Pleuropulmonary blastoma (PPB) is a rare aggressive malignant tumor of infancy and early childhood. The tumor arises in the lung and pleura and is regarded as a pulmonary dysontogenetic or embryonic neoplasm. Four types are defined in literature. Type I PPB is a rare, cystic lung neoplasm in infants characterized by subtle malignant changes and a good prognosis. Recurrences after type I PPB are...

Tumors of the pancreas that contain substantial cystic components include mainly mucinous cystic neoplasm, intraductal papillary mucinous neoplasm, solid pseudopapillary tumor, and cystadenomas (which encompass microcystic, macrocystic/oligocystic, and rare solid serous adenomas). Microcystic adenoma of the pancreas is a tumor that is benign in nature. Malignant transformation in the tumor with...

BACKGROUND Malignant Mesothelioma is a rare primary neoplasm affecting the serosal membranes. During its relative short course, this malignant neoplasm can give local and, rarely, distant haematogenous metastases in different organs. The reported metastatic sites include liver, lung, heart, brain, thyroid, adrenals, kidneys, pancreas, bone, soft tissue, skin and lymph nodes. CASE PRESENTATION...

Epitheloid hemangioendothelioma (EHE) is an uncommon angiocentric neoplasm of intermediate malignant potential. This tumor is frequently seen in the lungs and liver, but its presentation in the oral cavity is rare. In the oral cavity, gingival region is the common sites of occurrence. We report a rare case of epitheloid hemangioendothelioma in a 48-year-old male, presenting as a growth in the u...

Solid-pseudopapillary neoplasm of the pancreas (SPPNP) is a primary epithelial neoplasm of the exocrine pancreas with borderline malignant potential. The unusual features included the ‘giant’ size and the absence of metastases/ capsular or vascular invasion despite the large size and predominantly solid nature. At two years following complete excision, she is asymptomatic and the imaging shows ...

Solid epididymal masses can be broadly classified into three categories: inflammatory mass, benign neoplasm, and malignant neoplasm. Examples of inflammatory processes include infectious epididymitis, fibrosis, sperm granuloma, and autoimmune disease. Benign neoplasms include adenomatoid tumor or leiomyoma. Malignant neoplasms include adenocarcinoma, embryonic rhabdomyosarcoma, and seminoma. Wh...

Hemangiopericytomas (HPC) are uncommon tumors that originate from perivascular cells of capillary vessels. HPC are about 1% of all vascular tumors and can be found in the head-neck region with an incidence between 16% and 33%. HPC is a neoplasm of uncertain malignant potential; it can behave as an aggressive tumor with metastases and increased mitotic activity or as a relatively benign neoplasm...

A solid pseudopapillary neoplasm of the pancreas is a rare pancreatic tumor with a low malignant potential. It typically occurs in young women. Solid pseudopapillary neoplasm associated with extra-pancreatic and pancreatic anomalies are occasionally reported. We report a case of an solid pseudopapillary neoplasm with a concomitant variation of the common hepatic artery in a 43-year-old woman. T...

purpose: true neoplasm (adenocarcinoma) of retinal pigment epithelium (rpe) is very rare since it can be misdiagnosed as intraocular malignant melanoma it is of importance to know the clinical and pathologic aspects of this neoplasm. here, we report a case of adenocarcinoma of rpe. methods: case report. results: a 60-year-old man with progressive loss of the vision of the right eye was enucleat...

OBJECTIVES To evaluate the role of chest computed tomography (CT) in patients with head and neck squamous cell carcinoma (HNSCC) and to determine the optimal timing and predictive factors for positive findings. DESIGN Retrospective analysis. SETTING Tertiary referral center. PATIENTS Two hundred seventy screening chest CT scans performed in 192 patients with HNSCC during a 42-month period...