Abstract
Background: Solitary Rectal Ulcer Syndrome (SRUS) was a relatively uncommon and easily misdiagnosed clinical entity in children. The diagnosis of this condition was often delayed due to lack of clinical suspicion. Only case series were available and no definitive treatment was postulated. Here, we share our experience of SRUS in our institute and reviewed the literature published so far.
Aim: To study the clinical profile and treatment response of Solitary Rectal ulcer Syndrome in Children (SRUS).
Materials: The clinical profile and 1 year follow up response of the diagnosed cases of SRUS over a period of 5 years was retrospectively collected from medical record department.
Results: The median age of presentation among 24 children was 8 years with majority (75%) above 5 years. All children presented with intermittent rectal bleeding with median duration of 5.5 months. The other presenting symptoms documented were hard stool (79%), mucorrhea (70%), and abdominal pain (58%). One child presented with rectal prolapse. On colonoscopy, 46% had single ulcer while another 46% had multiple ulcers and 8% had polypoidal lesion. All lesions were within distal rectum and had characteristic histological pattern. All children were treated with conventional treatment like dietary fibers and laxatives along with toilet training. About 75% children attained remission and 25% had relapse but responded with corticosteroid enema. None required surgery.
Conclusion: Conventional treatments itself induce and maintain remission in most of SRUS patients if treatment is instituted at the earliest. Thus, early suspicion and diagnosis is needed to achieve remission.
Introduction
Bleeding per rectum is one of the common presenting complaints seen in pediatric clinic. The common differential diagnosis are infectious/allergic colitis, colonic polyps, Inflammatory Bowel Disease (IBD), anal fissure and rare conditions like rectal colopathy, vascular ectasia. Solitary rectal ulcer syndrome (SRUS) is often missed at early clinical presentation due to lack of clinical suspicion and usually diagnosed lately.
SRUS is a benign chronic disorder often related to abnormal defecation or straining during defecation. It was well-recognized in the adult population with an incidence of 1 in 100,000 () and less common in childhood period. Lack of distinct clinical presentation and varying symptomology, diagnosis is often delayed if not suspected. And since it is a masquerader of IBD and polyps, misdiagnosis may lead to treatment disaster and unwanted surgery. Only few case reports and case series have been reported so far in children. We report a series of 24 children with SRUS and their treatment response.
Materials and Methods
Retrospective analysis of case records during the period 2012–2017 was done at Department of Pediatric Gastroenterology, Institute of Child Health, Chennai, India. Histologically confirmed SRUS cases were selected and informations such as demographic profile, clinical presentations, routine investigations (complete hemogram, renal function test, stool, and urine routine) and colonoscopic findings were obtained from medical record department. In addition to this, type of treatment, and its response over follow-up period of 1 year were analyzed.
Results
Total number of children with SRUS was 24. The median age of presentation was 8 years ranging between 5 and 12 years with Male to Female ratio of 1:1.1. Intermittent rectal bleeding was the presenting complaint in all cases. Mucorrhea (70.8%) and abdominal pain (58.3%) were the associated symptoms. The median duration from onset of symptoms to diagnosis was 5.5 months (IQR 3.0–7.75) with 70 percent of children had symptoms for < 6 months duration. Straining at defecation and passage of hard stool was present in 19 (79.1%) and there was a need for digital evacuation in 27% of children. Four children (16.6%) presented with diarrhea. Rectal prolapse was documented in one child. Anemia (Hb < 10 gm/dl) was most commonly seen in 79.1% of cases. The colonoscopy findings revealed that 11 (45.8%) children had single ulcer in the anterior wall of rectum, another 11 (45.8%) children had multiple ulcers and two children (8.3%) had polypoidal lesion (Table 1). Size of ulcers ranged from 0.5 to 4 cm in diameter but majority were 1–1.5 cms in diameter (Figure 1). All the lesions were in rectum and within 5–10 cms from anal verge. Histology finding documented were presence of fibromuscular obliteration in all cases (100%) followed by surface ulceration with minimal inflammation in 22 (92%) and hypertropic muscularis mucosa with splayed fibers in 21 (87.5%) (Figure 2). A mixed inflammatory infiltrate was also encountered in 3 cases, but cryptitis or crypt abscesses and chronic changes characteristic of IBD were not seen in any biopsies.
