Pseudosarcomatous fibromyxoid tumor (PSFT) is a rare pseudotumor of the genitourinary (GU) system that typically presents with gross hematuria. These tumors are benign, locally aggressive tumors. Metastasis has never been reported. Pathology is significant for spindle cell proliferation without malignant nuclear features that are commonly seen in sarcomas. Herein, we report a case of an 8-centi...

Superficial acral fibromyxoma (SAF) is a slow growing soft tissue tumor that mainly appears in the acral areas. Here, we report a case of a SAF with distinctive immunophenotype charachteristics. An 18-year-old female was referred to our clinic with the complaint of painless subungual nodule of great toe for a few months. The diagnosis of SAF was made according to histopathology and immunohistoc...

There is a large spectrum of tumors presenting as nodular lesions that may affect the subungual space. We report the case of a 62-year-old woman presenting with a rapidly growing nodular lesion under the nail of the first left toe. Non-invasive examinations using dermoscopy, ultrasonography and elastography were performed for the preoperative assessment of the lesion. The biopsy of the lesion r...

Ossifying fibromyxoid tumor (OFMT) is a rare soft tissue tumor of unknown histogenesis. OFMT is a recently described, mesenchymal neoplasm originally defined as a borderline or low-grade malignant lesion. It consists of chains and trabeculae of ovoid cells swimming in a fibromyxoid stroma [1,2]. OFMT combines the clinical course of both peripheral and central ossifying fibromas. Like POF, it is...

with a 6-month history of intermittent regurgitation of a mass into his mouth. Laryngoscopy revealed a smooth mass in the pharynx; this mass had prolapsed from the esophagus (●" Fig. 1a,b). Esophagogastroduodenoscopy revealed a sausage-shaped pedunculated mass covered with normal esophageal epithelium arising from the cervical esophagus just below the cricopharyngeus muscle and extending up to ...

Odontogenic myxomas (OM), also called odontogenic fibromyxomas, are rare tumours of the jawbones. They are benign tumours that can be locally invasive and aggressive, but seldom undergo malignant transformation and do not give rise to metastases. They are often asymptomatic and present as painless swelling. We present herein the case of a 24-year-old patient, with an incidental finding of a max...

Extraskeletal osteochondroma in the nape of the neck is rare and its pathological diagnosis is based on radiological and histopathological examination. It is vital that such a diagnosis be considered when a discrete, ossified mass is localised in soft tissues, even at atypical sites. Differential diagnoses include myositis ossificans, a lipomatous lesion, a pseudomalignant osseous tumour, an os...

Pseudosarcomatous fibromyxoid tumor (PFT), postoperative spindle cell nodule (PSN), sarcoma, and sarcomatoid carcinoma of the bladder are frequently difficult to distinguish histopathologically with significant differences in disease-related outcomes. A retrospective review of our pathology registry over the last 25 years identified 7 PFT, 10 PSN, 18 primary bladder sarcomas, and 17 sarcomatoid...

Plexiform fibromyxoma is a rare and distinctive benign mesenchymal neoplasm that occurs in the gastric antrum. This tumor has a potential for misdiagnosis as gastrointestinal stromal tumor (GIST). It causes mucosa and vascular ulcerations without advancement of the tumor. Cytological bland spindle cells within a variably myxoid stroma characterize the histology of the tumor. We report the case ...

Ossifying fibromyxoid tumor (OFMT) is a rare soft tissue tumor. OFMT mostly arises in subcutaneous tissue or skeletal muscle of the extremities and is extremely unusual in the mediastinum. OFMT is classified as typical, atypical, or malignant as tumor aggressiveness increases. Herein, we presented a case of atypical OFMT that developed in the mediastinum of a 43-year-old woman. Because of its p...