MyMedR

Abstracts of the 5th International Academy of Pathology Malaysian Division, Annual Scientific Meeting 2018: Mediastinal and Breast Pathology

Malays J Pathol, 2018 Dec;40(3):373-387.

PMID: 30580371

No abstract available.

Matched MeSH terms: Breast Neoplasms/pathology*; Mediastinal Neoplasms/pathology*

Fulltext Sinonasal malignant melanocytic melanoma: a rare case report

Pathma L, Philip R, Harvinder S, Manjit S

Med J Malaysia, 2008 Jun;63(2):152-3.

PMID: 18942306 MyJurnal

Malignant melanocytic melanoma is a rare sinonasal malignancy. We present a case report of an elderly lady who presented with epistaxis and intranasal polyps. Computed tomography revealed soft tissue mass in the oropharynx, nasopharynx, left ethmoid and entire maxillary sinus. The mass was removed via endoscopic medial maxillectomy. Histopathology examination revealed sinonasal melanocytic malignant melanoma. At present 17 months postoperatively she is symptom free with no recurrence and under regular follow up.

Matched MeSH terms: Maxillary Sinus Neoplasms/pathology*; Nasopharyngeal Neoplasms/pathology*; Nose Neoplasms/pathology*

Fulltext Synchronous adenocarcinoma of caecum, transverse colon and jejunum

Leong BD, Ramu P, Kumar VM, Chuah JA

Med J Malaysia, 2008 Jun;63(2):148-9.

PMID: 18942304 MyJurnal

Synchronous cancers are defined as malignant tumours that occur simultaneously, each of which must be distinct with no possibility of one being the metastasis of the other. A 65 year old gentleman presented to us with two month history of epigastric pain associated with anaemia, loss of appetite and weight. He has no history of malignancy in his family. Colonoscopy revealed tumours at transverse colon and caecum. Intra-operatively, tumours were sited at caecum, transverse colon and jejunum. Tumours were diagnosed as synchronous adenocarcinoma histopathologically with loss of expression of MLH1 and MSH2. From literature search, this is the first reported triple synchronous tumours of the caecum, transverse colon and jejunum. We believe that this gentleman developed triple synchronous tumour through the sporadic MSI pathway.

Matched MeSH terms: Cecal Neoplasms/pathology*; Colonic Neoplasms/pathology*; Jejunal Neoplasms/pathology*

Unusual presentation of chorion epithelioma malignum

Subramanyam C, Lal M

Med J Malaya, 1970 Jun;24(4):306-7.

PMID: 4248354

Matched MeSH terms: Nasopharyngeal Neoplasms/pathology*; Nose Neoplasms/pathology*; Uterine Neoplasms/pathology

Primary anorectal malignant melanoma: A clinical, radiology and pathology correlation

Bohan S, Ramli Hamid MT, Poh KS, Chow TK, Chan WY

Malays J Pathol, 2020 Dec;42(3):461-467.

PMID: 33361730

INTRODUCTION: Primary gastrointestinal melanomas are mucosal malignancies that arise from melanocytes in the oropharynx, rectum, and anus. Anorectal malignant melanoma (ARMM) are exceedingly rare, accounting for less than 1% of all melanomas, 0.1% of all rectal malignancies and 4% of anal malignancies. Diagnosis is frequently delayed as these lesions are often mistaken for haemorrhoids. Histological evaluation with special immunohistochemical stains is often necessary for definitive diagnosis. Due to the aggressive nature, 61% of patients with ARMM would already have lymph node involvement or distant metastases, by the time of diagnosis. Prognosis is usually poor with 5-year survival rate of <20%. We report a case of metastatic ARMM in an elderly lady who presented with symptoms and signs mimicking a haemorrhoid.

CASE REPORT: A 69-year-old lady presented with one year history of intermittent rectal bleed and an anorectal mass that was initially treated as haemorrhoid. Colonoscopy showed a hyperpigmented mass in the anorectal region which was confirmed as malignant melanoma on histopathological examination. Imaging with CT and MRI demonstrated locally advanced tumour with distant metastases to the liver and lung. Patient was referred for palliative management.

CONCLUSION: ARMM is a rare malignancy and often presented with non-specific clinical signs. Diagnosis is frequently delayed without high index of suspicion. MRI pelvis is the imaging of choice to assess local extent of disease. Histologic evaluation with special immunohistochemical stains is often necessary for definitive diagnosis. Prognosis is poor despite surgical and chemotherapeutic interventions.

Matched MeSH terms: Anus Neoplasms/pathology*; Rectal Neoplasms/pathology*

Fulltext Towards a Framework for Better Understanding of Quiescent Cancer Cells

Nik Nabil WN, Xi Z, Song Z, Jin L, Zhang XD, Zhou H, et al.