Table 1
| Characteristics | N (%) |
|---|---|
| Demographic profile | |
| Median age of presentation | 8 years (IQR 5.75–11) |
| Male: Female ratio | 1:1.1 |
| Clinical presentation | |
| Median duration of symptoms | 5.5 months (IQR 3.0–7.75) |
| Rectal Bleeding | 24 (100) |
| Straining during defecation | 19 (79.1) |
| Mucorrhea | 17 (70.8) |
| Abdominal pain | 14 (58.3) |
| Rectal Prolapse | 1 (4.2) |
| Stool consistency | |
| Hard stool | 19 (79.1) |
| Loose stool | 4 (16.6) |
| Digital evacuation | 6 (25) |
| Anemia | 19 (79.1) |
| Colonoscopy findings | |
| Single ulcer | 11 (45.8) |
| Multiple ulcer | 11 (45.8) |
| Polypoidal lesion | 2 (8.3) |
| Histological findings | |
| Fibromuscular obliteration of the lamina propria | 24 (100) |
| Surface ulceration with minimal inflammation | 22 (91.6) |
| Hypertrophic muscularis mucosa with splayed fibers | 21 (87.5) |
| Mixed inflammatory infiltrate with branching and distorted glandular crypts | 3 (12.5) |
| Cryptitis or crypt abscesses and chronic changes | 0 |
Demographic profile, clinical presentation, colonoscopy findings and histological findings (N = 24).
IQR, Inter-Quartile Range.
Figure 1
Figure 2
All children with constipation were treated with dietary fibers (age in years + 5 g per day), toilet training and followed by laxatives like Polyethylene glycol—PEG 3,350 (0.5–1 g/kg once daily) or Lactulose (1 ml/kg twice daily initially then titrated to achieve 2 soft stools per day) or Liquid paraffin 1 ml/kg/day oral solution for 4–8 weeks. Parents were reassured of the benign nature of the disease and need for regular toilet habits to prevent relapses. About 18 children out of 24 (75%) responded to above treatment and maintained remission till the follow up period of 1 year. Six children (25%) had recurrent rectal bleeding and were treated with corticosteroid rectal enema for 5–7 days. One child had profuse recurrent rectal bleeding despite medical therapy and was referred to higher center for Argon Plasma coagulation. But the child was lost to follow-up. None of our children required surgery (Table 2).
Table 2
| Treatment | Response N (%) (Follow-up of 1 year) |
|---|---|
| Conventional treatment | (N=24) |
| Toilet Training and High Fiber Diet: ≥ (Age in yrs + 5) gms ± Osmotic Laxatives/Stool softeners | Remission 18 (75) Relapse 6 (25) |
| {PEG(0.5–1 gm/kg OD) or Lactulose (1 ml/kg BD) or Liquid Paraffin (1 ml/kg OD) per oral} | |
| Other treatments | (N=6) |
| Rectal Steroid enema | Remission 5 (83.3) |
| Failure 1 (16.7) | |
| Argon Plasma Coagulation(1 child) | Lost to follow up (1) |
Treatments and its response (N = 24).
Discussion
In the year 1829, Cruveilhier () had reported four unusual cases of rectal ulcers. Lloyd-Davis used the term “solitary ulcers of the rectum” in the late 1930s. The disease became widely recognized after a review of 68 cases by Madigan et al. () Later, Rutter et al. () also reported the detailed pathogenic concept of the disease. Solitary rectal ulcer is a misnomer since only 40% of patients had ulcer and others presentations were hyperemic mucosa to broad-based polypoidal lesions. Lesions may be of varying size and shape and ulcer may be solitary or multiple () and may involve sigmoid colon also.
High index of clinical suspicion is needed and diagnosis is based on symptomatology in combination with endoscopic and histological findings. The pathophysiology of SRUS is incompletely understood. Inappropriate contraction of the puborectalis muscle, chronic mechanical, and ischemic trauma, inflammation by hard stools and rectal mucosal prolapse have been commonly implicated ().
In the present study, majority (75%) of children were aged more than 5 years at the time of presentation as comparable with other cases series (–) and youngest patient in our study was 1.5 years. Our series observed slight female predominance in contrast to Suresh et al. () and Kennedy et al. ().
Intermittent rectal bleeding and/or mucorrhea were the commonest presentation similar to other reported series (, –) Predisposing factors for SRUS like constipation (hard stool), straining during defecation were present in majority of case series (, , –). The other presenting symptom which signifies rectal diseases like tenesmus, rectal prolapse were present in varying proportions (, , –). One of the importance and significant observation was that median time interval between onset of index symptoms to diagnosis was 5.5 months in our study series whereas, it was found to be ranging from 6 months to 3.2 years in the other series reviewed (Table 3). The reason for our early diagnosis may be due to early clinical suspicion and evaluation for SRUS earliest at after ruling out common causes. Clinical symptoms in favor of SRUS were features of dyssynergic defecation such as straining during defecation, hard stool, sensation of incomplete evacuation, and digital evacuation.
