{"paper_id":"43469459-799d-4a5f-98d4-c230e1e72c45","body_text":"Research Article | DOI: https://doi.org/10.31579/2690-1919/064\n1 Calcutta Fertility Mission, 21 Bondel Road, Kolkata, India.\n*Corresponding Author: Siddhartha Chatterjee, Calcutta Fertility Mission, 21 Bondel Road, Kolkata, India\nCitation: Siddhartha Chatterjee, Bishista Bagchi, Rajib G. Chowdhury, Abira Dutta, (2020). Latent Genital Tuberculosis – A Causative Factor for Ectopic Pregnancy- A Retrospective Analysis. J Clinical Research and Reports, 3(5); DOI:10.31579/2690-1919/064\nCopyright: © 2020 Siddhartha Chatterjee. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.\nReceived: 04 March 2020 | Accepted: 13 March 2020 | Published: 24 March 2020\nKeywords: tubercular infestation; endometrium; ectopic tubal pregnancy; latent genital tuberculosis; infertility\nBackground: Ectopic tubal pregnancy (ETP) is a dreadful situation for both the patient and the doctor. Prevalence of ETP is increasing because of availability of convenient and modern modalities for the diagnosis of ectopic pregnancy. Patients are aware of the condition and many lives can be saved when diagnosed and managed at an early stage; still almost 10% of maternal deaths are due to ETP. The etiology of ETP remains unknown in almost half of the cases and hence the risk of recurrence remains high. The present study has been conducted to screen patients with history of tubal ectopic pregnancyand to determine the role of tubercular infestation of the eutopicendometrium as an important etiological factor in ‘unexplained’ ectopic.\nResults: This retrospective analysis was conducted at Calcutta Fertility Mission in Kolkata, India, from January 2010 to December 2018. Of 282 patients with history of ETP,who were selected, 109 were in Group A, 72 of them in Group B and 101 in Group C. Tubercular infestation of the endometrium (DNA-PCR positive) was found in all (109) patients in Group A, and others in Group B and C had previous history of pelvic surgery or endometriosis, pelvic infection or unexplained infertility associated with tubercular infestation of the endometrium. In our study latent genital tuberculosis has been proved to be a statistically significant factor for ETP. (p value - <0.001) Moreover other factors like tubal surgeries (p value - <0.001) or correction of minor tubal defects (p value – 0.024); endometriosis (p value- <0.001) and pelvic inflammatory disease (p value -<0.001), have shown statistical significance in causing ectopic pregnancy. Clinical pregnancy rate (p value -0.002) and live birth rate (p value-<0.001) has been proved to be statistically significant after treatment of ETP.\nConclusion: Along with the documented causes of ETP tubercular infestation of the endometrium should be considered as an important etiology for ectopic pregnancy and should be screened on a routine basis for early intervention and treatment.\nEctopic tubal pregnancy (ETP) is an alarming condition both for the expectant mother and for the treating physician. ETP occurs when the developing blastocyst gets implanted at either of the fallopian tubes instead of the eutopicendometrium. It eventually ends up in pregnancy loss which is a frustrating situation for the patient. The prevalence of ETP is on the rise because of increased awareness, availability of transvaginal ultrasonography (TVUS), estimation of beta-human chorionic gonadotropin (βhCG) in serum and urine. Many cases of “silent” or asymptomatic ETP which resolve automatically may be picked up on a larger scale by modern diagnostic methods; thereby adding to the prevalence as well. Today, early intervention saves lives and reduces morbidity, but ectopic pregnancy still accounts for 4% to 10% of maternal deaths and leads to a high incidence of ectopic site gestations in subsequent pregnancies.