[Interstitial ectopic pregnancy: report of an unusual location]. / Embarazo ectópico cornual: reporte de una localización inusual.

Ectopic pregnancy occurs when a developing blastocyst implants at any site other than the uterine cavity. Ectopic pregnancy is most commonly found in the fallopian tube but may also occur in the cornua of the uterus (also found as interstitial in the literature), cervix, ovary, or abdominal cavity or in a cesarean scar. An estimated 2% of pregnancies are ectopic, of which an interstitial pregnancy represents an extremely rare variant of ectopic pregnancy (EP), accounting for 2% to 4 % of all cases. The aim of this report is to describe the case of a patient with suspected ectopic pregnancy of uncertain location in which an exploratory laparoscopy was performed due to the onset of symptoms, discovering a cornual ectopic pregnancy in site of a past salpingectomy because of a tubal ectopic pregnancy. A cornuotomy by laparoscopy was performed to resect the cornual ectopic pregnancy. The patient had an uneventful postoperative course, with negativization of human chorionic gonadotropin levels. This type of location is rare and is associated with high rates of maternal morbidity and mortality. It represents a diagnostic and therapeutic challenge for the gynecologist who faces it.

Se define a un embarazo ectópico cuando el blastocisto en desarrollo se implanta fuera de la cavidad uterina. La localización más frecuente es en la trompa, pero también puede ocurrir en el ovario, cérvix, cicatriz de cesárea, cuerno uterino (también mencionado como intersticial en la literatura) o abdominal. Se estima que la incidencia de embarazo ectópico es aproximadamente el 2% de todos los embarazos, siendo la localización cornual solo el 2-4% de esos casos. El objetivo de este reporte es describir el caso de una paciente con sospecha de embarazo ectópico de localización incierta a quien se le realizó una laparoscopia exploradora por inicio de síntomas, evidenciando un embarazo ectópico cornual en el lecho de una salpingectomía, producto de un embarazo ectópico tubario previo. Se realizó la cornuotomía con resección del mismo por laparoscopia y su evolución fue favorable con negativización de la subunidad beta. Este tipo de localización es rara y se asocia con grandes tasas de morbimortalidad materna. Representa un desafío diagnóstico y terapéutico para el ginecólogo que lo enfrenta.

Uso de mifepristona en embarazo ectópico intersticial: un reporte de caso / Use of mifepristone in an interstitial ectopic pregnancy: a case report

Introducción: El embarazo ectópico intersticial es una forma de presentación poco frecuente, con una incidencia del 2-4% de los embarazos ectópicos; sin embargo, a pesar de su baja incidencia la mortalidad es cinco veces mayor, impactando en las cifras de mortalidad materna y representando en torno al 10-15% de los casos. Objetivo: Presentar un caso de embarazo ectópico intersticial, cuya ocurrencia es poco frecuente, así como el abordaje satisfactorio del manejo médico con mifepristona y metotrexato. Caso clínico: Mujer de 28 años con antecedente de resección tubárica por quiste paraovárico derecho, quien acudió a urgencias por hallazgo en ecografía obstétrica de sospecha de embarazo intersticial izquierdo y se le administró manejo farmacológico con dosis de metotrexato y mifepristona, con éxito. Conclusiones: El manejo médico con metotrexato y mifepristona para el embarazo ectópico intersticial parece ser una elección eficaz en los casos con estabilidad hemodinámica y deseo de conservación de la fertilidad.

Background: Interstitial ectopic pregnancy represents a rare form of presentation, with an incidence of 2-4% of all ectopic pregnancies. However, despite its low incidence, it is associated with a five-fold increase in mortality, significantly impacting maternal mortality rates, accounting for approximately 10-15% of cases. Objective: To present a case of interstitial ectopic pregnancy, which is a rare occurrence, as well as the successful medical management approach with mifepristone and methotrexate. Case report: A 28-year-old women with a history of right paraovarian cyst tubal resection presented to the emergency department due to suspected left interstitial pregnancy identified on obstetric ultrasound. The patient was successfully managed with pharmacological treatment using doses of methotrexate and mifepristone. Conclusions: Medical management with methotrexate and mifepristone for interstitial ectopic pregnancy appears to be an effective choice in cases with hemodynamic stability and a desire for fertility preservation.