Table 3
| Case series | N | Age in years | Duration from symptoms to diagnosis | Symptoms | Colonoscopic finding | Treatment given | Outcomes |
|---|---|---|---|---|---|---|---|
| Godbole et al. () | 2 | Mean: 13 ± 1 | 2–5 years | RP, RB | U, Po | R | Remission (2) |
| Kiristioglu et al. () | 4 | NA | NA | M, RB, C, AP | NA | T, L, Su, Sc | Remission (4) |
| Ertem et al. () | 2 | Mean: 12.5 ± 1.5 | 2–6 years | RB, RP, C | U | L, Su, St, R | Relapse (2) |
| Gabra et al. () | 3 | Median: 2.5 (Range: 2–15) | 1–2 years | S, RB | U | F, Sur | Remission (2) Relapse (1) |
| de Carpi et al. () | 3 | Mean: 11 ± 2.1 | NA | RB | NA | NA | NA |
| Somani et al. () | 24 | NA | Mean: 12.6 ± 4.6 months | RB | U | BT, L, APC | Remission (24) |
| Suresh et al. () | 22 | Median: 10 (1.5–18 y) | Mean: 6 months | RB, M, C, RP | E, U, Po | T, F, Su, M | Remission (14) Relapse (8) |
| Blackburn et al. () | 8 | Mean: 9.87 | Mean: 1.73 yrs (Range:1 m−7 yrs) | S, RB, C, M | U, E | T, L | Remission (4) Relapse (2) Lost to follow up(2) |
| Perito et al. () | 15 | Median: 13.9 (IQR 9.8–15.6) | Median: 3.2 (IQR 1.2–5.5) yrs | RB, D, C | E, U, Po | L, M | Lost to follow up (6) Response (6) Relapse (3) |
| Urganci et al. () | 6 | Median:13 (IQR 12–14) | Median: 1 yr (IQR 0.25–4) | C, D, RB, RP | U & Po | Me, St, Sc | Remission (6) |
| Dehghani et al. () | 55 | Mean: 10.4 ± 3.7 | Mean: 15.5 ± 11.2 months | RB, C, M, T, D | E, U, Po | F, Su, Sc, St, R | Lost to follow up (12) Remission (30) Not in remission (13) |
| Anjum et al. () | 21 | 8–12 | NA | M, C, T | E, U, Po | NA | NA |
| Kowalska et al. () | 31 | 13 (Range: 5–18) | 1–48 months | RB, M, AP | U | T,F, L, Me, Su, Sc, BT, APC, Sur | Response (20) Failure (11) |
| Podder et al. () | 140 | Median: 12 (IQR 10–14) | Median: 21 (IQR 9–36) months | RB, C, S, D, RP, T | U | T, BT, Local therapy | Lost to follow up (27) Remission (71) |
| Present study | 24 | Median: 8 (IQR 5.75–11) | Median: 5.5 (IQR 3–6) months | RB, M, C, RP, D, AP | U, Po | T, L, St | Remission (23) Lost to follow up (1) |
Summary of case series reported in literature over past 20 years.
N, number of children; NA, source not available.
RB, rectal bleeding; RP, rectal prolapse; M, mucorrhea; S, straining; C, constipation; D, diarrhea; T, tenesmus; AP, abdominal pain.
U, ulcer; Po, polypoidal lesion; E, erythema; T, toilet training; F, fiber; L, laxatives; Me, mesalamine tab; St, corticosteroid enema; Sc, sucralfate enema; Su, sulfasalazine enema; Inj.St, injection corticosteroid; R, rectoplexy; BT, bio-feedback training; APC, argon plasma coagulation; Sur, surgery.
The next work-up was sigmoidoscopy with biopsy to rule out IBD. Endoscopic findings suggestive of SRUS were discrete well-demarcated single or multiple ulcers/erythema in contrast to continuous, symmetrical erythema/hyperemia mucosa with/without ulceration, and loss of vascular pattern in ulcerative colitis. Typical histological findings were fibrous obliteration of the lamina propria, streaming of fibroblasts, and muscle fibers between crypts, thickening or hyperplasia of muscularis mucosa, branching, and distorted glandular crypts, surface ulceration with minimal inflammation (). Thus, diagnosis was ascertained by combination of clinical symptoms, colonoscopic findings, and histological examination.