[1]Several risk factors for ETP have been documented including age, sociodemographic characteristics, reproductive history (multiple sexual partners, pelvic inflammatory disease (PID), Chlamydia trachomatis infection, certain forms of contraception, smoking, DES exposure, endometriosis, utero-tubal anomalies and treatment for infertility. [2]In about 50\nThis retrospective study was conducted at Calcutta Fertility Mission in Kolkata, India, from January 2010 to December 2018. The data were collected from a total of 282 patients as cases between 20-35years of age, who had previous history of ectopic pregnancy diagnosed by serialβhCG estimation, TVUS. 150 of them (72 patients in Group B and 78 patients in Group C) were treated by salphingostomy or salphingectomy and the rest of 132 patients were either treated with methotrexate or had spontaneous remission.They did not have any history of cigarette smoking or alcoholism. These patients were either scared to attempt another pregnancy or could not conceive after they started the attempt between last 6-9months. Patients were grouped into Group A, B and C depending on the predisposing factors for ETP.\n282 women were divided into three groups: Groups A, B, and C in which 109 (38.6%) patients were in Group A who had history of single ETP had only latent female genital tuberculosis (FGTB) as the etiological factor (only TB-PCR Positive) .Group B consisted of 72 (25.5%) women in which 26 (36.11%) patients with history of single ETP were found to have tubercular bacilli infestation in the endometrium, along with previous history of surgical intervention as pre-disposing factors for ETP. Group C included 101 (35.8%) patients of whom 66 (65.35%) had endometrialtubercular infestation associated with other pelvic pathology as etiology. These patients were treated with anti-tubercular drugs (ATD) and the clinical pregnancy rate (CPR), rate of miscarriage, recurrent ectopic pregnancy and live birth rate (LBR) were recorded, within one year of treatment.\n|\n| GROUP | Total |\n|\n| |||\n| GROUP A | GROUP B | GROUP C | p Value | Significance | |||\nAGE | 21-25 |\n| 22(20.18) | 29(40.28) | 29(28.71) | 80(28.37) | 0.068 | Not Significant |\n26-30 |\n| 40(36.7) | 20(27.78) | 35(34.65) | 95(33.69) | |||\n31-35 |\n| 47(43.12) | 23(31.94) | 37(36.63) | 107(37.94) | |||\nTotal |\n| 109(100) | 72(100) | 101(100) | 282(100) |\n|\n|\nTable 1 - Age of patients: Data analysis done by Fisher's Exact Test\nEtiology |\n| Group A | Group B | Group C | p Value | Statistical Significance |\nTUBERCULAR INFESTATION (PCR POSITIVE) |\n| 109(100) | 26(36.11) | 66(65.35) | <0> | Significant |\nPCR NEGATIVE |\n| 0(0) | 46(63.89) | 35(34.65) |\n|\n|\nLAPAROSCOPIC CORRECTION OF TUBAL DEFECTS | YES | 0(0)\n| 26 | 0(0)\n| 0.024 | Significant |\n| NO | 0(0)\n| 46 | 0(0)\n|\n|\n|\nOVARIAN CYSTECTOMY | YES | 0(0)\n| 29 | 0(0)\n| 0.125 | Not Significant |\n| NO | 0(0)\n| 43 | 0(0)\n|\n|\n|\nAPPENDICECTOMY | YES | 0(0)\n| 7 | 0(0)\n| <0> | Significant |\n| NO | 0(0)\n| 65 | 0(0)\n|\n|\n|\nTUBAL SURGERY | YES | 0(0)\n| 10 | 0(0)\n| <0> | Significant |\n| NO | 0(0)\n| 62 | 0(0)\n|\n|\n|\nENDOMETRIOSIS | YES | 0(0)\n| 0(0)\n| 32 | <0> | Significant |\n| NO | 0(0)\n| 0(0)\n| 69 |\n|\n|\nPID | YES | 0(0)\n| 0(0)\n| 28 | <0> | Significant |\n| NO | 0(0)\n| 0(0)\n| 73 |\n|\n|\nUNEXPLAINED INFERTILITY | YES | 0(0)\n| 0(0)\n| 43 | 0.163 | Not Significant |\n| NO | 0(0) | 0(0 | 58 |\n|\n|\nTable 2- Participants’ etiology:Data analysis done by Binomial test\nPCR POSITIVE |\n| GROUP A | GROUP B | GROUP C | p Value | Statistical significance |\nCLINICAL PREGNANCY RATE | NO | 53(48.62) | 16(61.54) | 50(75.76) | 0.002 | Significant |\n| YES | 56(51.38) | 10(38.46) | 16(24.24) |\n|\n|\nMISCARRIAGE | NO | 94(86.24) | 24(92.31) | 60(90.91) | 0.522 | Not Significant |\n| YES | 15(13.76) | 2(7.69) | 6(9.09) |\n|\n|\nRECURRENT ECTOPIC | NO | 103(94.5) | 22(84.62) | 61(92.42) | 0.227 | Not Significant |\n| YES | 6(5.5) | 4(15.38) | 5(7.58) |\n|\n|\nLIVE BIRTH RATE | NO | 74(67.89) | 22(84.62) | 61(92.42) | <0> | Significant |\n| YES | 35(32.11) | 4(15.38) | 5(7.58) |\n|\n|\nTable 3 Data analysis done by Pearson’s Chi Square test for Independence of Attributes/ Fisher's Exact Test\nPCR NEGATIVE |\n| GROUP A | GROUP B | GROUP C | p Value | Statistical significance |\nCLINICAL