Experiencias en el tratamiento del embarazo ectópico del cuerno uterino / Treatment experiences about uterine horn ectopic pregnancy

Introducción: El embarazo intersticial es poco frecuente y su mortalidad es superior a otras localizaciones. Su diagnóstico cada vez más precoz, permite escoger tratamientos menos agresivos. La piedra angular, es la hemostasia. Objetivo: Describir los resultados del tratamiento de pacientes atendidas por embarazo ectópico del cuerno. Método: Se realizó un estudio descriptivo en 18 mujeres con embarazo ectópico intersticial, atendidas en el Hospital Militar Central Dr. Luis Díaz Soto del 2010 al 2019. Fueron tratadas mediante laparotomía y sutura circular del cuerno, con posterior resección cornual y extracción del material ovular. Se estudiaron las variables edad, factores de riesgo, tiempo quirúrgico, sangramiento transoperatorio, evolución (complicaciones, recuperación, fracción beta de la gonadotropina coriónica, controles ecográficos posoperatorios) y estadía hospitalaria. Resultados: El 72 por ciento de las pacientes estuvo entre 20 - 25 años, el 61,1 por ciento tuvo antecedentes de abortos provocados, seguido de enfermedad inflamatoria pélvica en el 44,4 por ciento. La media del tiempo quirúrgico fue de 36 minutos. Ninguna paciente tuvo sangramiento en el sitio de la cirugía. La fracción beta de la gonadotropina coriónica, se negativizó a la cuarta semana y los controles ecográficos posoperatorios de todas las pacientes fueron normales el día 15. En todas las pacientes se utilizó la sutura en jareta. Conclusiones: Los resultados en el tratamiento de las pacientes atendidas por embarazo instersticial, fueron favorables, la reparación de la pared uterina se realizó mediante un procedimiento seguro que mostró la aplicabilidad de la sutura en jareta. Se evitaron las pérdidas sanguíneas y complicaciones como la histerectomía(AU)

Introduction: Interstitial pregnancy is rare and its mortality is higher than in other locations. Its increasingly early diagnosis allows the choice of less aggressive treatments. The cornerstone is hemostasis. Objective: To describe the results of the treatment of patients treated for ectopic horn pregnancy. Method: A descriptive study was carried out in 18 women with interstitial ectopic pregnancy, treated at the Hospital Militar Central Dr. Luis Díaz Soto from 2010 to 2019. They were treated by laparotomy and circular suture of the horn, with subsequent cornual resection and extraction of ovular material. The variables age, risk factors, surgical time, intraoperative bleeding, evolution (complications, recovery, beta fraction of chorionic gonadotropin, postoperative ultrasound controls) and hospital stay were studied. Results: 72 percent of the patients were between 20 - 25 years old, 61.1 percent had a history of induced abortions, followed by pelvic inflammatory disease in 44.4 percent. The mean surgical time was 36 minutes. No patient had bleeding at the surgery site. The beta fraction of chorionic gonadotropin was negative at the fourth week and postoperative ultrasound controls of all patients were normal on day 15. The drawstring suture was used in all patients. Conclusions: The results in the treatment of the patients attended for interstitial pregnancy were favorable, the repair of the uterine wall was carried out by means of a safe procedure that showed the applicability of the drawstring suture. Blood loss and complications such as hysterectomy were avoided(AU))

O papel da ressonância magnética na distinção das gestações intersticial, cornual e angular / The role of magnetic resonance imaging in distinguishing interstitial, cornual and angular pregnancies

Apesar da melhora no diagnóstico e tratamento, a gravidez ectópica ainda é a principal causa de mortalidade materna no primeiro trimestre da gravidez. Formas raras podem apresentar um desafio diagnóstico e, sem um diagnóstico adequado, a incidência de complicações e a mortalidade materna estão relacionadas a aumento de seus índices. Os termos "gravidez cornual" e "gravidez intersticial" têm sido utilizados de forma inconsistente na literatura, sendo frequentemente usados como sinônimos do termo "gravidez angular". Uma distinção estrita entre essas entidades pode ter implicações clínicas importantes, porque o curso natural, a propedêutica e os resultados diferem entre eles. A ressonância magnética não é o padrão-ouro para o diagnóstico de gravidez ectópica, no entanto possui relevância significativa no diagnóstico de possíveis complicações decorrentes dessa afecção. Nesse contexto, esta revisão aborda a importância da ressonância magnética na distinção dos tipos de gravidez mencionados, ilustrados por meio de casos do nosso serviço.(AU)

Despite the improvement in diagnostics and treatment, ectopic pregnancies are still the main cause of maternal mortality in the first trimester of pregnancy. Rare forms may present a diagnostic challenge and without adequate diagnosis, the incidence of complications and maternal mortality is greatly increased. The terms "cornual pregnancy" and "interstitial pregnancy" have been used inconsistently in the literature, frequently been used as synonyms and even used interchangeably with the term "angular pregnancy". A strict distinction among these entities can have important clinical implications because the natural course, management and outcomes differ among them. Magnetic resonance imaging is not the gold standard for the diagnosis of ectopic pregnancy, however, it can be useful in the diagnosis of complicated presentations of such ailment. In this context, this review highlights the importance of MRI in distinguishing the aforementioned types of pregnancies, illustrated with few cases from our service.(AU)

Embarazo ectópico intersticial tratado con metotrexato y cirugía: caso clínico / Interstitial ectopic pregnancy treated with methotrexate and surgery: clinical case

RESUMEN Antecedentes: El embarazo intersticial es muy inusual y representa <2,4% de todos las gestaciones ectópicas. Objetivo: Se presenta el caso de un embarazo ectópico intersticial tratado de forma médica y quirúrgica. Se realiza una revisión literaria sobre las opciones de manejo y tratamiento. Caso clínico: Paciente primigesta de 36 años con gestación ectópica cornual derecha tras 11 días de la transferencia de un embrión criopreservado. Se decide tratamiento con metotrexato (MTX) sin éxito y con progresión del embarazo, obligándonos por lo tanto a realizar una evacuación quirúrgica de la gestación, exponiendo a la paciente tanto a los efectos secundarios del tratamiento médico como a los del abordaje quirúrgico. Conclusión: El embarazo ectópico intersticial sigue siendo un reto para el ginecólogo. El diagnóstico muy temprano de estas patologías, aunque difícil, podría evitar la opción quirúrgica, siendo el MTX más eficaz en los casos tratados precozmente.