Cells, 2021 03 05;10(3).

PMID: 33807533 DOI: 10.3390/cells10030562

Quiescent cancer cells (QCCs) are cancer cells that are reversibly suspended in G0 phase with the ability to re-enter the cell cycle and initiate tumor growth, and, ultimately, cancer recurrence and metastasis. QCCs are also therapeutically challenging due to their resistance to most conventional cancer treatments that selectively act on proliferating cells. Considering the significant impact of QCCs on cancer progression and treatment, better understanding of appropriate experimental models, and the evaluation of QCCs are key questions in the field that have direct influence on potential pharmacological interventions. Here, this review focuses on existing and emerging preclinical models and detection methods for QCCs and discusses their respective features and scope for application. By providing a framework for selecting appropriate experimental models and investigative methods, the identification of the key players that regulate the survival and activation of QCCs and the development of more effective QCC-targeting therapeutic agents may mitigate the consequences of QCCs.

Matched MeSH terms: Neoplasms/pathology*

One patient, two lymphomas, three primaries

Eshra A, Al-Hendal A, Al Enezi M, Al-Mishaan M, Abo Dief W

Gulf J Oncolog, 2010 Jul.

PMID: 20601338

Concomitant adenocarcinoma and non-Hodgkin's lymphoma, both located in the intestinal tract, are unusual. Collision tumors of the colon on the other hand are extremely rare neoplasms. A case of true collision tumor of a marginal zone lymphoma and a moderately differentiated adenocarcinoma of the ascending colon (hepatic flexure) is reported. Simultaneously, a third primary is identified as follicular lymphoma involving the terminal ileum. Correlation with clinical history, radiology investigations, endoscopic findings and histological examination of the resected specimen as well as the use of ancillary techniques such as immunohistochemistry are the most useful in making the correct diagnosis of a synchronous three primaries involving the small bowel and colon. Therefore, we present these three primary synchronous neoplasms involving two different parts of the gastrointestinal tract, with two of these three primaries colliding at one organ.

Matched MeSH terms: Colonic Neoplasms/pathology*; Ileal Neoplasms/pathology*

Cellular protrusions--lamellipodia, filopodia, invadopodia and podosomes--and their roles in progression of orofacial tumours: current understanding

Alblazi KM, Siar CH

Asian Pac J Cancer Prev, 2015;16(6):2187-91.

PMID: 25824735

BACKGROUND: Protrusive structures formed by migrating and invading cells are termed lamellipodia, filopodia, invadopodia and podosomes. Lamellipodia and filopodia appear on the leading edges of migrating cells and function to command the direction of the migrating cells. Invadopodia and podosomes are special F-actin-rich matrix-degrading structures that arise on the ventral surface of the cell membrane. Invadopodia are found in a variety of carcinomatous cells including squamous cell carcinoma of head and neck region whereas podosomes are found in normal highly motile cells of mesenchymal and myelomonocytic lineage. Invadopodia-associated protein markers consisted of 129 proteins belonging to different functional classes including WASP, NWASP, cortactin, Src kinase, Arp 2/3 complex, MT1-MMP and F-actin. To date, our current understanding on the role(s) of these regulators of actin dynamics in tumors of the orofacial region indicates that upregulation of these proteins promotes invasion and metastasis in oral squamous cell carcinoma, is associated with poor/worst prognostic outcome in laryngeal cancers, contributes to the persistent growth and metastasis characteristics of salivary gland adenoid cystic carcinoma, is a significant predictor of increased cancer risk in oral mucosal premalignant lesions and enhances local invasiveness in jawbone ameloblastomas.

Matched MeSH terms: Facial Neoplasms/pathology*; Mouth Neoplasms/pathology*

Fulltext Appendicular metastasis from carcinoma cervix

Sudirman A, Sukumar N, Davaraj B

Med J Malaysia, 2001 Mar;56(1):100-1.

PMID: 11503286

A young lady who was treated for early squamous cell carcinoma of cervix presented with perforated appendicitis. Appendicectomy was done and the histopathology was reported as metastatic squamous cell carcinoma. Squamous cell carcinoma of the cervix metastasizing to the appendix is extremely rare and we previously unreported.

Matched MeSH terms: Appendiceal Neoplasms/pathology; Uterine Cervical Neoplasms/pathology*

Teratocarcinosarcoma of the nasal cavity and ethmoid

Sharma HS, Abdullah JM, Othman NH, Muhamad M

J Laryngol Otol, 1998 Jul;112(7):682-6.

