Aged ; Bone Neoplasms ; secondary ; Carcinoma, Hepatocellular ; pathology ; Humans ; Liver Neoplasms ; pathology ; Male ; Paranasal Sinus Neoplasms ; secondary

Prostate cancer shows a strong predilection to spread to the bones. Cancer metastasis is composed of a complex cascade that involves a variety of critical steps beginning with detachment from the primary tumor and ending with growth of the tumor at a distant site. Varus factors produced by the bone microenvironment contribute to the pathogenesis of cancer skeletal metastasis. This review summarizes the multifactorial mechanisms and complex cellular interactions that take place inside the bone metastatic microenvironment.
Bone Neoplasms ; secondary ; Humans ; Male ; Neoplasm Metastasis ; Prostatic Neoplasms ; pathology

Epithelioid hemangioendothelioma is a neoplasm of vascular origin with a low-to-intermediate malignant potential and is one of the rare sarcomas arising from the liver. Its etiology is unknown and its clinical outcome is unpredictable. There is no generally accepted therapeutic strategy because of its rarity and the variable natural course between hemangioma and angiosarcoma. We report a case of a 64-year old woman who underwent hepatic resection due to epithelioid hemangioendothelioma in the right lobe that progressed to extrahepatic metastases of the bone, pleura, and peritoneum 22 months later. However, after resection there was no primary hepatic recurrence.
Bone Neoplasms/diagnosis/pathology/secondary ; Female ; Hemangioendothelioma, Epithelioid/*diagnosis/pathology/*secondary ; Hepatectomy ; Humans ; Liver Neoplasms/*diagnosis/pathology ; Lung Neoplasms/diagnosis/pathology/secondary ; Middle Aged ; Tomography, X-Ray Computed

Adenocarcinoma ; pathology ; secondary ; surgery ; Adult ; Bone Marrow Neoplasms ; diagnosis ; secondary ; Female ; Humans ; Postoperative Period ; Stomach Neoplasms ; pathology ; surgery

Unlike other non-gynecologic solid tumors, such as breast cancer, lung cancer, metastasis to bone from endometrial carcinoma is rare, metastasis to extremity is extremely rare. We report a 51-year-old multiparous woman with FIGO Stage IVb Grade 2 endometrial adenocarcinoma which metastasized to left lower extremity bone. She received an amputation of left lower extremity below the knees, and a total abdominal hysterectomy and bilateral salpingo-oophorectomy, and followed by systemic chemotherapy, radiation therapy to the pelvis and progestational agent. She had a complete response to above treatments, and disease-free survival for 10 months. After recurrence, she received chemotherapy, radiotherapy and progestational agent once again. She had lived 56 months and is still alive by the time of report. Metastasis of endometrial carcinoma to extremity bone can rarely occur and should be considered when the patient with endometrial carcinoma complained of unexplained pain and swelling associated with extremity bone.
Bone Neoplasms ; pathology ; secondary ; surgery ; Endometrial Neoplasms ; complications ; pathology ; surgery ; Female ; Humans ; Middle Aged

Adolescent ; Bone Marrow Neoplasms ; secondary ; Humans ; Male ; Prostatic Neoplasms ; pathology ; Sarcoma ; pathology

Follicular carcinoma of the thyroid rarely manifests itself as a distant metastatic lesion, and, when present, is usually found in flat bones. A soft tissue metastasis is extremely rare, and synchronous metastases to the bone and soft tissue is not reported in the literature so far. We report such a case of a 42-yr-old male, who presented with a goiter, scalp and forearm soft tissue swellings, and, fine needle aspiration cytology of all these swellings revealed a follicular neoplasm. A wide excision of the forearm swelling was carried out and the histopathology was consistent with features of metastatic follicular carcinoma of the thyroid. The main stay of treatment is surgical resection of the primary tumor. The various modalities of treatment of metastasis is discussed with a review of literature.
Adenocarcinoma, Follicular/*pathology/surgery ; Adult ; Bone Neoplasms/pathology/*secondary/surgery ; Human ; Male ; Soft Tissue Neoplasms/pathology/*secondary/surgery ; Thyroid Neoplasms/*pathology/surgery ; Treatment Outcome

Bone Neoplasms ; diagnosis ; secondary ; Carcinoma, Renal Cell ; diagnosis ; secondary ; Humans ; Kidney Neoplasms ; pathology ; Male ; Middle Aged ; Patella ; Sternum

Aged ; Carcinoma, Renal Cell ; secondary ; surgery ; Female ; Humans ; Kidney Neoplasms ; pathology ; surgery ; Nephrectomy ; Parietal Bone ; Skull Neoplasms ; secondary ; surgery

Perivascular epithelioid cell tumors (PEComas) are unusual mesenchymal neoplasms composed of histologically and immunohistochemically distinct perivascular epithelioid cells (PECs). Although PEComas have the potential to behave in a malignant fashion, malignant PEComas arising from the retroperitoneum are extremely rare. A 68-year-old woman presented with a painful palpable mass in her left upper abdomen. Computed tomography of the abdomen showed a 9 cm sized heterogeneous mass in left para-aortic space and multiple hypervascular nodules in the liver. 18F-fludeoxyglucose-PET/CT showed multifocal hypermetabolic lesions in retroperitoneum, liver, and skeletal bones. Percutaneous needle biopsies were done on the retroperitoneal and hepatic mass. Both specimens were positive for human melanoma black-45 (HMB-45) on histological and immunohistochemical staining which was compatible with PEComas. Herein, we report a rare case of retroperitoneal PEComa with multiple metastases involving liver and bone at initial diagnosis that exhibited aggressive behavior and resulted in a devastating prognosis.
Aged ; Bone Neoplasms/pathology/radiography/secondary ; Female ; Fluorodeoxyglucose F18 ; Humans ; Liver Neoplasms/pathology/radiography/secondary ; Perivascular Epithelioid Cell Neoplasms/*diagnosis/pathology ; Positron-Emission Tomography ; Tomography, X-Ray Computed