PREGNANCY RATE | NO | 0(0) | 40(86.96) | 24(68.57) | 0.044 | Significant |\n| YES | 0(0) | 6(13.04) | 11(31.43) |\n|\n|\nMISCARRIAGE | NO | 0(0) | 45(97.83) | 32(91.43) | 0.188 | Not Significant |\n| YES | 0(0) | 1(2.17) | 3(8.57) |\n|\n|\nRECURRENT ECTOPIC | NO | 0(0) | 43(93.48) | 30(85.71) | 0.246 | Not Significant |\n| YES | 0(0) | 3(6.52) | 5(14.29) |\n|\n|\nLIVE BIRTH RATE | NO | 0(0) | 44(95.65) | 32(91.43) | 0.434 | Not Significant |\n| YES | 0(0) | 2(4.35) | 3(8.57) |\n|\n|\nTable 4: Data analysis done by Pearson’s Chi Square test for Independence of Attributes/ Fisher's Exact Test\nAlmost one half of women with ectopic pregnancy have no identifiable causal factors (ACOG 2018). ETP has been seen to be on an increasing trend in women with more than 35 years of age. [3]The relevance of age along with the effect on the fallopian tube or delay of oocyte transport has been questioned time and again by many authors.[4,5]In our study we have included nulliparous women < 35years xss=removed>\nPelvic infection, abnormal implantation, placentation or blood vessel transformation can result in miscarriage.[15,16] In our study the miscarriage rate in Group A was as high as 13.76% even after treatment, which can be correlated with our previous study.[ 17 ] Miscarriage rates in our overall patients with (p value - 0.522) or without (p value – 0.188) genital tuberculosis was not statistically significant.\nPelvic adhesions due to endometriosis, appendicitis, or other pelvic infections, may distort the anatomy of the fallopian tube resulting in an abnormal tubo-ovarian relation, impair oocyte release, alter sperm motility, cause abberant myometrial contractions, as well as affect embryo transport. [18][19]\nIn women with endometriosis, there can be impaired endometrial growth, structural and molecular alterations in eutopic endometrium resulting in implantation failure or progesterone resistance in the endometrium.[20-23]\nWomen with endometriosishad a significantly higher risk of early pregnancy complications or ETP.[24] Other authors also indicated higher risk of miscarriage (about 76%) and nearly three times higher for ectopic pregnancy in women with endometriosis.[19]The findings of our study also support the fact where endometriosis has been seen to be a statistically significant factor for ectopic pregnancy. (p value- <0>\nPrevious surgical interventions like tubal reanastamosis, salpingostomy, tuboplasty, ovarian cystectomy, laparoscopic correction of tubal defects are obvious risk factors of ETP. 2–13 % women suffered from ETP after tubal reanastomosis performed manually or by robotic approaches[25, 26]\nCorrection of minor tubal defects arising from mild or minimal endometriosis (Stage I and II) or subclinical pelvic infection result in about 25% pregnancy rate within one year of the procedure. Similar result is obtained with laparoscopic ovarian cystectomy as well. In both the conditions ETP is a possible sequelae.[27,28] In the present study laparoscopic tubal surgery has been seen to be statistically significant factor for ETP (p value <0>\nThe association of infertility and ectopic pregnancy is complex, as ectopic pregnancy has been observed to be a cause as well as a consequence of infertility and it can be presumed that they have common causal factors. Previous history of tubal damage or rupture ; use of ovulation induction drugs increase risk of ETP.[29,30]Unexplained infertility or treatment for the same like use of Ovulation Induction drugs like Clomiphene citrate (CC) or Gonadotrophins (GnRH) as well as ART increases risk of ectopic pregnancy.[31]Long term treatment with CC leads to alteration of ESR2 (especially ESR2A) expression and activation in cilia were seen before the onset of CC-induced tubal apoptosis, suggesting a mechanism for CC-induced ETP.