Rarely Malignant: Causes & Reasons

Possible Causes for Rarely Malignant

The prognosis of this rare malignancy is poor and the overall 5-year survival is around 15%. [hindawi.com]

The prognosis of this rare tumor is poor. We describe a case of this rare pulmonary malignancy and the role of adjuvant chemotherapy in the management and outcome. 2. [hindawi.com]

Discussion Pulmonary blastoma is a rare primary lung malignancy, comprising only 0.25–0.5% of all malignant lung neoplasm [1]. [hindawi.com]

Pleuropulmonary Blastoma

Zareifar, Karimi, Tasbihi, Abdolkarimi, and Geramizadeh: Pleuropulmonary blastoma is a rare malignancy in young adult and childhood ABSTRACT Pleuropulmonary blastoma (PPB) [kjco.org]

Abstract Pulmonary blastoma is a rare primary malignancy of the lung, with few cases reported in children. [pubs.rsna.org]

Keywords: Pleuropulmonary blastoma, Pediatric, Cancer INTRODUCTION Pleuropulmonary blastoma (PPB) is a rare childhood cancer account for 0.25% to 0.5% of malignant lung neoplasms [kjco.org]

Endometrial Stromal Sarcoma

Rubin, MD, Professor and Chief of the Division of Gynecologic Oncology, University of Pennsylvania Health System, responds: Endometrial stromal sarcoma is a rare malignancy [oncolink.org]

Endometrial stromal sarcoma (ESS) is a rare malignant neoplasm of the uterus. [ncbi.nlm.nih.gov]

Endometrial Stromal Sarcomas (ESSs) are very rare malignant tumors of the uterus that form in the connective tissue (stroma) of the endometrium. [patientslikeme.com]

Struma Ovarii

Most of the struma ovarii are benign; rarely can they undergo malignant transformation. [ncbi.nlm.nih.gov]

Malignant struma ovarii is a very rare malignant ovarian teratoma. [ncbi.nlm.nih.gov]

The present of malignant transformation in struma ovarii is exceedingly rare. Malignant struma ovarii is usually asymptomatic and infrequently diagnosed preoperatively. [ncbi.nlm.nih.gov]

Pancreatoblastoma

Pancreatoblastoma in childhood is a very rare malignant tumor, but is considered to have a relatively good prognosis because of its low metastatic potential. [ncbi.nlm.nih.gov]

Most cases of pancreatoblastoma, a rare malignant epithelial tumor of the pancreas, are seen in the pediatric population. [ncbi.nlm.nih.gov]

Pancreatoblastoma is a rare malignant tumor of the pancreas mostly diagnosed in childhood. [ncbi.nlm.nih.gov]

Primary Malignant Melanoma of the Cervix

Primary vaginal malignant melanoma: A rare entity with review of literature. [cancerjournal.net]

Primary malignant melanoma of the cervix is a rare cervical malignancy. [ncbi.nlm.nih.gov]

With an incidence of 7 in 1 million people, this rare malignancy represents 5.2% of all human melanoma cases. [iovs.arvojournals.org]

Ovarian Cystic Teratoma

Carcinosarcoma in dermoid cyst of ovary: An extremely rare malignant transformation. [ijpmonline.org]

Mature cystic teratoma (MCT) is the commonest germ cell neoplasm of the ovary but malignant transformation is a rare occurrence (1-2%). [hindawi.com]

Among a wide variety of malignant tumors deriving from an MCT, malignant transformation into carcinoid tumor is extremely rare and is not easy to diagnose preoperatively. [mattioli1885journals.com]

Proliferating Trichilemmal Cyst

Rarely, malignant transformation can occur but most lesions show a well-demarcated lobular squamous epithelium with minimal cytological atypia. Treatment is by excision. [gpnotebook.co.uk]

Note: ‡A super rare malignant counter part is described; approximately 40 cases are reported in the english literature. [1] Gross Classic location: head ~90%. [2] Microscopic [librepathology.org]

Rarely, malignant transformation leads to distant metastases. No absolute clinical criteria can distinguish malignant from benign proliferating pilar tumors. [humpath.com]

Ependymoblastoma

Ependymoblastoma (EBL) is a rare malignant CNS tumor of early childhood, listed as a subgroup of primitive neuroectodermal tumors (PNET) in the 2007 WHO Classification of [ncbi.nlm.nih.gov]

Medulloepithelioma is a rare malignant tumor arising in cerebral hemispheres. [ncbi.nlm.nih.gov]

Leiomyosarcoma

In conclusion, primary pancreatic leiomyosarcoma is a rare and highly malignant tumor associated with poor prognosis. [ncbi.nlm.nih.gov]

Leiomyosarcomas (LMS) are rare sinonasal malignant tumours with 20 cases of nasal LMS previously reported in the literature. [ncbi.nlm.nih.gov]

Abstract Primary leiomyosarcoma of vascular origin is a rare malignant smooth muscle tumor. [ncbi.nlm.nih.gov]

Malignant Neoplasm of the Bone

Benign bone lesions, fortunately, are more common compared with the (relatively) rare malignant neoplasms of bone. [pedsinreview.aappublications.org]

