Mielolipoma suprarrenal / Adrenal myelolipoma

Introducción: Los mielolipomas suprarrenales son tumores benignos inusuales compuestos por tejido adiposo maduro y células hematopoyéticas. Objetivo: Presentar un nuevo caso de mielolipoma suprarrenal y describir sus características clínicas, imaginológicas y la terapéutica aplicada. Caso clínico: Paciente femenina de 68 años de edad, con antecedentes de hipertensión arterial, diabetes mellitus tipo 2 y obesidad mórbida, que ingresó en el Servicio de Cirugía General del Hospital Militar Central Dr. Carlos J. Finlay, por presentar dolor en el hipocondrio derecho. Al examen físico presentaba ligero tinte ictérico de piel y mucosas, dolor abdominal difuso a predominio de hipocondrio derecho, sin reacción peritoneal, signo de Murphy negativo. En el tórax se auscultaron crepitantes bibasales y el murmullo vesicular disminuido. Los exámenes de analítica sanguínea demostraron pruebas hepáticas con valores elevados y eritrosedimentación acelerada. La tomografía axial computarizada abdominal reveló una tumoración, que se correspondía conla glándula suprarrenal derecha, que medía110x135x90 mm. Se realizó la suprarrenalectomía derecha que transcurrió sin complicaciones. El diagnóstico histopatológico fue mielolipoma suprarrenal. La paciente evolucionó satisfactoriamente. Conclusiones: El mielolipoma suprarrenal no presenta un cuadro clínico característico y en muchas ocasiones su hallazgo es incidental. La tomografía axial computarizada es la técnica de elección para el diagnóstico imaginológico de esta lesión. En las masas mayores de 6 cm está indicado el tratamiento quirúrgico, y la cirugía convencional, es un método útil para este fin(AU)

Introduction: Adrenal myelolipomas are unusual slow-growing benign tumors, composed of mature adipose tissue and hematopoietic cells. Objective: To present a new case of adrenal myelolipoma as well as to describe its clinical, imaging and applied therapeutic characteristics. Clinical Case: Female patient of 68 years old, with a history of hypertension, diabetes mellitus type 2 and obese, who was admitted to the General Surgery Service of the Hospital Militar Central Dr. Carlos J. Finlay, for presenting pain in the right hypochondrium. In the general physical examination, she presented a morbid obesity with a slight icteric dye of the skin and mucous membranes, and in the abdomen diffuse abdominal pain was observed, predominantly in the right hypochondrium without peritoneal reaction and negative Murphy sign; no palpated visceromegalias. Bi-basal crackles were heard in the thorax with diminished vesicular murmur. The blood tests performed showed liver tests with high values, and accelerated erythrosedimentation. In the computerized axial tomography an abdominal tumor was observed that impressed to correspond with the right adrenal gland, and that it mediates 110x135x90 mm. The right adrenalectomy was performed without complications. The histopathological diagnosis was an adrenal myelolipoma. The patient has evolved satisfactorily. Conclusions: Adrenal myelolipoma does not present a characteristic clinical picture, so its finding is often incidental. Computed tomography is the technique of choice for the diagnosis of this lesion. In the masses greater than 6 centimeters, surgical treatment is indicated, with conventional surgery being a useful route for this(AU)

Very rare giant adrenal myelolipoma: a tumor mimic

Adrenal myelolipoma is a very rare benign neoplasm usually unilateral, and nonsecreting, occurring in the adrenal gland which consist of fatty tissues and hematopoietic elements. Some cases of this type may cause symptoms like chronic abdominal pain however usually these tumors are small and asymptomatic. Surgery is the modality of treatment where there are severe symptoms with life threatening progression with size of tumor reaching more than 6 cm. Here we report an unusual case of a 59-year-old male with history of chronic abdominal pain from a growing right-sided large adrenal mass. With all possible hematological, histo-pathological as well as imaging investigations warranted a high suspicion for tumor mass, hence decided for surgically excision, which was both diagnostic as well as curative. The histopathological study of the excised mass confirmed the initial diagnosis of adrenal myelolipoma. Surgery is the diagnostic and curative modality of treatment for adrenal myelolipoma after all possible investigations to reach for a clinical diagnosis as well for proper planning for surgery. By this we can prevent complications like spontaneous rupture and hemorrhage of the mass, and subsequent cardiovascular shock. Management varies from individual to individual. Open radical adrenalectomy is the standard treatment for giant myelolipomas (size >10 cm), while the minimally invasive approach has been used in only few cases of small sized tumors. Although it is a benign tumor, surgery plays main role for symptomatic cases and high suspicion of malignancy.

