Angiomyomatous hamartoma in the inguinal lymph node: A case report and literature review

We present a case of a 57-year-old white female with a left upper thigh mass located at the previous surgical site of the resection of a 15 cm, 505-glipoma 10 years ago. Magnetic resonance imaging showed a 1.7 × 3.1 × 2.9 cm soft tissue mass within the subcutaneous adipose tissues of her left upper thigh at the site of previous lipoma resection. No muscle or bone invasion was identified. The clinical impression was lipoma versus liposarcoma. The mass was surgically removed, and gross examination showed a tan-pink, well-demarcated soft mass with scalloped edges noted within the yellowish adipose tissue. The histologic sections revealed several lymph nodes with parenchymal replacement by smooth muscle bundles, adipose tissue, and blood vessels with a fibrous stroma. Caldesmon and desmin highlighted the muscular component. CD34 and CD31 stained the vascular endothelium. To our best knowledge, this is the first case of angiomyomatous hamartoma at the site of a previously resected lipoma. This unexpected finding adds an unusual differential diagnosis along with the far more common recurrent soft tissue tumor.
Source: Human Pathology: Case Reports - Category: Pathology Source Type: research

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ConclusionThe diagnosis of liposarcoma with a lipomatous tumor is challenging, and resection should be considered for huge intra-abdominal lipomatous tumors.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
To evaluate if quantifying proton density fat fraction (PDFF) would be useful in separating lipoma, atypical lipomatous tumour (ALT) and liposarcoma in the extremities and trunk. In addition, differentiating ALT versus non-classical lipomas using magnetic resonance imaging (MRI)-based fatty acid composition (FAC) and three-dimensional (3D) texture analysis was tested.
Source: Clinical Radiology - Category: Radiology Authors: Source Type: research
Publication date: Available online 22 October 2018Source: Gynecologic Oncology ReportsAuthor(s): Kaori Kiuchi, Kiyoshi Hasegawa, Shoko Ochiai, Nobuaki Kosaka, Hajime Kuroda, Yasushi Kaji, Ichio FukasawaAbstractLiposarcoma of the uterine corpus is extremely rare. We performed a laparotomy on a 55-year-old woman with the complaints of abdominal distension and genital bleeding who was found to have a uterine tumor, 17 × 16 cm in diameter. The preoperative diagnosis was a lipoma or lipoleiomyoma of the uterine corpus. However, pathological examination revealed proliferation of mature adipocytes and lipoblast-like a...
Source: Gynecologic Oncology Reports - Category: OBGYN Source Type: research
Authors: Lichon S, Khachemoune A Abstract Lipomas are the most common soft tissue tumors of mesenchymal origin. They can appear anywhere on the body, and in rare cases they may present on the hands. Lipomas represent approximately 1% to 3.8% of all benign tumors in the hands. Typically, lipomas present in the fifth or sixth decade of life, occurring in both men and women. Lipomas may appear anywhere on the hand, often presenting as painless, slow-growing, and mobile masses. Symptoms may develop if local neurovascular structures are compressed. Differential diagnosis includes liposarcoma and fibrolipomatous hamartom...
Source: Acta Dermatovenerologica Alpina, Panonica, et Adriatica - Category: Dermatology Tags: Acta Dermatovenerol Alp Pannonica Adriat Source Type: research
We present a case of retrorectal lipoma, 15 cm × 10 cm × 8 cm in size, treated by the laparoscopic approach. The preoperative magnetic resonance imaging visualised a mass, 12 cm × 6.7 cm × 8.6 cm in diameter, in the retrorectal space, spreading toward the left obturator foramen. Surgery was indicated due to exclude malignant process certainly, because it is difficult to differentiate lipoma from low-grade liposarcoma on non invasive imaging. Laparoscopic extirpation of the tumour was performed. The overall operative time was 80 min. The diagnosis of lipoma was established on histological examination...
Source: Annals of Medicine and Surgery - Category: General Medicine Source Type: research
Authors: Johnson CN, Ha AS, Chen E, Davidson D Abstract Lipomatous soft-tissue tumors are the most common neoplasms encountered by physicians. They range from benign lipomas to high-grade liposarcomas. Unplanned excisions of sarcomas are commonly due to the presumptive diagnosis of lipoma and can be avoided by understanding their diagnostic magnetic resonance imaging appearance. Magnetic resonance images should be obtained for all soft-tissue masses that are deep to fascia or those>5 cm in subcutaneous tissue. Atypical lipomatous tumors present as large deep fatty masses and have a propensity for local recurrenc...
Source: The Journal of the American Academy of Orthopaedic Surgeons - Category: Orthopaedics Tags: J Am Acad Orthop Surg Source Type: research
Authors: Fricke A, Cimniak AFV, Ullrich PV, Becherer C, Bickert C, Pfeifer D, Heinz J, Stark GB, Bannasch H, Braig D, Eisenhardt SU Abstract BACKGROUND: Liposarcoma constitute about 13% of all soft tissue sarcoma and are associated with a high risk of metastases. As the preoperative differentiation between benign and malign lipomatous tumors is restricted to magnetic resonance imaging, computed tomography and biopsy, we performed a miRNA array to distinguish dedifferentiated liposarcoma patients from healthy controls and lipoma patients. METHODS: Blood samples of patients with dedifferentiated liposarcoma, heal...
Source: Cancer Biomarkers - Category: Cancer & Oncology Tags: Cancer Biomark Source Type: research
Abstract Ectopic cardiac fatty images are not rarely detected incidentally by computed tomography and cardiac magnetic resonance, or by exams focused on the heart as in general thoracic imaging evaluations. A correct interpretation of these findings is essential in order to recognize their normal or pathological meaning, focusing on the eventually associated clinical implications. The development of techniques such as computed tomography and cardiac magnetic resonance allowed a detailed detection and evaluation of adipose tissue within the heart. This pictorial review illustrates the most common characteristics of...
Source: Biomed Res - Category: Research Authors: Tags: Biomed Res Int Source Type: research
A 24-year-old woman presented with a 5-month history of a left flank mass that was painful on palpation. Magnetic resonance imaging revealed a 10.0 × 6.0 × 2.5 cm mass consistent with lipoma. A fatty lobulated mass was excised and subjected to H#38;E staining and immunohistochemical analyses. The specimen consisted of mature univacuolated adipocytic cells, with intermixed multivacuolated eosinophilic granular cells. No atypia or hyperchromasi a was identified. Most of the cells were S100 positive and Ki-67 immunonegative. A diagnosis of a lipoma-like hibernoma was rendered. Hibernomas are rare benign lipomatous...
Source: Case Reports in Oncology - Category: Cancer & Oncology Source Type: research
Aim: To establish the accuracy of magnetic resonance imaging (MRI) in distinguishing between benign and malignant lipomatous tumors; to evaluate the reproducibility of the MRI interpretation assessing the agreement between judgments of two radiologists with the same experience in soft-tissue sarcomas; to identify an association among MRI findings (size, depth, septa, nodules, signal homogeneity) and nature of the lesion. Materials and Methods: A total of 54 patients (28 men and 26 women), with a mean age of 56 (range=27-84) were included years. All subjects followed-up by the Multidisciplinary Sarcoma Group. The following ...
Source: In Vivo - Category: Research Authors: Tags: Clinical Studies Source Type: research
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