PMID: 9775307

Sinonasal teratocarcinosarcoma is very unusual malignant neoplasm histologically consisting of an epithelial element and one or more mesenchymal components. This is a report of teratocarcinosarcoma, in a 74-year-old male, involving the right nasal cavity and ethmoids with intracranial extension. The tumour was totally resected via the craniofacial approach and the patient was given post-operative chemotherapy. Extensive tumour necrosis, rapid growth and local destruction are the prominent features of this tumour. The clinical presentation, pathological features and clinical course of this rare malignancy are discussed with a review of the literature.

Matched MeSH terms: Nose Neoplasms/pathology*; Paranasal Sinus Neoplasms/pathology*

High-grade malignant mucoepidermoid tumour of tongue. A case report

Ng KH, Siar CH

Singapore Dent J, 1989 Dec;14(1):42-5.

PMID: 2487475

Mucoepidermoid tumours of the minor salivary glands of the tongue are rarely encountered. A case of a high-grade malignant type is reported here. Merits of subdivision of the mucoepidermoid tumour on the basis of its malignant potential are outlined, and variations of histological presentation of the present tumour at its primary and nodal sites are discussed.

Matched MeSH terms: Submandibular Gland Neoplasms/pathology*; Tongue Neoplasms/pathology*

Tualang honey induces apoptosis and disrupts the mitochondrial membrane potential of human breast and cervical cancer cell lines

Fauzi AN, Norazmi MN, Yaacob NS

Food Chem Toxicol, 2011 Apr;49(4):871-8.

PMID: 21167897 DOI: 10.1016/j.fct.2010.12.010

Honey is reported to contain various compounds such as phenols, vitamins and antioxidants. The present study investigates the anticancer potential of Tualang honey (Agromas) (TH) in human breast (MCF-7 and MDA-MB-231) and cervical (HeLa) cancer cell lines; as well as in the normal breast epithelial cell line, MCF-10A. The cells were treated with increasing doses of TH (1-10%) for up to 72 h. Increase in lactate dehydrogenase (LDH) leakage from the cell membranes indicates that TH is cytotoxic to all three cancer cells with effective concentrations (EC(50)) of 2.4-2.8%. TH is however, not cytotoxic to the MCF-10A cells. Reactivity with annexin V fluorescence antibody and propidium iodide as analysed by flow cytometry and fluorescence microscopy shows that apoptosis occurred in these cancer cells. TH also reduced the mitochondrial membrane potential (Δψ(m)) in the cancer cell lines after 24h of treatment. The activation of caspase-3/7 and -9 was observed in all TH-treated cancer cells indicating the involvement of mitochondrial apoptotic pathway. This study shows that TH has significant anticancer activity against human breast and cervical cancer cell lines.

Matched MeSH terms: Breast Neoplasms/pathology*; Uterine Cervical Neoplasms/pathology*

Fulltext Primary retroperitoneal serous adenocarcinoma: A case report of rare malignancy with literature review

Win TT, Aye SN, Abdul Hamad NS, Tuan Sharif SE

Indian J Cancer, 2021 1 7;58(2):262-266.

PMID: 33402586 DOI: 10.4103/ijc.IJC_528_19

The primary retroperitoneal serous adenocarcinoma (PRSAC) is a rare malignant tumor of the retroperitoneum. It shares the same pathological and biological behavior with ovarian serous carcinoma. Most of the cases develop as peritoneal adenocarcinoma and rarely occur in the retroperitoneum. It is reported as serous surface papillary carcinoma of the peritoneum and extraovarian peritoneal serous papillary carcinoma. We present a case of PRSAC in a 60-year-old woman. Only 11 cases of PRSAC have been reported from 1983 to 2019. Histopathological features with immunohistochemical expressions are important to diagnose PRSAC. The outcome and survival mainly depend on the possibility of surgical resection. Molecular genetics of PRSAC should also be studied in relation with its ovarian counterpart.

Matched MeSH terms: Ovarian Neoplasms/pathology*; Retroperitoneal Neoplasms/pathology*

Fulltext Lymphangioleiomyomatosis with chylous ascites

Raymond AA, Isa MR, Abdullah T, Kudva MV

Singapore Med J, 1993 Jun;34(3):276-8.

PMID: 8266193

A 41-year-old Malay housewife presented with recurrent chylous ascites and progressive cachexia over 17 years. A diagnosis of lymphangioleiomyomatosis (LAM) was established by laparotomy where biopsy of the liver, peritoneum and adhesions from previous surgery showed smooth muscle proliferation in the blood vessels and lymphatics. Clinically and radiologically, there was no evidence of pulmonary involvement. She was treated with dietary fat restriction and medium-chain triglycerides. This is the first case of LAM reported in Malaysia.

