ABSTRACT
Fetus in fetu (FIF) is a rare congenital anomaly in which a malformed fetus is incorporated within the body of its twin. It was first described in the late 18th century and has an incidence of 1:500,000 live births. In most cases, the diagnosis is made in infants or young adults. To date, the oldest patient reported in the literature was 47 years old. We describe the case of a 65-year-old patient with FIF, now the oldest reported in the literature. Our patient meets all the diagnostic criteria for FIF, including the presence of a limb in advanced formation inside the lesion. The treatment was surgical excision. FIF should be considered in the differential diagnosis of abdominal masses, typically recognized in infancy. Symptoms arise from mass effects. Surgical resection should be performed due to the potential for malignant transformation.
Subject(s)
Humans , Male , Aged , Twins, Conjoined , Congenital Abnormalities/diagnostic imaging , Fetus/abnormalities , Retroperitoneal SpaceABSTRACT
Antecedentes: Fetus in fetu (FIF) es una rara anomalía congénita de gemelos monocigotos asimétricos, donde el gemelo parásito se desarrolla anormalmente dentro del cuerpo del gemelo huésped. Actualmente hay menos de 200 casos reportados a nivel mundial siendo este el segundo caso en Honduras. Caso clínico: Se reporta el caso de un paciente masculino, recién nacido a término en la sala de maternidad del Hospital San Felipe, quien a su nacimiento se observó distensión abdominal, hernia umbilical, hernia inguino-escrotal izquierda y tumoración en el hipocondrio izquierdo por lo que se decide realizar una radiografía anteroposterior toracoabdominal revelado un tumor en la región izquierda del abdomen con presencia de calcificaciones. Se refiriere al Hospital Escuela Universitario donde se le efectuó un ultrasonido abdominal total con reporte de masa heterogénea de 5 cm3 de volumen con componente cálcico en su interior, que tuvo que ser correlacionada con tomografía axial computarizada con reconstrucción 3D dando como resultado masa heterogenia con huesos axiales y apendiculares en su interior compatible con FIF. Se realizó intervención quirúrgica con resección de tumoración retroperitoneal y sus anexos sin secuelas ni complicaciones por lo cual se da alta médica. Conclusión: Aunque el FIF es una enfermedad muy rara, el tratamiento de elección será la resección de la masa y su pronóstico es favorable cuando la masa se ubica en el área retroperitoneal. Se puede observar que la tomografía tridimensional es una técnica de imagen útil para la diferenciación entre un FIF y un teratoma en el diagnóstico preoperatorio...(AU)
Subject(s)
Humans , Male , Female , Pregnancy , Infant, Newborn , Adult , Twins, Monozygotic , Congenital Abnormalities/diagnosis , Twins, Conjoined , StillbirthABSTRACT
Abdominal mass is a common finding in children, either palpable or radiologically evident surprisingly. Some of them are rare tumors. Functional active tumors are rarely palpable but present with varied arrays of symptoms. In this series authors are discussing few rare cases with atypical presentations such as- teratoma arising from adrenal gland, teratoma presenting with hypertension, fetus in fetu (Girl and Boy child), adrenocortical tumor presenting as precocious puberty and adrenal pheochromocytoma with features of cushing's syndrome. These atypical presentations may have pose a challenge in diagnosis and management for the treating team with first time occurrence specifically if they are handling them for first time.
ABSTRACT
Fetus–in–fetu (FIF) is an uncommon pathology with an incidence of 1 in 500000 births. Less than 200 cases have been reported worldwide. Multiple theories are proposed regarding emyogenesis 1,2. The anomaly can be antenatally diagnosed or present at later age as abdominal lump or complications due to pressure symptoms. We report a case of antenatally diagnosed fetus in fetu which was removed in neonatal age.
ABSTRACT
Fetus-in-fetu (FIF) is a rare congenital condition in which a fetiform mass is detected in the host abdomen and also in other sites such as the intracranium, thorax, head, and neck. This condition has been rarely reported in the literature. Herein, we report the case of a fetus presenting with abdominal cystic mass and ascites and prenatally diagnosed as meconium pseudocyst. Explorative laparotomy revealed an irregular fetiform mass in the retroperitoneum within a fluid-filled cyst. The mass contained intestinal tract, liver, pancreas, and finger. Fetal abdominal cystic mass has been identified in a broad spectrum of diseases. However, as in our case, FIF is often overlooked during differential diagnosis. FIF should also be differentiated from other conditions associated with fetal abdominal masses.
Subject(s)
Abdomen , Ascites , Diagnosis, Differential , Diagnostic Errors , Fetus , Fingers , Head , Laparotomy , Liver , Meconium , Neck , Pancreas , Peritonitis , ThoraxABSTRACT
Fetus-in-fetu is a rare condition in which a fetiform calcified mass is often present in the abdomen of its host; a newborn or infant. We present the case of a three-month-old male baby with acute intestinal obstruction and abdominal mass. X-ray abdomen and ultrasonogram revealed a cystic mass with calcification. On laparotomy, a well encapsulated retroperitoneal mass causing high intestinal obstruction was identified. Total excision of the mass was done. Diagnosis of fetus-in-fetu was confirmed on histopathology. Postoperative recovery was uneventful.
ABSTRACT
Fetus in fetu is an very rare condition in which a vertebrate fetus is incorporated within its twin. Although a number of cases were reported at 3rd trimester of gestation or postnatally, the authors present a retroperitoneal fetus in fetu with 9 x 7 x 6 cm sized cystic mass that was diagnosed at 2nd trimester using ultrasonography and confirmed on a computed tomography scan after birth. The mass was successfully excised postnatally and consistent with a fetus in fetu by pathological confirmation. Solid mass was surrounded by a fluid-containing sac and showed highly ordered organogenesis around an axial vertebral column.
