Teratoma de ligamento redondo, reporte de caso y revisión de la bibliografía / Round ligament teratoma, case report and literature review

Resumen ANTECEDENTES: El teratoma es un tumor casi siempre benigno, con una amplia variabilidad en su localización, extremadamente rara, en el ligamento redondo. CASO CLÍNICO: Paciente de 30 años, con antecedente de un embarazo a término. En la revisión ecográfica se reportó una lesión quística paraovárica izquierda de 46 x 35 mm, sin componente sólido, graso ni calcificaciones. En el examen ginecológico se palpó una masa por encima del útero, orientada hacia el lado izquierdo, no dolorosa. El resto del examen físico trascurrió sin otras alteraciones. La impresión diagnóstica inicial fue de teratoma abdominopélvico sustentada en la ecografía transvaginal en la que los ovarios se observaron normales, con una masa de ecogenicidad mixta de 50 x 40 x 46 mm, con áreas ecolúcidas y ecogénicas de intensidad variable hacia la fosa iliaca izquierda superior, sin contacto con el ovario. El ligamento redondo se seccionó a ambos lados de la masa y se extrajo sin complicaciones; el reporte histopatológico fue de: teratoma quístico maduro. CONCLUSIONES: El ligamento redondo es una localización infrecuente de los quistes dermoides que debe considerarse en los diagnósticos diferenciales de las masas pélvicas; es susceptible de tratamiento quirúrgico por vía laparoscópica.

Abstract BACKGROUND: Teratoma is an almost always benign tumor, with a wide variability in its location; its location in the round ligament is extremely rare. CLINICAL CASE: 30-year-old patient, with a history of a full-term pregnancy. On routine ultrasound examination, a 46 x 35 mm left paraovarian cystic lesion was reported, with no solid, fatty component or calcifications. In the gynecological examination a mass was palpated above the uterus, oriented to the left side, non-painful. The rest of the physical examination passed without other alterations. The initial diagnostic impression was of abdomino-pelvic teratoma supported by transvaginal ultrasound in which the ovaries were normal, with a mass of mixed echogenicity of 50 x 40 x 46 mm, with echolucent and echogenic areas of variable intensity towards the left superior iliac fossa, without contact with the ovary. The round ligament was sectioned on both sides of the mass and removed without complications; the histopathologic report was: mature cystic teratoma. CONCLUSIONS: The round ligament is an infrequent location of dermoid cysts that should be considered in the differential diagnoses of pelvic masses; it is amenable to surgical treatment laparoscopically.

Metástasis poco frecuente del carcinoma renal de células claras / Unusual metastasis of clear cell renal cell carcinoma

El ligamento falciforme es una reflexión peritoneal abdominal relacionada con la superficie anterior del hígado, que en su borde inferior libre contiene el ligamento redondo (LR); las lesiones únicas en este son infrecuentes. Presentamos un caso de metástasis única en el ligamento redondo en un paciente con antecedente de carcinoma renal de células claras. Realizamos una búsqueda bibliográfica para identificar casos similares. Nuestro paciente es un varón de 71 años con antecedente de carcinoma renal de células tratado con nefrectomía radical izquierda laparoscópica (estadio pT3a). En tomografía computarizada (TC) control a los 5 años se evidencia lesión focal en la periferia del segmento IVa, ante la sospecha de malignidad, se realiza laparotomía exploradora revisando toda la cavidad abdominal sin evidenciar otros implantes peritoneales. Se halla un nódulo de 1 cm en el ligamento redondo y se realiza su exéresis completa, con diagnóstico anatomopatológico de metástasis de células claras. El LR generalmente está afectado en casos de carcinomatosis peritoneal y solo existen dos casos publicados de metástasis únicas.

