Enterobius vermicularis infection among appendectomy specimens in Qom Province, Central Iran: a retrospective study

Mardani, Ahmad; Feizi, Fatemeh; Fakhar, Mahdi; Beyranvand, Hossein Barani; Farrokhi, Mohsen; Abbasi, Mohammad; Asfaram, Shabnam

doi:10.1007/s00580-017-2512-5

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…Based on the results of the current study, E. vermicularis was the only reported parasite in the patient’s undergone appendectomy and was reported in 20 of 7628 appendectomy specimens (0.26%) in a 5-year period. The findings of our study are identical to those of a similar study conducted in Qom Province, Iran, with 0.22% appendicitis associated with pinworm infection 29 . The results of a study conducted in Greece showed that E. vermicularis was identified in only in 0.65% of patients with clinical appendicitis 30 .…”

Section: Discussionsupporting

confidence: 90%

Parasitological and histopathological features of appendectomy specimens in Fars Province, southern Iran: a retrospective study

Mohtasebi

Shokripour²,

Vahid³

et al. 2023

Annals of Medicine &Amp; Surgery

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Background: Although the appendix is the most commonly resected and examined intra-abdominal organ, the pathogenesis and etiology of acute nonspecific appendicitis remain enigmatic. This retrospective study aimed to assess the prevalence of parasitic infection in surgically removed appendices and to evaluate the probable associations between the presence of parasites and the occurrence of appendicitis through parasitological and histopathological examinations of the appendectomy specimens. Materials and methods: This retrospective study was carried out from April 2016 to March 2021 among all patients referred to hospitals affiliated with Shiraz University of Medical Sciences, Fars Province, Iran, for appendectomy. Patient information, including age, sex, year of appendectomy, and type of appendicitis, was collected from the available data in the hospital information system database. In positive cases, all pathology reports were retrospectively evaluated for the presence of the parasite and its type, and analytical and descriptive statistics were carried out using SPSS software version 22. Results: A total of 7628 appendectomy materials were evaluated in the present study. Of the total participants, 4528 (59.4%, 95% CI: 58.2–60.5) were males, and 3100 (40.6%, 95% CI: 39.5–41.8) were females. The mean age of participants was 23.87±14.28 years. Overall, Enterobius vermicularis was observed in 20 appendectomy specimens. Fourteen of these patients (70%) were less than 20 years old. Conclusion: This study indicated that E. vermicularis is one of the common infectious agents that could be found in the appendix and may increase the risk of appendicitis. Therefore, in terms of appendicitis, clinicians, and pathologists must be aware of the possible presence of parasitic agents, especially E. vermicularis, to treat and manage the patients sufficiently.

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Section: Discussionsupporting

confidence: 90%

Parasitological and histopathological features of appendectomy specimens in Fars Province, southern Iran: a retrospective study

Mohtasebi

Shokripour²,

Vahid³

et al. 2023

Annals of Medicine &Amp; Surgery

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“…In the present study, depending on whether or not there were parasites in the appendix lumen, the patients were split into two groups: in group 1 (n=74) we observed parasitic infection, whereas in patients of group 2 (n=12,939), no parasitic infestation was present. E. vermicularis was identified in 0.56% (n=73) appendectomy specimens, with previ-ous studies from Iran quoting between 0.2% and 2.9% [13,17,19,[24][25][26]45]. This is lower in comparison with the prevalence reported from the conducted studies in some regions of Iran [13,24].…”

Section: Discussionmentioning

confidence: 88%

The Histopathological Findings in Appendectomy Specimens in an Iranian Population