Mielolipoma suprarrenal: doce años de experiencia en su diagnóstico, tratamiento y seguimiento / Adrenal myelolipoma: twelve-years' experience in diagnosis, treatment and follow-up

Introducción: Los mielolipomas suprarrenales son tumores benignos e infrecuentes, formados por tejido adiposo y hematopoyético. Se consideran incidentalomas porque se diagnostican fortuitamente en estudios de imagen investigando síntomas abdominales o lumbares o en chequeos rutinarios. Son hormonalmente inactivos casi siempre. Se operan si presentan gran tamaño y usualmente se mantienen estables durante su evolución natural. Objetivos: Identificar las características de los mielolipomas suprarrenales y describir su evolución natural. Métodos: Se realizó un estudio descriptivo retrospectivo en 17 pacientes con mielolipomas suprarrenales diagnosticados por tomografía axial computarizada entre enero de 2006 y abril de 2018. Se estudiaron variables clínicas, hormonales y tomográficas al inicio en 17 pacientes y evolutivamente en 5 pacientes no operados. Se utilizaron medidas de resumen para las variables cualitativas (número y porcentajes) y para las cuantitativas (media y desviación estándar). Resultados: La edad promedio fue 52,9 años y la distribución por sexo: 13 mujeres y 4 hombres (razón 3,2:1). Se indicó tomografía axial computarizada en 11 pacientes por síntomas dolorosos. El tamaño promedio fue 5,6 cm. En 8 tumores el diámetro fue de 6 cm y más. En 9 pacientes se realizó adrenalectomía laparoscópica. Durante la evolución natural, que promedió 5 años y 1 mes, una paciente presentó crecimiento de sus dos masas bilaterales; la derecha se extirpó por sobrepasar los 6 cm. Conclusiones: Los mielolipomas suprarrenales fueron benignos, alcanzaron gran tamaño y provocaron síntomas dolorosos. Fueron hormonalmente inactivos en su mayoría. Evolutivamente, el crecimiento fue muy infrecuente y no hubo transformación maligna ni desarrollo de hiperfunción endocrina(AU)

Introduction: Suprarenal myelolipomas are infrequent benign tumors formed by adipose and hematopoietic tissue. They are considered to be incidentalomas because they are found and diagnosed accidentally in imaging studies intended for abdominal or lumbar problems, or in routine checkups. Suprarenal myelolipomas are almost always hormonally inactive. They are operated on when they are large, and they usually remain stable during their natural evolution. Objectives: Identify the characteristics of suprarenal myelolipomas and describe their natural evolution. Methods: A retrospective descriptive study was conducted of 17 patients with suprarenal myelolipomas diagnosed by computerized axial tomography from January 2006 to April 2018. Clinical, hormonal and tomographic variables were analyzed initially in 17 patients and evolutionarily in 5 non-operated patients. Summary measurements were used for qualitative variables (number and percentages) and for quantitative variables (mean and standard deviation). Results: Mean age was 52.9 years and sex distribution was 13 women and 4 men (ratio of 3.2:1). Computerized axial tomography was indicated for 11 patients with pain symptoms. Average size was 5.6 cm. In 8 tumors the diameter was 6 cm or more. Laparoscopic adrenalectomy was performed on 9 patients. During natural evolution, which averaged 5 years and 1 month, one female patient experienced growth of her two bilateral masses, and the one on the right side was removed for it exceeded 6 cm. Conclusions: The study suprarenal myelolipomas were large, benign and caused pain symptoms. Most were hormonally inactive. In evolutionary terms, growth was very infrequent and there was no malignant transformation or development of endocrine hyperfunction(AU)