Dedifferentiated chondrosarcoma (DDCS) is a rare but highly malignant primary bone neoplasm, which is resistant to radiotherapy and chemotherapy. [ncbi.nlm.nih.gov]

Malignant (cancerous) tumors are more rare than benign tumors - and more dangerous. [cedars-sinai.edu]

Chondrosarcoma

As an extremely rare malignant neoplasm, only 12 mesenchymal chondrosarcoma (MC) arising in kidney have been reported to date. [ncbi.nlm.nih.gov]

Chondrosarcoma is a rare malignant tumor of bone. [ncbi.nlm.nih.gov]

Chondrosarcoma is a rare malignant tumor of cartilage commonly arising in the pelvis, proximal femur, and humerus, but quite uncommon in the small bones of the hand. [ncbi.nlm.nih.gov]

Anorectal Malignant Melanoma

[…] extremely rare malignancy that is thought to arise from melanocytes in the mucosa around the anorectal junction. [ncbi.nlm.nih.gov]

Discussion First reported by Moore DW in 1857 [ 1 ], AMM is an extremely rare malignancy that is thought to arise from melanocytes in the mucosa around the anorectal junction [ncbi.nlm.nih.gov]

AMM constitutes about 0.05% of all anorectal malignancies [ 2, 3 ]. [ncbi.nlm.nih.gov]

Medulloepithelioma

Medulloepithelioma is a rare malignant tumor arising in cerebral hemispheres. [ncbi.nlm.nih.gov]

Purpose: Medulloepithelioma is a rare, malignant tumor that typically arises in the periventricular region of the cerebral hemispheres or the ciliary body of the eye. [pennstate.pure.elsevier.com]

Carcinoma of Ampulla of Vater

Return to Article Details Poorly-Differentiated Signet-Ring Cell Carcinoma of the Ampulla of Vater: Report of a Rare Malignancy [serena.unina.it]

May 09, 2014 Ampullary Adenocarcinoma: A Rare Malignancy Ampullary adenocarcinoma is a relatively rare cancer, representing approximately 0.2% of all gastrointestinal (GI) [cancertherapyadvisor.com]

(in Korean) [2] Acharya, M.N., Panagiotopoulos, N., et al. (2013) Poorly-Differentiated Signet-Ring Cell Carcinoma of the Ampulla of Vater: Report of a Rare Malignancy. [scirp.org]

Malignant Peripheral Nerve Sheath Tumor

Malignant peripheral nerve sheath tumor is a rare malignancy, accounting for 3% to 10% of all soft-tissue sarcomas. [ncbi.nlm.nih.gov]

Orbital and periorbital presentation is rare for malignant peripheral nerve sheath tumors. [ncbi.nlm.nih.gov]

Gastrointestinal malignant peripheral nerve sheath tumors are rare and malignant peripheral nerve sheath tumor of the colon is even rarer. [ncbi.nlm.nih.gov]

Olfactory Neuroblastoma

Olfactory neuroblastoma is a rare malignant tumor of the nasal cavity arising from the olfactory neuroepithelium. [ncbi.nlm.nih.gov]

Olfactory neuroblastoma (ONB), also known as esthesioneuroblastoma, is a rare malignant head and neck cancer thought to originate from the olfactory epithelium. [ncbi.nlm.nih.gov]

Olfactory neuroblastoma (Esthesioneuroblastoma) is a rare malignant tumour arising from olfactory epithelium. [ncbi.nlm.nih.gov]

Atypical Teratoid Rhabdoid Tumor

Although MASC and ATRT are both rare malignancies, they do not share the same genetic and molecular profiles. [ncbi.nlm.nih.gov]

Atypical teratoid rhabdoid tumor is a rare malignant neoplasm that represents 1%-2% of all pediatric central nervous system tumors. [ncbi.nlm.nih.gov]

Atypical teratoid/rhabdoid tumors (AT/RTs) are rare, malignant brain tumors which occur almost exclusively in infants and young children. [ncbi.nlm.nih.gov]

Malignant Fibrous Histiocytoma

Hepatic malignant fibrous histiocytoma is a rare malignant mesenchymal tumor. The variable features of clinical presentations and images make the diagnosis difficult. [ncbi.nlm.nih.gov]

Abstract Malignant fibrous histiocytoma (MFH) and fibrosarcoma (FS) of bone are rare malignant tumours and contentious entities. [ncbi.nlm.nih.gov]

J Neoplasm 2017, 1:2. doi: 10.21767/2576-3903.100007 Abstract Primary pulmonary soft tissue sarcomas are a type of rare malignant tumor that could be misdiagnosed as intimal [neoplasm.imedpub.com]

Hemangiosarcoma

Hemangiosarcoma of the spleen is a rare malignant tumor. Prognosis is poor and is usually related to splenic rupture. [ncbi.nlm.nih.gov]

[…] he·man·gi·o·sar·co·ma ( hē-man'jē-ō-sar-kō'mă ), A rare malignant neoplasm characterized by rapidly proliferating, extensively infiltrating, anaplastic cells derived from [medical-dictionary.thefreedictionary.com]