The falciform ligament is a peritoneal reflection that attaches the liver to the anterior abdominal wall; its lower edge contains the round ligament (RL). Single lesions in the RL are rare and usually correspond to perivascular epithelioid cell tumors. We present a case report of a single metastasis in the RL in a patient with clear cell renal cell carcinoma who underwent surgery five years ago. We conducted a literature review to identify similar cases and we found two case reports of single metastasis in the RL. Our patient was a 71-year-old man with a history of renal cell carcinoma who underwent left laparoscopic radical nephrectomy (stage pT3a), laparoscopic right adrenalectomy and total thyroidectomy due to multinodular goiter. The pathological examination revealed metastases of renal cell carcinoma. A computed tomography (CT) scan performed at 5-year follow-up showed a focal lesion in segment IVa with no FDG uptake in the PET scan, but as malignancy was suspected, the patient underwent exploratory laparatomy with no evidence of peritoneal implants. A 1-cm node was found in the round ligament that was completely resected. The pathological examination revealed metastatic clear cell renal cell carcinoma. The RL is involved in cases of peritoneal carcinomatosis and only two cases of single metastasis have been reported: in one patient with papillary renal cell carcinoma pT1aN0 and another one with left breast adenocarcinoma.

Oophoropexy to the round ligament after recurrent adnexal torsion / Ooforopexia ao ligamento redondo em um caso de torção anexial recorrente

Abstract Recurrent adnexal torsion is a rare gynecological emergency. We report a case of recurrent ipsilateral adnexal torsion in a woman with polycystic ovaries, previously submitted to a laparoscopic plication of the utero-ovarian ligament. Due to the recurrence after the plication of the utero-ovarian ligament, the authors performed a laparoscopic oophoropexy to the round ligament, which is an underreported procedure. The patient was asymptomatic for 1 year, after which she had a new recurrence and needed a unilateral laparoscopic adnexectomy. Since then, she regained the quality of life without any gynecological symptoms. Oophoropexy to the round ligament may be considered when other techniques fail or, perhaps, as a first option in selected cases of adnexal torsion, as it may allow the prevention of recurrence without increasing morbidity while preserving the adnexa.

Resumo A torção anexial recorrente é uma emergência ginecológica rara. Os autores descrevem um caso de torsão anexial unilateral recorrente em uma paciente com síndrome de ovário policístico, previamente submetida a plicatura do ligamento utero-ovárico por laparoscopia. Nesta circunstância, os autores decidiram realizar uma ooforopexia laparoscópica ao ligamento redondo, uma técnica pouco descrita na literatura. A paciente manteve-se assintomática durante 1 ano, período após o qual teve nova recorrência, tendo-se decidido realizar uma anexectomia laparoscópica unilateral. Desde então, ela recuperou a qualidade de vida sem qualquer sintoma ginecológico. A ooforopexia ao ligamento redondo é uma técnica que deverá ser considerada quando outras falham e, em casos selecionados de torsão anexial recorrente, poderá ser considerada a primeira abordagem, para prevenir a recorrência e preservar o anexo.

Presentación de un paciente con diagnóstico de fibroma del ligamento redondo hepático / Presentation of a Patient with Liver Round Ligament Fibroma Diagnosis

Los tumores del ligamento redondo del hígado son enfermedades poco frecuentes, con escasos reportes en la literatura mundial. Se presentó una paciente de 22 años con un tumor de ligamento redondo hepático, que cursó sin manifestación clínica y se halló de manera fortuita en una ecografía abdominal. Se realizó, además, laparoscopia y tomografía axial computarizada para precisar el diagnóstico preoperatorio. La cirugía tuvo éxito y la conclusión anatomopatológica fue: fibroma del ligamento redondo. La paciente evolucionó de forma satisfactoria en el postoperatorio, a los dos años de la intervención. Los tumores de esta localización parecieron ser de expresión clínica variable, y su diagnóstico fue posible solo por medio de estudios imagenológicos.

The tumors of the round hepatic ligament are uncommon diseases, with only a few reports around the world literature. A 22-year-old female patient with a tumor of the round hepatic ligament, with no clinical manifestations or lab alterations it presented. The lesion was incidentally detected by abdominal ultrasonography. The laparoscopy and computed tomography helped in making an accurate preoperative diagnosis. The patient was successfully treated with major surgery. The histopathologic results showed a fibroma of the round hepatic ligament. The patient´s postoperative progress was successful. These tumours have a variable clinical presentation, and its diagnosis is mostly make by ultrasound and laparoscopy to corroborate it, as in the case of the patient presented in this study.