Retroperitoneal Laparoscopic Surgery for Giant Adrenal Myelolipoma / 中国微创外科杂志

Objective To explore the surgical features of retroperitoneoscopic excision of adrenal myelolipoma with diameter larger than 6 cm. Methods We retrospectively analyzed clinical data of 28 cases of giant adrenal myelolipoma from March 2010 to December 2015.The diameter of tumor was 6.0-13.7 cm (mean, 8.5 cm).There were 10 left-sided cases and 18 right-sided cases. During the retroperitoneoscopic excision of adrenal myelolipoma , four trocars were used .Two silk sutures were twisted as a loop to entangle one side of the tumor and then pulled it .Blood vessel on the surface of tumor was sealed and cut by ultrasonic scalpel . Adrenal gland was totally or partially removed and the tumor was resected completely . Results The operations were successful in all the 28 cases without hemorrhage during or after the surgery , conversion to open surgery , or injury of adjacent organs .The operation time was 52-117 min (mean, 67.5 min) and the blood loss was 45-110 ml during operation (mean, 60.5 ml).Patients took food 1-2 days after operation and ambulated 3-5 days after operation .The indwelling time of retroperitoneal drainage tube was 3-6 d (mean, 4.1 d).The postoperative hospitalization time was 6 -9 d (mean, 7.5 d). Conclusions Giant myelolipoma leads to seriously changed normal anatomy and is hard to be exposed during operation .Only when the important anatomical landmarks , large blood vessels and adrenal glands are focused , can the operation be safe and controllable .

A Case of Bilateral Adrenal Myelolipomas with Congenital Adrenal Hyperplasia / 대한내과학회지

Adrenal myelolipoma (AML) is a rare, usually benign, and nonfunctioning tumor. About 7-15% of adrenal incidentalomas are AMLs, composed of normal hematopoietic elements and mature adipose tissue. AML is usually unilateral and < 4 cm. It is often discovered incidentally on abdominal computed tomography or magnetic resonance imaging. It is related to a chronic increase in adrenocorticotropic hormone, such as that observed in patients with congenital adrenal hyperplasia, Cushing disease, Conn's syndrome, and pheochromocytoma. Here, we report a 28-year-old man diagnosed with non-salt-losing congenital adrenal hyperplasia with huge bilateral AMLs and a literature review.

Adrenal myelolipoma with congenital 17a-hydroxylase deficiency: a pedigree report and review of the literature / 中华内分泌代谢杂志

Objective To analyse the clinical and pathological characteristics of congenital adrenal hyperplasia (CAH) with adrenal myelolipoma (AML),and to improve the awareness of CAH.Methods The P450c17a gene in a pedigree with CAH and the clinical and pathological characteristics of three sisters of the pedigree with CAH and adrenal myelolipoma were studied;and the pertinent literatures reported abroad were analyzed and summarized.Results (1) A heterozygous point mutation 1178 base A to T in exon 6,and a heterozygous deletion mutation 1 457-1 465 bases TCGACTCTT of exon 8 were detected in P450c17 (CYP17) gene of three sisters of the pedigree with CAH.(2) The clinical characteristics of three sisters were hypertension,hypokalemia,primary amenorrhea,and gonadal dysgenesis.Without regular treatment after the diagnosis of CAH,the three sisters experienced many years of elevated serum ACTH levels,and developed AML.Conclusion The long-term high ACTH level plays an important role in the development of AML,although the exact mechanism of CAH with adrenal myelolipoma remains still unclear.CAH patients require long-term regular treatment.