Rayani,

Agholi,

Esfandiari

et al. 2023

GMJ

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Background: Appendicitis is one of the most common causes of acute abdominal surgeries. The importance of parasitic etiologies in the pathogenesis of appendicitis is not well known in appendectomy specimens on a large scale in southwestern Iran. The current study aimed to retrospectively assess the demographic data and histopathological records of appendicitis in a 28-year period in Fars province, southwestern Iran. Materials and Methods: Histopathological records of 13,013 patients who had undergone surgeries for appendicitis at Dr. Ali Shariati Hospital, affiliated with the Fasa University of Medical Sciences from December 1993 to January 2021 were reviewed and data concerning the patients' demographic data and histopathological records were retrieved from each record. More than 6800 archived microscopic glass slides were also reviewed. Results: From a total of 13,013 histopathological records of surgical excisions of appendicitis that were reviewed over a 28-year period, 8,189 (62.9%) were male and 4,842 (37.1%) were female. Patients' age ranged from 2 to 98 years, with a mean age of 24.68±19.87 years. The most common inflammatory changes were 5,687 (43.7%), 1,228 (9.4%), 670 (5.1%), 522 (4%), and 363 (2.8%) cases of acute appendicitis, suppurative appendicitis, early acute appendicitis, gangrenous appendicitis, and perforated appendicitis respectively. Microscopically, no viral inclusions, fungal elements, and histopathologic findings of bacterial causes were found. Parasitic infections such as helminthiasis were detected in 74 (0.6%) cases aged from 6 to 63. Enterobiasis (Syn. oxyuriasis, pinworm infection) accounted for 73 (98.6%) of the 74 helminthiases, while ascariasis accounted for 1 (1.4%). Out of 74 cases, 29 (39.2%) showed evidence of appendicitis. Conclusion: The results suggest that although parasitic agents are minor causes of appendicitis, these agents should be kept in mind during differential diagnosis. However, whether every parasitic infection leads to appendicitis is controversial.

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“…The results of the literature review ( Table 1 and Figure 6 ) revealed that the prevalence of parasites in appendectomy specimens varied immensely between studies ( 8–50 ). The highest prevalence was reported in a study from Libya and the lowest prevalence was reported from Iran, with 68.6% and 0.22%, respectively ( 38 , 42 ). The prevalence ranged between 0.33% and 9.8% in studies from Turkey ( 8 , 49 ).…”

Section: Discussionmentioning

confidence: 97%

Seeds or parasites? clinical and histopathological features of seeds and parasites in the appendix

Issın¹,

Demir²,

Şimşek³

et al. 2022

TJPATH

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Objective: Parasites and plant seeds may both be found in appendectomy specimens. Each plant seed has a different appearance and can thus exhibit wide variations under the microscope. Fragmented seeds may histologically mimic parasites. The differential diagnosis between seeds and parasites can be challenging in such cases. This study aimed to determine the incidence of parasites, seeds, and foreign bodies in appendectomy materials and highlight the most characteristic histopathological features associated with these structures. Material and Method:In this study, pathology slides of 9,480 patients, who underwent appendectomy between 2010 and 2021, were reviewed, and cases that contained parasites, seeds, or foreign bodies were identified. We reviewed the literature on seeds and parasites in appendectomy specimens. Results:Parasites were observed in 56 (0.6%) cases. Of these cases, 45 had Enterobius vermicularis (80%), and 11 had Taenia subspecies (20%). Plant seeds were observed in 47 cases (0.5%), and were macroscopically recognizable in 5 of them as olive, lemon, and cherry seeds. Parasites and seeds were usually observed in the lumen of appendix vermiformis, filled with abundant fecal materials. Conclusion:Seeds are seen in approximately 0.5% of the appendectomy specimens. Though rarely seen, the fragmented seed appearance may cause diagnostic difficulties. In this context, the key morphological features of parasites and plant seeds outlined in this study may be helpful in their differential diagnosis.

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Enterobius vermicularis infection among appendectomy specimens in Qom Province, Central Iran: a retrospective study

Cited by 4 publications

References 43 publications

Parasitological and histopathological features of appendectomy specimens in Fars Province, southern Iran: a retrospective study

Parasitological and histopathological features of appendectomy specimens in Fars Province, southern Iran: a retrospective study

The Histopathological Findings in Appendectomy Specimens in an Iranian Population

Seeds or parasites? clinical and histopathological features of seeds and parasites in the appendix

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