Sarcoid­like granulomatous inflammation in a carotid body paraganglioma: A case report and mini­review of the literature.

Sarcoid-like granulomatous inflammation (SLGI) is defined as the development of non-necrotizing epithelioid granulomas in patients who do not meet the criteria for systemic sarcoidosis. Its occurrence is known to be linked to diverse conditions, including malignancies, infections, the use of certain drugs and inorganic substances. To the best of our knowledge, the available literature to date lacks any description regarding SLGI in a paraganglioma. The present study describes the first case of SLGI in a carotid body paraganglioma (CBP). A 54-year-old female patient presented with anterior neck swelling for 27 years without any other symptoms. An ultrasonography revealed a multinodular goiter with retrosternal extension and a solid lesion on the right side of the neck measuring 40x30x22 mm, which was suggestive of a CBP. The patient underwent a total thyroidectomy, and the right-side cervical mass was resected via another longitudinal incision. A histopathological examination of the thyroid specimen revealed findings of a multinodular goiter. Sections from the right-side cervical mass confirmed the diagnosis of CBP accompanied by multiple, well-formed, small-medium sized, non-necrotizing epithelioid granulomas associated with multinucleated giant cells, indicative of SLGI. Non-necrotizing epithelioid cell granulomas (as with SLGIs), identical to those observed in sarcoidosis, may rarely be observed in patients who do not meet the criteria of systemic sarcoidosis; however, they have been observed in association with various neoplasms. It is thus crucial to distinguish them from actual sarcoidosis, as misdiagnoses may lead to severe consequences. The presence of SLGIs accompanying a paraganglioma is an extremely rare phenomenon. Due to this, it is difficult to conclude if it confers a better prognosis or not.

Gastroesophageal adenocarcinoma metastasizing to the chest wall: A case report and mini­review of the literature.

Subcutaneous metastasis from esophageal cancer (EC), particularly to the chest wall, is a very rare phenomenon. The present study describes a case of gastroesophageal adenocarcinoma that metastasized to the chest wall, invading the fourth anterior rib. A 70-year-old female presented with acute chest pain 4 months after undergoing Ivor-Lewis esophagectomy for gastroesophageal adenocarcinoma. A chest ultrasound revealed a solid hypoechoic mass on the right side of the chest. A contrast-enhanced computed tomography scan of the chest revealed a destructive mass on the right anterior fourth rib (7.5x5 cm). Fine needle aspiration revealed a metastatic moderately differentiated adenocarcinoma to the chest wall. Fluorodeoxyglucose (FDG)-positron emission tomography/computed tomography revealed a large FDG avid deposit on the right side of the chest wall. Under general anesthesia, a right-side anterior chest incision was made and the second, third and fourth ribs were resected with overlying soft tissues, including the pectoralis muscle and overlying skin. The histopathological examination confirmed a metastasized gastroesophageal adenocarcinoma to the chest wall. There are two common assumptions regarding chest wall metastasis from EC. The first one states that this metastasis can occur due to the implantation of the carcinoma during tumor resection. The latter supports the notion of tumor cell dissemination along the esophageal lymphatic and hematogenous systems. Chest wall metastasis from EC invading ribs is an extremely rare incident. However, its likelihood of occurrence should not be neglected following primary cancer treatment.

Primary pancreatic synovial sarcoma: Report of a rare case and review of the literature.

Synovial sarcoma is a mesenchymal spindle cell tumor. Primary pancreatic sarcomas are extremely rare. The present study describes a rare case of synovial sarcoma in the head of the pancreas. A 35-year-old male presented with left upper quadrant abdominal pain. An endoscopic ultrasound examination revealed a complex solid-cystic lesion in the pancreatic head. He had undergone pancreaticoduodenectomy (Whipple procedure). A histological examination yielded negative results for AE1/AE3, CD10, S100, CD34, desmin, smooth muscle actin, ß-catenin, CD117, HMB45, chromogranin and synaptophysin. However, the results were positive for TLEI and vimentin, which is consistent with synovial sarcoma. Synovial sarcoma is a soft tissue malignant tumor. Primary pancreatic sarcomas frequently present as large, high-grade tumors in the pancreatic head. Histologically, there are several types of synovial sarcoma, such as monophasic, biphasic and poorly differentiated. A histological examination is necessary for the diagnosis as the imaging findings are not specifically suggestive of synovial sarcoma. The preferred course of treatment is complete resection with wide margins, followed by adjuvant chemotherapy and/or radiotherapy. Primary mesenchymal tumors of the pancreas are extremely uncommon. As a result, a diagnosis requires careful evaluation. Surgical resection is the main modality of treatment.