Treatment was not standarized and various medicationas and surgical procedures had been tried (, ). Response to treatment was not consistent in the reviewed cases series (Table 3). Treatment should include reassurance of the patient and parents that the lesion is benign and chronic. High-fiber diet and appropriate toilet training in young and biofeedback therapy () in adolescents had shown encouraging results. Sucralfate enema may be effective in some patients () Sulfasalazine () and corticosteroids (, ) had been tried with varying response. Other treatment modalities include endoscopic application of human fibrin sealant (), laser therapy (), argon plasma coagulation (). In contrast to other case series, we had observed remission in 75% of children with conventional treatment of laxative along with toilet training and only 25% needed rectal corticosteroid enema to achieve remission. Traditional squatting position for defecation and fiber rich staple food intake practices in our region may be a reason for achieving high remission by conventional treatment.
On reviewing case series published over past 20 years (Table 3), the major difference we observed in our present study was that early diagnosis and treatment by conventional methods itself achieve remission and decreases the morbidities due to SRUS in significant proportion.
Conclusion
We conclude that conventional treatments itself induce and maintain remission in most of SRUS patients if treatment is instituted at the earliest. Hence, early suspicion and diagnosis of SRUS must be considered in a child with bleeding per rectum.
Statements
Data availability statement
The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation, to any qualified researcher.
Author contributions
PT: data collection, analysis, and manuscript writing. BS: guidance on manuscript writing. DN: revision and final approval. All authors contributed to the article and approved the submitted version.
Acknowledgments
We acknowledge medical record department staff members for their support to collect data.
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
References
1.
MartinCJParksTGBiggartJD. Solitary rectal ulcer syndrome in Northern Ireland. 1971-1980. Br J Surg. (1981) 68:744–7. 10.1002/bjs.1800681021
2.
CruveilhierJ. Ulcere chronique du rectum. Anatomie Pathologique du Corps Humain. Paris: JB Bailliere (1829). p. 1829–42.
3.
MadiganMRMorsonBC. Solitary ulcer of the rectum. Gut. (1969) 10:871–81. 10.1136/gut.10.11.871
4.
RutterKRRiddellRH. The solitary ulcer syndrome of the rectum. Clin Gastroenterol. (1975) 4:505–30.
5.
TjandraJJFazioVWChurchJMLaveryICOakleyJRMilsomJW. Clinical conundrum of solitary rectal ulcer. Dis Colon Rectum. (1992) 35:227–34. 10.1007/BF02051012
6.
ErtemDAcarYKaraaEKPehlivanogluE. A rare and often unrecognized cause of hematochezia and tenesmus in childhood: solitary rectal ulcer syndrome. Pediatrics. (2002) 110:e79. 10.1542/peds.110.6.e79
7.
SureshNGaneshRSathiyasekaranM. Solitary rectal ulcer syndrome: a case series. Indian Pediatr. (2010) 47:1059–61. 10.1007/s13312-010-0177-0
8.
DehghaniSMHaghighatMImaniehMHGeramizadehB. Solitary rectal ulcer syndrome in children: a prospective study of cases from southern Iran. Eur J Gastroenterol Hepatol. (2008) 20:93–5. 10.1097/MEG.0b013e3282f1cbb6
9.
GabraHORobertsJPVariendSShawisRN. Solitary rectal ulcer syndrome in children. A report of three cases. Eur J Pediatr Surg. (2005) 15:213–6. 10.1055/s-2004-821180
10.
KennedyDKHughesESMastertonJP. The natural history of benign ulcer of the rectum. Surg Gynecol Obstet. (1977) 144:718–20.
11.
UrganciNKalyoncuDEkenKG. Solitary rectal ulcer syndrome in children: a report of six cases. Gut Liver. (2013) 7:752–5. 10.5009/gnl.2013.7.6.752
12.
PeritoERMiletiEDalalDHChoSJFerrellLDMcCrackenMet al. Solitary rectal ulcer syndrome in children and adolescents. J Pediatr Gastroenterol Nutr. (2012) 54:266–70. 10.1097/MPG.0b013e318240bba5
13.
Kowalska-DuplagaKLazowska-PrzeorekIKarolewska-BochenekKWoynarowskiMCzaja-BulsaGStawarskiAet al. Solitary rectal ulcer syndrome in children: a case series study. In: Kowalska-Duplaga K, Lazowska-Przeorek I, Karolewska-Bochenek K, Woynarowski M, Czaja-Bulsa G, Stawarski A, Pieczarkowski S, Hapyn E, Jozefczuk J, Korczowski B, Szaflarska-Poplawska A, editors. Clinical Research and Practice.Cham: Springer (2017). p. 105–12. 10.1007/5584_2017_2
14.