Subject(s)
Humans , Pregnancy , Diagnosis , Fetus , Organogenesis , Parturition , Spine , Ultrasonography , VertebratesABSTRACT
Fetus in fetu is an extremely uncommon cause of abdominal mass in the neonate with an incidence of 1 in 500,000 births. This is thought to occur when a monozygotic, diamniotic twin is incorporated into the body of its sibling early in embryonic development. A case of retroperitoneal fetus in fetu in a 3 day old male infant is reported, the excised round mass contained the vertebral column, 2 feet, 2 arms, small penis and testis. The presence of vertebral axis and organogenesis differentiates it from a teratoma. More than 100 cases of fetus in fetu have been reported, most of which have been in the abdomen. We report a case of a well developed fetus in the retroperitoneal area of a neonate delivered at term.
Subject(s)
Female , Humans , Infant , Infant, Newborn , Male , Pregnancy , Abdomen , Arm , Axis, Cervical Vertebra , Embryonic Development , Fetus , Foot , Incidence , Organogenesis , Parturition , Penis , Siblings , Spine , Teratoma , TestisABSTRACT
Fetus in fetu is a poorly understood and rare congenital malfomation. This is a rare form of monozygotic twin that asymmetric twin becomes internalized in the other twin thus acting endoparasitically. Fetus in fetu can be distinguised from teratoma, because of vertebral column, skeletal axis, and well-differentiated internal organs. We present the findings in the two cases of fetus in fetu that were diagnosed with prenatal ultrasonography. After birth, we removed fetus-like structures and confirmed by pathologic examination. Fetus-like structures were consisted of vertebral column, extremities, and other well-developed internal organs.
Subject(s)
Humans , Axis, Cervical Vertebra , Extremities , Fetus , Parturition , Spine , Teratoma , Twins, Monozygotic , Ultrasonography, PrenatalABSTRACT
Fetus in fetu is a very rare congenital abnormality in which one vertebrate fetus is enclosed within the abdomen of another fetus. With advancing ultrasound imaging technique, a few case of prenatal diagnosis is reported recently. A case of fetus in fetu with 6 X 6 X 4 cm sized cystic mass in the fetal retroperitoneum was diagnosed prenatally using ultrasound and confirmed by ultrasound and computer tomogram after delivery. This mass was removed completely from delivered baby and finally confirmed fetus in fetu by pathologic examination. Solid portion in this mass was composed of vertebral organization with limb bud, well-developed organ system.
Subject(s)
Abdomen , Congenital Abnormalities , Fetus , Limb Buds , Prenatal Diagnosis , Ultrasonography , VertebratesABSTRACT
Fetus in fetu is a very rare pathologic feature consisting of a parasitic twin included within the body of the other twin. Fetus in fetu within about 7X6X5 cm sized cystic mass in the fetal retroperitoneum was detected and diagnosed during antenatal ultrasound and confirmed by computed tomography scan postnatally. The mass was removed after birth. The cyst contain yellowish serous fluid with two solid masses. Two solid masses were confirmed fetus in fetu by gross and microscopic pathologic examination. The larger one showed well-developed and organized internal organ.
Subject(s)
Humans , Fetus , Parturition , Prenatal Diagnosis , Ultrasonics , Ultrasonography , Ultrasonography, PrenatalABSTRACT
Among 60 children with teratoma, forty-three (71.7 percent) were girls and 17 (28.3 percent) boys. Primary sites were sacrococcygeal in 30 patients (50 percent), retroperitoneal in 12 (20 percent), ovarian in 11 (18.3 percent), testicular in 3 (5 percent), and one in each of nasopharyngeal, gastric, hepatic and pancreatic (1.6 percent, respectively). Fifty-five (91.7 percent) teratomas were benign and 5 (8.3 percent) malignant. Malignant teratomas were detected only at sacrococcygeal region (16.7 percent). Older than 2 months of age at diagnosis, presence of urinary and colonic obstructive symptoms, multiple masses and elevated serum alpha-fetoprotein were indicators of malignancy in sacrococcygeal region. Tumor size, presence of calcification, and gross appearance (cystic or solid) did not correlate with malignant nature. Thirteen (21.7 percent) cases were associated with other anomalies. For the immature teratoma, the operative resection without adjuvant chemotherapy was enough. Three malignant cases were survived, one with chemotheapy for 3 years and the others without chemotherapy for 5 and 10 years.
Subject(s)
Child , Female , Humans , alpha-Fetoproteins , Carcinoma, Embryonal , Chemotherapy, Adjuvant , Colon , Diagnosis , Drug Therapy , Endodermal Sinus Tumor , Sacrococcygeal Region , TeratomaABSTRACT
Fetus-in-fetu is a very rare condition in which a malformed monozygotic twin lies within the body of its fellow, usually in the retroperitoneal cavity. Today it is generally accepted that the distinction between fetus-in-fetu and teratoma is largely determined by whether an axial skeleton system is present. We experienced a 6 months female infant who was admitted to our unit because of incidental abdominal mass. a plain abdominal X-ray showed that the mass contained completely formed fetal skeletal system. It was removed by surgery. By pathologic and radiologic study of mass, We confirmed as a fetus-in-fetu. We report the case with brief review of related literatures.