Hemangiosarcoma is a rare malignant neoplasm of vascular origin. [symptoma.com]

Malignant Peritoneal Mesothelioma

Malignant peritoneal mesothelioma (MPM) is an aggressive rare malignancy associated with asbestos exposure. [ncbi.nlm.nih.gov]

Malignant peritoneal mesothelioma in children is a very rare disease and has a poor prognosis. [ncbi.nlm.nih.gov]

Abstract 238. https://www.shmabstracts.com/abstract/a-rare-cause-of-ascites-malignant-peritoneal-mesothelioma/. [shmabstracts.com]

Ameloblastic Carcinoma

Case Report First Online: 03 October 2016 181 Downloads 1 Citations Abstract Ameloblastic carcinoma (AC) is a rare malignant odontogenic tumor with poor prognosis. [link.springer.com]

Keywords Ameloblastic carcinoma, Ameloblastoma Introduction Ameloblastic Carcinoma (AC) is a rare malignant odontogenic tumour that has features of ameloblastoma intermingled [rroij.com]

Ameloblastic carcinoma is a rare malignant odontogenic carcinoma that has metastatic potential, and because of its rare incidence, there are few reports focusing on its radiologic [ncbi.nlm.nih.gov]

Ameloblastic Fibrosarcoma

Free article Abstract Introduction: Ameloblastic fibrosarcoma (AFS) is a rare malignant odontogenic tumor. [pubmed.ncbi.nlm.nih.gov]

Ameloblastic fibrosarcoma (AFS) is a rare malignant odontogenic tumor. [ncbi.nlm.nih.gov]

Gliosarcoma

This case illustrates the ability of FNA to adequately diagnose a rare malignancy in the appropriate clinico-radiologic setting. [ncbi.nlm.nih.gov]

Gliosarcoma is a rare malignant, biphasic brain tumor composed of glioblastoma multiforme and sarcomatous components. [ncbi.nlm.nih.gov]

Gliosarcoma is a rare, malignant, biphasic brain tumor formed by both glioblastoma and sarcomatous components. [ncbi.nlm.nih.gov]

Malignant Melanoma of the Vulva

Histologically the diagnosis of an amelanotic malignant melanoma of the vulva was established. We review the literature about this rare malignant tumor. [ncbi.nlm.nih.gov]

BACKGROUND: Melanoma in situ is a rare malignant lesion of the vulva. The standard treatment is surgical excision. [ncbi.nlm.nih.gov]

Malignant melanoma of the vulva is a rare malignant disease. Women in their 50s, 60s, and 70s are predominantly affected. [symptoma.com]

Fallopian Tube Carcinoma

Fallopian tube carcinoma is a rare malignancy and is often treated in a similar manner as ovarian carcinoma. [ncbi.nlm.nih.gov]

A rare primary malignant tumor of fallopian tube. [ccij-online.org]

Abstract Primary fallopian tube carcinoma (PFTC) is a rare malignancy, but its incidence has been rising during the last decades and varies between 2.9/1,000,000 and 5.7/1,000,000 [ncbi.nlm.nih.gov]

Yolk Sac Tumor

We discuss the role of upfront surgery where possible followed by chemotherapy as a safe alternative to chemotherapy alone for the treatment of this rare malignancy. [doi.org]

Vaginal yolk sac tumor is a rare malignant germ-cell tumor occurring most commonly in young girls. [ncbi.nlm.nih.gov]

Yolk sac tumor (YST) is a rare malignancy typically occurring in children. [ncbi.nlm.nih.gov]

Malignant Parotid Gland Neoplasm

A rare malignant neoplasm. tags: parotid tumor carcinoma This user also sharing Recommended Register now, join the community for free access. [medtube.net]

Abstract Salivary gland oncocytomas are very rare tumors with very few malignant cases reported in the literature. [ispub.com]

It is a relatively rare epithelial malignant tumor. [omicsonline.org]

Thyroid Lymphoma

Original Article Introduction Primary thyroid lymphoma (PTL) is a rare malignant tumor, accounting for 5% of all thyroid malignancies (1,2). [tcr.amegroups.com]

Primary thyroid lymphoma (PTL) is a rare cause of thyroid malignancy of non-thyroid origin which is highly treatable without surgery but early diagnosis is important requisite [ncbi.nlm.nih.gov]

PTL is a rare malignancy. Nevertheless, it frequently presents diagnostic and therapeutic challenges. [ncbi.nlm.nih.gov]

Adamantinoma

Adamantinoma is a rare malignant neoplasm arising most often in the tibia and is locally aggressive. [ncbi.nlm.nih.gov]

Adamantinoma of long bones is a rare malignant tumor composed of cells with epithelial characteristics in various differentiation patterns surrounded by fibrous cells. [ncbi.nlm.nih.gov]

Adamantinoma of the long bones is a rare, low-grade malignancy with a marked predilection for the tibia and is usually seen in patients during the second to fifth decades [ncbi.nlm.nih.gov]