DehghaniSMBahmanyarMGeramizadehBAlizadehAHaghighatM. Solitary rectal ulcer syndrome: is it really a rare condition in children?World J Clin Pediatr. (2016) 5:343–8. 10.5409/wjcp.v5.i3.343
15.
PoddarUYachhaSKKrishnaniNKumariNSrivastavaASarmaMS. Solitary rectal ulcer syndrome in children: a report of 140 cases. J Pediatr Gastroenterol Nutr. (2020) 71:29–33. 10.1097/MPG.0000000000002680
16.
DehghaniSMHaghighatMImaniehMHGeramizadehB. Solitary rectal ulcer syndrome in children. Turk J Pediatr. (2000) 42:56–60.
17.
BlackburnCMcDermottMBourkeB. Clinical presentation of and outcome for solitary rectal ulcer syndrome in children. J Pediatr Gastroenterol Nutr. (2012) 54:263–5. 10.1097/MPG.0b013e31823014c0
18.
GodbolePBotterillINewellSJSagarPMStringerMD. Solitary rectal ulcer syndrome in children. J R Coll Surg Edinb. (2000) 45:411–4.
19.
de CarpiJMVilarPVareaV. Solitary rectal ulcer syndrome in childhood: a rare, benign, and probably misdiagnosed cause of rectal bleeding. Report of three cases. Dis Colon Rectum. (2007) 50:534–9. 10.1007/s10350-006-0720-1
20.
SomaniSKGhoshAAvasthiGGoyalRGuptaP. Healing of a bleeding solitary rectal ulcer with multiple sessions of argon plasma. Gastrointest Endosc. (2010) 71:578–82. 10.1016/j.gie.2009.10.038
21.
AnjumMNCheemaHAMalikHSHashmiMA. Clinical spectrum of solitary rectal ulcer in children presenting with per-rectal bleed. J Ayub Med Coll Abbottabad. (2017) 29:74–7.
22.
HarayPNMorris-StiffGJFosterME. Solitary rectal ulcer syndrome–an underdiagnosed condition. Int J Colorectal Dis. (1997) 12:313–5. 10.1007/s003840050113
23.
DehghaniSMMalekpourAHaghighatM. Solitary rectal ulcer syndrome in children: a literature review. World J Gastroenterol. (2012) 18:6541–5. 10.3748/wjg.v18.i45.6541
24.
MaloufAJVaizeyCJKammMA. Results of behavioral treatment (biofeedback) for solitary rectal ulcer syndrome. Dis Colon Rectum. (2001) 44:72–6. 10.1007/BF02234824
25.
ZargarSAKhurooMSMahajanR. Sucralfate retention enemas in solitary rectal ulcer. Dis Colon Rectum. (1991) 34:455–7. 10.1007/BF02049928
26.
KumarMPuriASSrivastavaRYachhaSK. Solitary rectal ulcer in a child treated with local sulfasalazine. Indian Pediatr. (1994) 31:1553–5.
27.
EderleABulighinGOrlandiPGPilatiS. Endoscopic application of human fibrin sealant in the treatment of solitary rectal ulcer syndrome. Endoscopy. (1992) 24:736–7. 10.1055/s-2007-1010574
28.
RauBKHarikrishnanKMKrishnaS. Laser therapy of solitary rectal ulcers: a new concept. Ann Acad Med Singapore. (1994) 23:27–8.
Summary
Keywords
bleeding per rectum, mucorrhea, constipation, solitary rectal ulcer, children
Citation
Thirumal P, Sumathi B and Nirmala D (2020) A Clinical Entity Often Missed—Solitary Rectal Ulcer Syndrome in Children. Front. Pediatr. 8:396. doi: 10.3389/fped.2020.00396
Received
05 March 2020
Accepted
10 June 2020
Published
17 July 2020
Volume
8 - 2020
Edited by
Jorge Amil Dias, Centro Hospitalar de São João, Portugal
Reviewed by
Victor Manuel Navas-López, Hospital Materno-Infantil, Spain; Vinoth Boopathy, Aarupadai Veedu Medical College & Hospital, India
Updates
Copyright
© 2020 Thirumal, Sumathi and Nirmala.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: P. Thirumal drthirugastro@gmail.com
This article was submitted to Pediatric Gastroenterology, Hepatology and Nutrition, a section of the journal Frontiers in Pediatrics
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