A Case Report of Atypical Spindle Cell Lipomatous Tumor of the Tongue

Nasal spindle cell tumor: A case report and literature review

BACKGROUND

Spindle cell tumors are rare and can occur in any organ or tissue. Due to their rarity the clinicopathological features and diagnostic protocols have not been adequately studied. However, it has become necessary to develop differential diagnosis of spindle cell tumors. Here, we report a case of a nasal spindle cell tumor diagnosed at our hospital in attempt to contribute to this gap in literature.

KEY POINTS FROM THE CASE

A male in his 30s was admitted to our hospital with nasal obstruction that had persisted for several years. Electronic fibrolaryngoscopy revealed a smooth neoplasm within the nasal cavity.

MAIN LESSONS TO BE LEARNED FROM THIS CASE REPORT

The results of this case emphasize that spindle cell tumors have large morphological variations, and it is difficult to determine the origin of tumor cells using hematoxylin and eosin staining alone. Therefore, it is necessary to improve the immunohistochemistry and combine it with clinical symptoms to diagnose the disease.

A case of liposarcoma with osteolysis of the maxilla as the first symptom and review of the literature

Liposarcomas are extremely rare in the oral cavity and mainly observed in the buccal mucosa, tongue, floor of the mouth, gingiva, and lips, while those occurring in the jaws have not been reported so far. Clinically, the initial presentation of liposarcoma is usually a painless soft tissue mass. The aim of this study was to report a case of liposarcoma with osteolysis of the maxilla as the first symptom, and review the relevant literature to summarize its clinical features, imaging features, pathological features and treatment methods.

Lumbar paraspinal atypical spindle cell/pleomorphic lipomatous tumor: A report of a rare case

The atypical spindle cell/pleomorphic lipomatous tumor (ASPLT) was classified as a new tumor by the World Health Organization (WHO) in 2020. The tumor is benign and commonly occurs in the limbs. Paraspinal presentations are rare. A 38-year-old man presented at our clinic complaining of sudden onset back pain. No neurological deficit was found. The magnetic resonance imaging (MRI) revealed a well-defined heterogeneous mass in the left psoas muscle, from L1 to L3 extending over the L1 and L2 neuroforamen. The tumor was totally excised. Pathology led to an ASPLT diagnosis. Clinical symptoms improved and there was no postsurgical neurological deficit. This case of ASPLT, located in an uncommon location and present an unusual cluster of symptoms, could be treated by surgical excision, usually the first-treatment strategy. Totally, removal was achieved because there was a clear morphological margin. The risk of metastatic dissemination was minimal, though there remains a nonnegligible risk of local recurrence.

A case report on atypical spindle cell lipomatous tumor: A rare entity

Introduction

Atypical spindle cell lipomatous tumor (ASPLT), a separate entity for the group of benign/low grade adipocytic neoplasm that is characterized by adipocyte adequacy and the presence of lipoblast-like cells and spindle cells at varying degrees.

Case presentation

Here, we report a rare case of 60 years old male with atypical spindle cell lipomatous tumor in the anterior abdominal wall.

Discussion

Histopathology is the gold standard for establishing the diagnosis and grade of soft tissue tumor and consistent radiology-pathology correlation is essential to avoid any diagnostic pitfalls [1]. Ultrasound is preferred as an initial investigation for superficially located lesions.

Conclusion

ASPLT show a wide variety of microscopic features, and differential diagnosis is important and difficult. Recognition of morphologic clues and immunohistochemistry/molecular tests to confirm the diagnosis.

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Histopathology is the gold standard for establishing the diagnosis and grade of soft tissue tumor.

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Ultrasound is preferred as an initial investigation for superficially located lesions.

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Atypical spindle cell lipomatous tumor (ASPLT), a separate entity for the group of benign/low grade adipocytic neoplasm.

Atypical spindle cell lipomatous tumor of the tongue: A rare entity arising in an unusual location

Atypical spindle cell/pleomorphic lipomatous tumor (ASCPT) constitutes an emerging entity of lipomatous tumors. It is a benign tumor. It occurs typically in limbs and limb girdles. The occurrence in oral cavity is unusual. The diagnosis of this neoplasm is challenging. Herein, we report a case of ASCPT arising in the tongue.

ASCPT is a benign adipocytic neoplasm characterized by the presence of adipocyte cells, lipoblast cells, spindle cells at varying degrees, and a myxoid or collagenous extracellular matrix. Local recurrence is rare but there is no risk for dedifferentiation. The occurrence in the oral cavity and in the tongue is exceptional. The diagnosis in this localization is challenging. The patient has generally an excellent prognosis after a complete excision.

An Atypical Pleomorphic Lipomatous Tumor Presenting As Groin Mass

Cutaneous tumors with adipocyte differentiation are frequently excised by surgeons in their daily clinical practice and sometimes less common histological diagnoses arise. Knowledge of different pathological entities and their natural history is essential for better patient management.

Atypical spindle cell/Pleomorphic lipomatous tumor (ASPLT) is a recent group included in the WHO classification. We report a case of a middle-aged man with an atypical pleomorphic lipomatous tumor in an unusual location.