Mielolipoma, una lesión quirúrgica poco frecuente de la glándula adrenal / Myelolipoma, a rare surgical lesion of the adrenal gland

El mielolipoma adrenal es un tumor benigno poco frecuente, compuesto de tejido adiposo maduro y elementos hematopoyéticos diversos. Estos tumores pueden localizarse en las glándulas adrenales aunque también pueden encontrarse en sitios extradrenales. Las manifestaciones clínicas son variadas tales como sangramientos digestivos, dolor abdominal en los flancos, masa abdominal palpable, hematuria, hemorragia retroperitoneal y pérdida de peso. Entre los métodos diagnósticos figuran el ultrasonido, la tomografía axial computarizada y la resonancia magnética. La resección quirúrgica es el tratamiento de elección, sobre todo cuando haya sintomatología o en tumores mayores de 4 cm, por el riesgo de ruptura espontánea con hemorragia retroperitoneal. Presentamos la historia clínica de una paciente de 42 años de edad con antecedentes de dolores en hipocondrio derecho de aproximadamente un año de evolución, la cual sufrió un cólico nefrítico que cedió con tratamiento médico. Posteriormente en la consulta externa, en el examen fisico, se constata una masa tumoral en hipocondrio derecho, la cual fue diagnosticada por ultrasonido y tomografía axial computarizada como un tumor adrenal. Se intervino la paciente y se confirma el diagnóstico. La evolución posoperatoria fue buena y la paciente continúa asintomática. El objetivo de este trabajo es presentar un nuevo caso de esta enfermedad, poco frecuente, la cual fue diagnosticada en una paciente de 42 años de edad y realizar una breve revisión de la literatura(AU)

Mielolipoma is a rare benign tumor of the adrenal gland, which is formed by mature adipose tissue and several hematopoietic elements. They are generally located in the adrenal glands, although they can occur in other sites. The clinical manifestations are varied such as gastrointestinal bleeding, abdominal pain in the flanks, abdominal mass, retroperitoneal hemorrhage, hematuria and loss of weight. Among the diagnosing methods are ultrasound, computerized axial tomography and magnetic imaging resonance. The surgical excision is the treatment of choice, mainly when symptoms are present or in case of over 4 cm tumors, because of the spontaneous rupture risk with retroperitoneal hemorrhage. The objective of this paper was to present a new case of this rare disease together with a brief literature review. A 42 years-old female with a history of abdominal pain located in the right upper quadrant of the abdomen, who suffered nephritic colic that was successfully treated. The physical exam at the outpatient service revealed a tumorous mass diagnosed as adrenal tumor by means of ultrasound and axial computerized tomography. She was operated on and the diagnosis was confirmed. Her postoperative recovery was good and the patient is still asymptomatic(AU)

Adrenal myelolipoma and lipoma

Introduction: Adrenal myelolipomas and lipomas are extremely rare benign tumors. They are usually asymptomatic and in most cases are incidentally found at radiological examinations or autopsy. Symptoms such as abdominal pain and increasing girth occur only when the tumor grows large. Objectives: To evaluate and treat this situation. Subjects: We report the case of a giant adrenal myelolipoma with dimensions of 9 x 8 x 8cm and a giant adrenal lipoma with dimensions of 20 x16 x 12cm. Firstly, in a 48 year old man admitted to hospital on the 18 January 2005 without symtoms of adrenal lipoma or adrenal mylolipoma and another one is a 25 year old man who was hospitalized on the 8 December, 2004 with pain in the right hip since two months prior, normal blood pressure and undiscovered tumor by hand. Result: Other tests were normal. Looking at the CT scan images, a dark and consistent block located between the liver and right kidney can be seen. It pushed and turned the right kidney. Both of them were resected by laparoscopy. Conclusion: We discuss the prevalence, clinical features, diagnosis and treatment of these uncommon tumors.

