Hamartomatous and inflammatory fibroid polyps of small bowel скачать в хорошем качестве

Hamartomatous and inflammatory fibroid polyps of small bowel

Hamartomatous polyps Composed of smooth muscle covered by normal mucosa Hamartomatous polyposis syndrome Peutz-Jeghers syndrome, Juvenile polyposis, PTEN hamartoma tumor syndrome (Cowden disease, etc.) Sporadic, solitary PJ-type (4th decade), Juvenile sporadic (children, rectosigmoid) Most common in jejunum in small bowel in PJS Inflammatory fibroid polyp Spindle cell stroma, concentric cuffing of vessels (onion skin) Inflammatory infiltrates rich in eosinophils Solitary: stomach (2/3, antrum/pylorus), small bowel (1/5, ileum) Symptomatic lesions are most common in ileum Slight female preponderance, 6th-7th decade Summary: Hamartomatous vs inflammatory polyps of SB Endoluminal without intramural growth ≠ GIST Hamartomatous polyps: Duodenum/jejunum, multiple a/w polyposis (Peutz-Jeghers syndrome, etc) Nonobstructive intussusception, Hyperenhancing Inflammatory polyp: Solitary, ileum Mostly symptomatic when detected on CT Hypoenhancing intussusceptum, possibly d/t ischemia