1.Double Philadelphia chromosome-positive B acute lymphoblastic leukaemia in an elderly patient
Tang Yee-Loong ; Raja Zahratul Azma Raja Sabudin ; Leong Chooi-Fun ; Clarence Ko Ching-Huat
The Malaysian Journal of Pathology 2015;37(3):275-279
A rare case of double Philadelphia chromosome-positive B Acute lymphoblastic Leukaemia (B-ALL)
is reported here. A 60-year-old lady presented with one month history of fever, submandibular
lymphadenopathy, loss of appetite and weight loss. Physical examination revealed multiple palpable
cervical lymph nodes. Blood film showed leucocytosis with 72% blasts. Bone marrow assessment
confirmed a diagnosis of B-ALL with presence of double Philadelphia (Ph) chromosomes. As she was
very ill, she was initially treated with an attenuated regimen of induction chemotherapy consisting
of rituximab, cyclophosphamide, vincristine and prednisolone (R-CVP) along with intrathecal
chemotherapy comprising methotrexate, cytarabine and hydrocortisone. Bone marrow examination
post-induction chemotherapy showed >5% blasts. She was subsequently re-induced with rituximab,
cyclophosphamide, doxorubicin, vincristine and prednisolone (R-CHOP) along with intrathecal
chemotherapy, following which she went into complete remission. Consolidation chemotherapy
consisting of methotrexate, methylprednisolone, cytarabine, intrathecal chemotherapy and imatinib
was subsequently administered followed by maintenance chemotherapy consisting of vincristine,
prednisolone and imatinib (IDEAMOP). She developed spontaneous bruises and relapsed four
months into her maintenance chemotherapy with 90% blasts in the bone marrow which was treated
with fludarabine, cytarabine and granulocyte colony stimulating factor (FLAG). Unfortunately she
developed neutropenic sepsis which was complicated by invasive lung aspergillosis. Bone marrow
examination post-FLAG showed 80% blasts. Despite aggressive antifungal therapy, her lung infection
worsened and she finally succumbed to her illness 13 months after the initial diagnosis. We highlight
a rare case of elderly B-ALL with double Ph chromosomes which carries a poor prognosis despite
aggressive treatment for the disease and its complications.
2.An Audit on Overnight Transfusion Practice in A Teaching Hospital in Malaysia
The Malaysian Journal of Pathology 2019;41(2):161-167
Introduction: Overnight transfusion (OT) is the blood transfusion taking place from 9pm to 8am. During this period, patients are exposed to increased risk of errors. This cross-sectional study aims to determine the incidence and practice of OT in Universiti Kebangsaan Malaysia Medical Centre. Materials & Methods: Data from all OT in June and mid-July 2017 were collected from recipients’ cards, transfusion request forms and patient’s case files, regarding discipline involved, indications, time intervals from request of blood transfusion to the completion of OT on patients, monitoring of patients and adverse reactions. Results: A total of 1285 transfusion cases were identified during the study period. 216 (16.8%) cases were OT while the 1069 (83.2%) cases were non-OT. Surgery discipline has the highest (30.1%) OT. The indications of OT were acute clinical need: 82.9%, less acute clinical need: 13.9% and no clinical need: 3.2%. A huge delay (average: 5 hours 40 minutes) in starting transfusion after grouping and crossmatching (GXM) completion was noted. Besides, 25.9% cases took >4 hours to complete OT; 83.4% cases did not have proper transfusion monitoring and three transfusion reactions were reported. Discussion: Although most of the OT cases had appropriate clinical indications, the transfusion can be commenced earlier at day time rather than overnight. Cases without absolute indication should avoid OT. The poor monitoring of patient during OT had posed risks to patients’ life if an adverse transfusion reaction happened. The major reason for OTs was a huge delay in starting transfusion after the GXM completion. The contravention of 4-hour infusion rule increased the patients’ risk of developing bacterial sepsis. The practice of OT should be discouraged wherever possible except for clinically indicated cases.
overnight transfusion
3.Dismal outcome of therapy-related myeloid neoplasm associated with complex aberrant karyotypes and monosomal karyotype: a case report
Tang Yee-Loong’ Chia Wai-Kit ; Yap Ernie Cornelius Sze-Wai ; Julia Mohd Idris ; Leong Chooi-Fun ; Salwati Shuib ; Wong Chieh-Lee
The Malaysian Journal of Pathology 2016;38(3):315-319
Introduction: Individuals who are exposed to cytotoxic agents are at risk of developing therapyrelated
myeloid neoplasms (t-MN). Cytogenetic findings of a neoplasm play an important role in
stratifying patients into different risk groups and thus predict the response to treatment and overall
survival. Case report: A 59-year-old man was diagnosed with acute promyelocytic leukaemia.
Following this, he underwent all-trans retinoic acid (ATRA) based chemotherapy and achieved
remission. Four years later, the disease relapsed and he was given idarubicin, mitoxantrone and
ATRA followed by maintenance chemotherapy (ATRA, mercaptopurine and methotrexate). He
achieved a second remission for the next 11 years. During a follow-up later, his full blood picture
showed leucocytosis, anaemia and leucoerythroblastic picture. Bone marrow examination showed
hypercellular marrow with trilineage dysplasia, 3% blasts but no abnormal promyelocyte. Fluorescence
in-situ hybridisation (FISH) study of the PML/RARA gene was negative. Karyotyping result
revealed complex abnormalities and monosomal karyotype (MK). A diagnosis of therapy-related
myelodysplastic syndrome/myeloproliferative neoplasm with unfavourable karyotypes and MK was
made. The disease progressed rapidly and transformed into therapy-related acute myeloid leukaemia
in less than four months, complicated with severe pneumonia. Despite aggressive treatment with
antibiotics and chemotherapy, the patient succumbed to the illness two weeks after the diagnosis.
Discussion and Conclusion: Diagnosis of t-MN should be suspected in patients with a history of
receiving cytotoxic agents. Karyotyping analysis is crucial for risk stratification as MK in addition
to complex aberrant karyotypes predicts unfavourable outcome. Further studies are required to
address the optimal management for patients with t-MN.
4.The crucial role of molecular testing to facilitate the diagnosis of pneumocystis pneumonia during pregnancy
Chuan Hun DING ; Hamidah YUSOFF ; Najihan Abdul Samat Muttaqillah ; Yee Loong TANG ; Toh Leong TAN ; Petrick PERIYASAM ; Andrea Yu-Lin BAN
The Malaysian Journal of Pathology 2018;40(1):67-72
Pneumocystis pneumonia is an important human immunodeficiency virus (HIV)-associated opportunistic infection, and especially so in pregnant HIV-positive patients. We report a case of a 40-year-old woman in her first trimester of pregnancy who initially presented with acute gastroenteritis symptoms but due to a history of high-risk behaviour and the observation of oral thrush, she was worked up for HIV infection. Her retroviral status was positive and her CD4+ T cell count was only 8 cells/mL. She was also worked up for pneumocystis pneumonia due to the presence of mild resting tachypnoea and a notable drop in oxygen saturation (from 100% to 88%) following brief ambulation. Her chest radiograph revealed bilaterally symmetrical lower zone reticular opacities and Giemsa staining of her bronchoalveolar lavage (BAL) was negative for Pneumocystis jirovecii cysts. However, real-time P. jirovecii polymerase chain reaction (PCR) testing on the same BAL specimen revealed the presence of the organism. A course of oral co-trimoxazole plus prednisolone was commenced and her clinical condition improved.