Matched MeSH terms: Liver Neoplasms/pathology*; Peritoneal Neoplasms/pathology*

Fulltext Cutaneous metastases from head and neck squamous cell carcinoma

Poovaneswaran S, Paleri V, Charlton F, Dobrowsky W, Kelly C

Med J Malaysia, 2012 Aug;67(4):430-2.

PMID: 23082459 MyJurnal

The presence of cutaneous metastases in squamous cell carcinomas of the head and neck (SCCHN) is rare and associated with a dismal prognosis. It is vital to distinguish these lesions from direct invasion of the skin by SCCHN or primary cutaneous malignancies as the prognosis is vastly different and so is the management. In this case report, we present four cases of cutaneous metastases and also briefly review the literature pertaining to this phenomenon.

Matched MeSH terms: Hypopharyngeal Neoplasms/pathology*; Laryngeal Neoplasms/pathology*; Mouth Neoplasms/pathology*; Tonsillar Neoplasms/pathology*

Phytometabolites Targeting the Warburg Effect in Cancer Cells: A Mechanistic Review

Hasanpourghadi M, Looi CY, Pandurangan AK, Sethi G, Wong WF, Mustafa MR

Curr Drug Targets, 2017;18(9):1086-1094.

PMID: 27033190 DOI: 10.2174/1389450117666160401124842

Phytometabolites are functional elements derived from plants and most of them exhibit therapeutic characteristics such as anti-cancer, anti-inflammatory and anti-oxidant effects. Phytometabolites exert their anti-cancer effect by targeting multiple signaling pathways. One of the remarkable phenomena targeted by phytometabolites is the Warburg effect. The Warburg effect describes the observation that cancer cells exhibit an increased rate of glycolysis and aberrant redox activity compared to normal cells. This phenomenon promotes further cancer development and progression. Recent observations revealed that some phytometabolites could target metabolic-related enzymes (e.g. Hexokinase, Pyruvate kinase M2, HIF-1) in cancer cells, with little or no harm to normal cells. Since hyper-proliferation of cancer cells is fueled by higher cellular metabolism, phytometabolites targeting these metabolic pathways can create synergistic crosstalk with induced apoptotic pathways and sensitize cancer cells to chemotherapeutic agents. In this review, we discuss phytometabolites that target the Warburg effect and the underlying molecular mechanism that leads to tumor growth suppression.

Matched MeSH terms: Neoplasms/pathology

Optimal radiotherapy utilisation rate in developing countries: An IAEA study

Rosenblatt E, Barton M, Mackillop W, Fidarova E, Cordero L, Yarney J, et al.

Radiother Oncol, 2015 Jul;116(1):35-7.

PMID: 26164776 DOI: 10.1016/j.radonc.2015.06.012

Optimal radiotherapy utilisation rate (RTU) is the proportion of all cancer cases that should receive radiotherapy. Optimal RTU was estimated for 9 Middle Income Countries as part of a larger IAEA project to better understand RTU and stage distribution.

Matched MeSH terms: Neoplasms/pathology

Intratumour amyloidosis in Malaysians: an immunohistochemical study

Looi LM

Ann Acad Med Singap, 1986 Jan;15(1):52-6.

PMID: 3010797

Congo red screening of tumour material examined at the Department of Pathology, University of Malaya revealed intratumour deposits of amyloid in 12% of nasopharyngeal carcinomas, 66% of basal cell carcinomas, 100% of medullary carcinomas of the thyroid, 56% of islet cell tumours of the pancreas, 1 out of 16 carcinoids and 1 out of 100 thyroid adenomas. All the deposits were permanganate resistant and did not contain AA protein, indicating that what was encountered was not secondary amyloid. The deposits showed variable staining for immunoglobulin light chains and amyloid P component with a standard peroxidase antiperoxidase method. The possibility that intratumour amyloid has a neoplastic origin is discussed.

Matched MeSH terms: Nasopharyngeal Neoplasms/pathology; Neoplasms/pathology*; Pancreatic Neoplasms/pathology; Thyroid Neoplasms/pathology

Fibroadenoma of vulva

Ahluwalia HS, Gopinath A, Kumaradeva S

Med J Malaysia, 1978 Mar;32(3):215-6.

PMID: 683045

Matched MeSH terms: Vulvar Neoplasms/pathology*

Intracranial calcifications. II. Pathologic anatomy

Arumugasamy N

Med J Malaya, 1966 Dec;21(2):149-60.

PMID: 4227386

Matched MeSH terms: Brain Neoplasms/pathology*

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