Mielolipoma suprarrenal, revisión de literatura en México a propósito de dos casos / Adrenal myelolipoma, review of the literature in Mexico apropos of two cases

Introducción: los mielolipomas suprarrenales (ML) son neoplasias benignas poco frecuentes constituidas por tejido adiposo y mieloide. Clínicamente asintomáticas, suelen ser diagnosticados incidentalmente. En México existen solo 32 casos publicados de ML, presentándose en pacientes de entre 37 a 65 años, siendo la relación hombre-mujer 1:1.1, el síntoma más comúnmente reportado es dolor abdominal inespecífico, y la cirugía abierta es el principal abordaje quirúrgico empleado en nuestro país (89%). Caso clínico: presentamos una recopilación de la literatura actual sobre ML en México, además de dos casos clínicos de pacientes con ML: un hombre de 67 años con enfermedad diverticular y una mujer de 40 años con dolor en hipocondrio; en ambos se realizó resección tumoral, midiendo 9.5 cm y 13.3 cm, respectivamente. Conclusiones: presentamos dos casos nuevos en nuestro país que corresponden a incidentalomas. En ambos casos la cirugía se realizó para confirmar el diagnóstico, así como para prevenir posibles complicaciones.

Background: Adrenal myelolipomas (ML) are rare benign neoplasms compound of adipose and myeloid tissue. Clinically they are usually asymptomatic, being diagnosed generally by incident. In Mexico, there are only 32 published cases of ML, these occur between 37 and 65 years, with the male-female ratio being 1:1.1, clinically they present with abdominal or lumbar pain, open surgery being the main surgical approach (89%). Clinical case: We made a literature review of ML in Mexico and present two clinical cases: a 67-year-old man in followup for diverticular disease and a 40-year-old woman with pain in the left upper quadrant. In both cases, tumor resection was performed measuring 9.5 cm and 13.3 cm long respectively. Conclusions: We present two new cases in our country that correspond to incidentalomas. In both cases, surgery was performed to confirm the diagnosis, as well as to prevent possible complications

Mielolipoma adrenal gigante: Adrenalectomía derecha laparoscópica / Giant adrenal myelolipoma. Right laparoscopic adrenalectomy

El mielolipoma es un tumor adrenal poco frecuente. Se trata de un tumor benigno no funcionante compuesto por tejido adiposo y hematopoyético. Presentamos el caso de una paciente de 33 años de edad con diagnóstico de incidentaloma adrenal de 14 cm de diámetro no funcionante. Los estudios imagenológicos presentaban características sugestivas de mielolipoma. Debido a la naturaleza benigna del tumor se decidió el abordaje laparoscópico. La anatomía patológica informó un mielolipoma de 444 gramos. La paciente evolucionó favorablemente en el postoperatorio. El abordaje laparoscópico para la resección del mielolipoma gigante fue factible y exitoso.

Adrenal myelolipoma is a rare, benign, non-functioning tumor. It is composed by fat and hematopoietic tissues. We present the case of a 33-year-old woman with diagnosis of a 14 cm diameter non-functioning right adrenal incidentaloma, with imaging features suggestive of myelolipoma. Based on the benign nature of the tumor, laparoscopic resection was performed. Histopathology showed a myelolipoma, weighting 444 grams. The patient evolved with an uneventful postoperative period. Laparoscopic adrenalectomy for a giant myelolipoma was feasible and successful.

Left-sided giant adrenal myelolipoma secreting catecholamine.

Adrenal myelolipoma (AML) is a rare benign tumor composed of mature adipose and hematopoietic tissue. Most of these patients are asymptomatic and the tumors are non-secreting. We present a case with a large functional adrenal myelolipoma, wherein the patient was hypertensive and biochemistry revealed increase in 24 hours urinary Vanillylmandelic Acid (VMA), a metabolite of catecholamine. The mass was removed surgically and diagnosed as adrenal myelolipoma on histopathological examination. Both his blood pressure and urinary VMA returned to normal following surgery, which suggested that the mass was functioning and was secreting catecholamine. To the best of our knowledge, a catecholamine secreting adrenal myelolipoma has been reported in the literature only once previously. The association of hypertension and adrenal myelolipoma may not be entirely coincidental, as it may be associated with secreting catecholamine, as seen in our case. We also review the literature on functioning adrenal myelolipoma.

Mielolipoma suprarrenal gigante: reporte de un caso y revisión de la literatura / Giant Adrenal myelolipoma: a case report and literature review

Presentamos un caso de mielolipoma suprarrenal gigante, para ilustrar la expresión y el manejo de esta rara patología. Este tumor benigno poco frecuente, compuesto de tejido hematopoyético maduro y tejido adiposo en proporciones variables, generalmente se diagnostica de forma incidental y sólo tiene indicación quirúrgica en aquellos casos en los que producen síntomas o alcanza grandes dimensiones. Describimos el caso de una paciente de 56 años, asintomática, con el hallazgo incidental de tumor suprarrenal de grandes dimensiones, tratado mediante resección quirúrgica en el servicio de Cirugía III del Hospital Universitario de Caracas

Case report of giant adrenal myelolipoma to describe the presentation and the treatment for this rare entity. This uncommon benign tumor, composed of variables proportions of mature hemopoyetic tissue and fat, is diagnosed incidentally and has indication of surgery only in the few cases in which it turns symptomatic or it reach big dimensions. We report the case of a 56-years-old asymptomatic female, in who is incidentally detected a giant adrenal tumor, surgically resected at the Hospital Universitario de Caracas, Servicio Cirugia III

Giant adrenal myelolipoma associated with beta-thalassemia: a case report

Adrenal myelolipomas are rare benign tumors composed of mature adipose tissue and hematopoietic elements that resemble bone marrow. They most commonly occur in the adrenal gland, yet only comprise about 3% of all adrenal tumours. Although several hypotheses have been proposed as to the cause of myelolipoma, the causative process is still not clearly understood. The majority of myelolipomas are asymptomatic. It usually represents as accidental finding in imaging studies. There are some case reports about coincidence of adrenal giant myelolipoma with RBC disorders. In this case report, we present a beta thalassemic 26 year old male patient who had giant adrenal myelolipoma

Mielolipoma gigante: relato de caso e revisão da literatura / Giant myelolipoma: case report and review of the literature

Mielolipomas são tumores benignos raros compostos por tecido adiposo maduro e por elementos hematopoiéticos. Geralmente são menores que 5 cm e assintomáticos, embora lesões maiores podem apresentar-se com dor ou hemorragia retroperitoneal. Descrevemos um caso de mielolipoma gigante, associado à hemorragia retroperitoneal após biópsia por punção com agulha fina

Myelolipoma of adrenal gland in association with occult malignancy--a case report.

Myelolipoma is an unusual lesion of adrenal gland in which ectopic marrow tissue is present. This case is being present because of its rarity.