L. Ridley
Patients receiving SRS lived almost 18 months after treatment.
September 29, 2026
ASTRO cancer care facility entrance sign with blue dimensional letters and purple planter with white and yellow flowers
Video from ASTRO: How is the RPT boom impacting radiation oncology?
By Will Morton
The boom in radiopharmaceutical therapy (RPT) driven by theranostics is having a significant impact on radiation oncology.
September 29, 2026
ASTRO cancer care organization sign with blue letters and lavender base decorated with white and yellow flowers
Cardiac MRI-derived metrics predict adverse cardiac disease outcomes
By Erik L. Ridley
Diastolic function markers from cardiac MRI yielded incremental value over clinical risk factors and traditional imaging markers.
September 29, 2026
Glowing red anatomical illustration of a human heart with visible coronary arteries and internal chambers on dark background
Bosniak predicts renal cancer with unfavorable histologic features
By Amerigo Allegretto
The 2019 version of the Bosniak risk classification system can predict cancer in cystic renal masses with unfavorable histology.
September 29, 2026
Four abdominal CT scan images with arrows indicating anatomical features for medical diagnosis
ASTRO: Radiosurgery reduces suicidal ideation in major depressive disorder
By Will Morton
Before treatment, 14 of the 20 patients (70%) reported suicidal thoughts, while after treatment, one patient (5%) did.
September 29, 2026
Professional presenter at ASTRO conference podium delivering research presentation with laptop and display screen
ASTRO: Psychotherapy after cancer diagnosis tied to lower mortality
By Will Morton
Patients with depression had an 11% higher risk of cancer-specific mortality compared with those without it.
September 28, 2026
2026 ASTRO Annual Meeting promotional graphic featuring stylized numbers and Boston skyline illustration on dark background
EHR data may miss women eligible for lung cancer screening
By Amerigo Allegretto
Smoking history may be underestimated in over one-third of lung cancer screening-eligible women identified by self-reporting.
September 28, 2026
Middle-aged woman in light blue shirt sitting on gray couch with hand on chest
ASTRO: 10-year outcomes support hypofractionated radiotherapy in breast cancer
By Will Morton
While hypofractionated radiotherapy is well established for whole-breast irradiation after breast-conserving surgery, there is little long-term data on its use post-mastectomy.
September 28, 2026
Speaker presenting at ASTRO's 68th Annual Meeting plenary session with panelists seated at table
ASTRO: Few patients adhere to long-term hormone therapy after lumpectomy
By Erik L. Ridley
The results provide real-world context for treatment approaches that consider omitting radiation therapy after lumpectomy.
September 28, 2026
ASTRO cancer care facility signage with blue letters, green accents, and pink base decorated with white and yellow flowers
ASTRO: Fractionated radiosurgery lessens brain metastases recurrence
By Amerigo Allegretto
Focused radiation therapy over three to five sessions after surgery for a large brain metastasis reduced recurrence risk.
September 28, 2026
ASTRO cancer care organization entrance sign with blue dimensional letters and purple base decorated with white and yellow flowers
ASTRO: Navigator program improves access for African American breast cancer patients
By Will Morton
Afua Ofori-Darko, a medical student at Case Western Reserve, presented early phase I results of a structured patient navigation program.
September 28, 2026
Professional headshot of a woman with long reddish-brown hair in a modern office setting with large windows
Page 1 of 253
Next Page