Two Cases with Adrenal Myelolipoma Treated by Surgical Resection / 대한내분비학회지

An increasing number of incidental adrenal masses are found during the evaluation for unrelated problems, which is the result of the development of sensitive noninvasive methods for the imaging of abdominal lesions, such as ultrasonography, computed tomographic scanning, and MRI. When there is no evidence of adrenocortical or medullary dysfunction for such adrenal masses, they are commonly referred to as "incidentalomas". Among these incidentalomas, adrenal myelolipoma is a rare, benign, endocrinologically inactive tumor, the histological structure of which consists of mature adipose tissue cells and normal hemopoietic tissues resembling bone marrow. Even though most eventually prove to be nonhyperfunctioning adrenocortical adenomas, we must not exclude a more serious pathology. Because of the rarity of adrenal myelolipoma, its natural history, proper prognostic considerations and treatment recommendations still need to be investigated. We experienced 46 year-old man with abdominal discomfort, and a 26 year-old man with no specific symptoms, have large incidentalomas (>5 cm) in adrenal sites, detected by abdominal sonography for routine health work-up. The ACTH, cortisol, renin, aldosterenone, metanephrine, VMA and tumor marker levels were normal, which was suggestive of nonfunctional adrenal tumors. Surgical treatments were performed for rule out malignant adrenal tumors due to the tumor size (>5 cm) and hemorrhage within the tumors. The surgical pathology was that of adrenal myelolipomas. An adrenal myelolipoma is a rare, benign, nonfunctional adrenal tumor, but only three cases have been reported in Korea. We report two cases of adrenal myelolipoma found incidentally by surgical treatment for a large tumor size (>5 cm).

Imaging and Histopathologic Basis of Adrenal Myelolipoma / 实用放射学杂志

Objective To investigate the histologic basis of imaging manifestations on adrenal myelolipoma and evaluate the value of various imaging modalities in diagnosing the tumor.Methods The imaging manifestations and pathological features of 21 cases of adrenal myelolipoma proved by postsurgical pathology were retrospectively analysed.Results Histologically,the myelolipoma presented hematopoietic elements amidst fatty tissue and showed indefinite border.The myeloid tissue was well vascularized and were adherent closely to normal adrenal gland.Both CT and MRI detected a single mass with irregular plaque or streak of bone marrow tissues between fatty components.The capsule of the tumor was not apparent,but rarely it presented an irregular local “capsule”which was composed of adrenal tissue with compression surrounding the tumor.Enhanced-scan found foggy enhancement in fatty tissue and enhancement of bone marrow tissue which made myeloid plaque enlarged and the edge misted.Ultrasonography demonstrated highly echogenic fat-containing ball of adrenal,while intravenous urography only showed translocation and renal axis alteration of homolateral kidney.Conclusion CT scan appears to be the most accurate qualitative modality to demonstrate adrenal myelolipoma while coronal and sagittal section scanning on MRI can make its localization more exact.Ultrasonography is also an important way in detecting the mass whereas intravenous urography and abdominal plain film should not be used to be the qualitative criterion.

Adrenal Myelolipoma Confirmed by Fine Aspiration Biopsy / 대한내분비학회지

Adrenal myelolipomas are rare, benign tumors cornposed of mature fat and bone marrow elements. Most are small, asymptomatic tumors found incidentally at postmortem examination, Fine needle aspiration biopsy can be used to confirm the diagnosis and avoid an unnecessary operation. We report a case of adrenal myelolipoma confirmed by fine needle aspiration biopsy. A 77-year-old woman with complaining of upper abdominal pain for 2 days was found to have an adrenal mass. She took dexamethasone frequently for 3 years due to multiple arthralgia. Ultrasono-graphy showed a 6cm-sized, suprarenal mass and a stone in the gall bladder with thickened wall. Computed tomography and magnetic resonance imaging scan also presented a suprarenal mass. Endocrinologic results were within normal limits. Adrenal myelolipoma was confirmed by computed tomography-guided fine needle aspiration biopsy without surgery.

Adrenal myelolipoma associated with gastric cancer, Report of a Case / 日本農村医学会雑誌

A 56- year-old woman visited our hospital complaining of right hypochondralgia. X-ray and endoscopic examinations revealed Borrmann 2 type gastric cancer in the anterior wall of an upper part of the stomach. Ultrasonography showed an echogenic mass in the suprarenal area. The mass which had septal formation within it, was about the same in density as fat on computerized tomography, and was hypovascular fed by the right inferior adrenal artery on angiography. These findings suggested that the mass might be adrenal myelolipoma. After total gastrectomy and right adrenectomy were done, histopathological study confirmed that the case is adrenal myelolipoma associated with Borrmann 2 type gastric cancer. In Japanese literature, only 54 cases of surgically resected adrenal myelolipoma have been reported, and this is the second case of adrenal myelolipoma associated with gastric cancer.