Can Patients Perceive Scar Tissue After Hemorrhoidectomy?
No, patients typically cannot distinguish healed hemorrhoidectomy scars from normal tissue through conscious perception alone, though altered rectal sensation may occur in a subset of patients due to changes in the underlying sensory apparatus rather than scar tissue itself. 1
Understanding Post-Hemorrhoidectomy Tissue Changes
Normal Healing and Tissue Appearance
After complete healing (typically 9–14 days for most patients), the excision sites undergo secondary intention healing that leaves minimal visible scarring, and the healed tissue blends with surrounding anoderm and rectal mucosa. 2
Conventional excisional hemorrhoidectomy (both Milligan-Morgan open and Ferguson closed techniques) removes hemorrhoidal tissue and underlying vascular structures, with the Ferguson technique closing wounds primarily and potentially offering slightly improved wound healing compared to the open approach. 1
The recurrence rate of only 2–10% after conventional hemorrhoidectomy indicates that the surgical site heals with sufficient structural integrity to prevent reformation of pathologic hemorrhoidal tissue. 1, 2
Sensory Changes vs. Scar Perception
The key distinction is that patients do not "feel" scar tissue as a discrete structure, but some may experience altered rectal sensation due to changes in the sensory nerve network. 1
Up to 12% of patients develop sphincter defects documented by ultrasonography and manometry after hemorrhoidectomy, which can alter proprioception and rectal sensation, but these changes reflect neuromuscular injury rather than scar tissue perception. 1, 3
Biofeedback therapy for altered rectal sensation after hemorrhoidectomy does not correct measurable physiological defects in rectal sensation; any clinical improvement stems mainly from psychological support rather than true sensory retraining, confirming that the sensation changes are not due to patients "feeling" scar tissue. 1
Two small randomized trials using 8-week biofeedback programs showed global symptom improvement, but a placebo-controlled trial of 60 patients found no additional benefit of formal biofeedback over attention-placebo control, further supporting that altered sensation is not about perceiving scar tissue. 1
Clinical Implications
What Patients Actually Experience
Anal stenosis, which occurs in 0–6% of patients and represents excessive scarring that narrows the anal canal, is the only scenario where scar tissue creates a functionally perceptible problem—but patients experience this as difficulty with defecation rather than tactile awareness of scar tissue. 1, 3
Incontinence (affecting 2–12% of patients) results from sphincter injury during surgery, not from scar tissue formation, and manifests as functional impairment rather than conscious perception of altered tissue. 1, 3
Distinguishing Normal Hemorrhoidal Tissue from Healed Surgical Sites
Patients cannot reliably distinguish healed hemorrhoidectomy sites from normal hemorrhoidal tissue through self-examination or sensation. 1
Normal hemorrhoidal tissue consists of vascular cushions underlying the distal rectal mucosa and anoderm that contribute to anal continence (corpus cavernosum function), and after successful hemorrhoidectomy, the remaining tissue maintains this normal architecture. 4, 5
Internal hemorrhoids originate above the dentate line and are covered by insensate rectal mucosa, while external hemorrhoids arise below the dentate line in pain-sensitive anoderm; after healing, the dentate line anatomy is preserved, and patients cannot distinguish surgical sites from native tissue in either zone. 5, 2
Critical Pitfalls to Avoid
Do not attribute persistent anal pain to "scar tissue" without proper evaluation, as uncomplicated hemorrhoids and healed hemorrhoidectomy sites should not cause pain; persistent pain suggests other pathology such as anal fissure, abscess, or thrombosis. 1
Avoid assuming that altered rectal sensation represents scar tissue formation; formal biofeedback evaluation may be warranted, but clinicians should set realistic expectations that biofeedback is unlikely to "re-train" deep rectal sensation or correct any sensory alterations. 1
Never delay evaluation of anal stenosis symptoms (difficulty with defecation, straining, narrow stools) by attributing them to "normal scar tissue," as stenosis occurs in 0–6% of patients and may require intervention. 1, 3