ABSTRACT Background: Interstitial pregnancy is very unusual, and it represents <2,4% of all ectopic pregnancies. Objective: We present the case of an interstitial ectopic pregnancy treated medically and surgically. A literary review is also made about the management and treatment options. Clinical case: A 36-year-old patient with a diagnosis of right cornual ectopic pregnancy after 11 days of a cryopreserved embryo's transfer. Methotrexate (MTX) treatment was applied as the initial step but without lasting results. Because of the progression of the pregnancy, further therapy was focused on its surgical evacuation exposing the patient to the side effects of both medical treatment and surgical approach. Conclusion: Interstitial ectopic pregnancy remains a challenge for the gynecologist. Very early diagnosis of these pathologies, although difficult, could avoid the surgical outcome, being MTX more effective in cases intervened initially.

Interstitial and angular pregnancies: Case reports and differential diagnosis.

Interstitial and angular pregnancies are rare and have high rates of morbidity and mortality. These terms continue to create confusion and are frequently misused. The standardization of terminology and differentiation of cases is necessary to distinguish between different outcomes. This article aims to report one case of angular and another case of interstitial pregnancies and to discuss clinical and radiological characteristics, prognosis and treatment. These pathologies continue to be confused with each other and with ectopic pregnancy tubal. Therefore, correct diagnosis facilitates appropriate management.

Embarazo ectópico cornual en paciente con anemia drepanocítica / Cornual pregnancy in a patient suffering from sickle cell anemia

El embarazo ectópico constituye una entidad patológica de gran incidencia en la actualidad, potenciada entre otras causas por el inicio cada vez más precoz de las relaciones sexuales. El embarazo cornual se debe a la implantación del blastocisto dentro del segmento de la trompa que penetra en la pared del útero o entre el ostium tubario y la porción proximal del segmento ístmico. Se presenta un caso de embarazo ectópico cornual, donde la ultrasonografía jugó un papel preponderante en su diagnóstico, ya que se trataba de una paciente con anemia drepanocítica, donde clínicamente no se podía descartar como causa de dolor abdominal una crisis vasooclusiva. Se realiza histerectomía parcial del cuerno derecho. La paciente evoluciona satisfactoriamente (AU)

Nowadays, ectopic pregnancy is a pathological entity of great incidence, which is increased, among other things, by each time earlier sexual relations. Cornual pregnancy is as a result of the implantation of the blastocyte within the segment of the fallopian tube that goes into the uterus wall or between the tubal ostium and the proximal portion of the isthmus. This is a case of a cornual pregnancy in which the use of ultrasonography played an essential role for its diagnosis, since it is about a patient suffering from sickle cell anemia, where it was not possible to clinically eliminate the possibility of an occlusive vessel crisis as the cause of abdominal pain. Subtotal hysterectomy of the right tube was performed. The patients evolution is satisfactory (AU)

Rotura uterina en gestante de 13 semanas: Embarazo ectópico intersticial / Uterine rupture in a 13-week pregnant woman: interstitial ectopic pregnancy

El embarazo ectópico intersticial es una entidad rara pero con una elevada tasa de mortalidad. El diagnóstico puede resultar difícil y tardío, dada la localización del embarazo en una porción intrauterina de la trompa de Falopio. La gestación puede evolucionar de manera asintomática hasta el segundo trimestre de la gestación, y debutar con una rotura uterina y shock hipovolémico por la proximidad del saco gestacional a la arteria uterina. El tratamiento suele consistir en una resección cornual por vía laparoscópica, aunque se individualizará en función de cada caso, primando ante todo la clínica de la paciente. Se expone el caso de un embarazo ectópico intersticial que debutó con rotura uterina a las 13 semanas de gestación.

Interstitial ectopic pregnancy is a rare but with a high mortality rate entity. Diagnosis can be difficult and late, given the location of the pregnancy in an intrauterine portion of the fallopian tube. Pregnancy can evolve asymptomatic until the second trimester, and debuting with uterine rupture and hypovolemic shock due to the proximity of the gestational sac to the uterine artery. Treatment usually consists of a laparoscopic cornual resection, although it will be individualized according to each case, giving priority to the patient clinic condition. The case of an interstitial ectopic pregnancy who presented with uterine rupture at 13 weeks of gestation is presented.