Flowers in sessile umbels, with or without leaves at base.
花生于无梗伞形花序，有或没有叶在基部。
Inflorescences cymose capitula with few sessile flowers, peduncle to 3 cm with recurved appressed fine hairs.
聚伞头状花序，着生数量较少的花朵，花梗约3厘米，有内弯的（？）贴伏细毛。
Conclusion: PPH is a simple, safe, effective method with minimal invasion and few complications for rectal sessile polyp.
结论：PPH切除直肠广基息肉是一种简便、安全、有效和术后并发症少的微创治疗方法。
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