[32]\nAlthough many of these factors have always been screened and sometime the possible cause of ectopic pregnancy has been detected, in about 50% of cases the cause still remains unknown. Endometrial inflammation has been proved to be hostile for implantation and the movement of the embryo comes to a halt in the fallopian tube or it might as well move to the other tube by trans-uterine migration. In order to find out the cause in these patients with unexplained ETP we had screened them for LGTB using DNA-PCR test. Presence of tubercular bacilli is responsible for inflammation of the fallopian tubes resulting in presence of pro-inflammatory interleukins which might facilitate tubal implantation leading to ETP as seen in cases of Chlamydia trachomatis infection. Tubercular insult of the female genital tract is responsible solely or in association with other predisposing factors for ETP as documented by other authors.[33,34\n31 to 59 % patients treated with Anti-tubercular drugs (ATD) for FGTB conceived spontaneously and even those who had undergone IVF had live birth, spontaneous abortion or ectopic pregnancy.[35-38] In the present study clinical pregnancy rate (CPR) has been seen to be statistically significant in both the section of patients who had tubercular infestation i.e. PCR positive (p value -0.002) as well as who did not have genital tuberculosis i.e. PCR negative (p value – 0.044).\nIn our study live birth rate (LBR) has statistical significance in women with post-ATD treatment (p value - <0>\nRisk of ETP increases by 7- to 13-fold after one episode of tubal ectopic pregnancy. A patient with prior pregnancy has a 50%-80% chance of having a subsequent intrauterine pregnancy (IUP) and a 10%-25% risk of a future tubal pregnancy.[31] Recurrent ETPs were significantly more likely to have a positive history of tubal or pelvic surgery (61.5 % vs. 3.5 %, p < 0.05 and 53.8 vs. 14 %, p < 0.05) and positive history of previous tubal surgery and previous ectopic pregnancy differ in women at risk of a recurrent ETP when compared to women not at risk (AUC, 0.844), according to Hurrell A et al.[42]In the present study recurrent ectopic pregnancy rate has no statistical significance in the overall cohort of participants. (p value – 0.227, p value – 0.246)\nEctopic pregnancy needs immediate attention and intervention due to its fatal consequence. In about 50\nEthical considerations\nOur study was a retrospective study which included patient records, and we did not directly get in contact with them, but our study was confirmed by Ethical Committee of Calcutta Fertility Mission.\nAvailability of data and material – Retrospective data of a prospective database of our institution\nCompeting interests–There is no conflict of interest among the authors.\nFunding – Intramural grant of Calcutta Fertility Mission\nAuthors' contributions –\nDr. Siddhartha Chatterjee – concept of study, preparation and editing of manuscript\nDr. Bishista Bagchi – data collection, preparation of manuscript, follow-up of patients, sample collection\nDr.RajibGon Chowdhury– data collection, preparation of manuscript\nMs. Abira Dutta – laboratory procedures and reporting, sample collection\nAcknowledgements - We, the authors acknowledge Mr. Souvik Dutta for preparation of statistical analysisand Ms. Orphi Bhattacharya for formatting the manuscript.\n- Marion LL, Meeks GR. 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Al A meen J Med Sci. 2009;2(1):67- 7251.\nView at Publisher | View at Google Scholar - Xiong X, Buekens P, Wollast E. IUD use and the risk of ectopic pregnancy: a meta-analysis of case–control studies. Contraception. 1995;52:23–34.\nView at Publisher | View at Google Scholar - Farquhar CM. Ectopic pregnancy. Lancet. 2005;366:583–91.\nView at Publisher | View at Google Scholar\nDear Grace Pierce, Editorial Coordinator of Journal of Clinical Research and Reports, Thank you for the speedy and efficient peer review process. I appreciate the fact that your peer reviewers do not take months to respond like with some other journals. I would also like to thank the editorial office for responding quickly to my questions. It is an excellent journal. I plan to submit more manuscripts in the future. Best wishes from, Robert W. 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