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The 2019 novel coronavirus (2019-nCoV) originated in Wuhan City of China. In India, first confirmed case of coronavirus disease (COVID-19) was reported on January 30, 2020 and India is presently hit by second wave of COVID-19. The aim of the present study was to evaluate bone marrow findings of COVID-19 by minimally invasive autopsies to aid in understanding pathophysiology of the disease. This prospective study was conducted at tertiary care centre of Western Rajasthan. After obtaining approval from Institute's ethics committee and consent from next of kins, minimally invasive autopsies were conducted in 37 COVID-19 deceased patients within an hour after the death. The tissue specimens were processed with standard biosafety measures. Electronic medical records were reviewed retrospectively and patients' clinical details and results of laboratory investigations were noted. In this prospective study, bone marrow biopsies were collected from 37 COVID-19 minimally invasive autopsies. Mean age of these cases was 61.8 years and male: female ratio was 2.36. Comorbidities were observed in 25 (67.5%) of all cases. Histopathological analysis revealed hypercellular, normocellular and hypocellular marrow in 5, 25 and 5 cases respectively (two biopsies were inadequate). There was marked interstitial prominence of histiocytes in 24 (68.5%) cases. Out of these, evidence of haemophagocytosis was observed in 14 (40%) cases, marked increase of haemosiderin laden macrophages in 20 (57.1%) cases. There was prominence of plasma cells in 28 (80%) cases. The present study attempted to fill the gap of dearth of literature from our country in COVID-19 autopsy studies by highlighting bone marrow findings. The data support the evidence of development of secondary haemophagocytic lymphocytosis in COVID-19 cases.

β-Thalassaemia, the most common monogenic disorder, is characterized by genetic heterogeneity at the molecular level. More than 300 mutations of the β globin gene have been characterized all over the world, however, few common mutations account for majority of the cases in various populations. The present study aimed to screen known cases of β-thalassaemia in the Western part of Rajasthan state for five common mutations. The study included 144 known cases of β-thalassaemia of all clinical phenotypes. Cases were diagnosed based on clinical features, haematology investigations including haemogram and Hb-HPLC. Blood samples from cases were taken for mutation analysis. After DNA extraction, mutations were characterized by the polymerase chain reaction method employing allele specific priming technique (AMRS) to study the five mutations including IVS-I-5 (G → C), IVS-I-1 (G → T), CD41/42 (–TCTT), CD 8/9 (+G) and 619 bp deletion from the 3′ end of the β-globin gene using a total of seven different primers. Of all 144 cases, 74 (51.38% of all) cases were of β-thalassaemia major, five (3.4% of all) cases were of β-thalassaemia intermedia and 65 (45.14% of all) cases were of β-thalassaemia minor. Mutation analysis revealed that five common mutations were present in 130 (90.27% of all) cases. Among identified mutations, highest frequency of mutation was of IVS-I-5 (G → C) identified in 73 cases (50.7% of all cases). In 11 (7.63% of all) cases, more than one mutation was identified. β-Thalassaemias are common in Western Rajasthan; however, there is dearth of literature from this part of the country. We observed that five common mutations are common in this part of the country also. These observations are helping us in forming the basis for comprehensive diagnostic database that would not only be useful for genetic counselling but also for prenatal diagnosis.

Bone marrow microenvironment plays a crucial role in the growth of hemopoietic cells and bone marrow function, which in turn depends on an intact microvasculature. Our study assesses the microvessel density (MVD) in the bone marrow of aplastic anemia (AA) patients, compares with MVD of controls and MVD among the different types of AA. Bone marrow specimens from 60 patients with AA and 17 controls were studied. There were 33 patients with non severe AA (NSAA), 12 patients with severe AA (SAA) and 15 patients with very severe AA (VSAA). MVD was calculated on sections stained immunohistochemically for CD34. The mean bone marrow MVD in AA group was 1.28 ± 0.36, being significantly lower than that in control group (6.80 ± 1.59, p

Aplastic anemia (AA) is a life-threatening bone marrow failure disorder, if untreated, is associated with very high mortality. Allogenic bone marrow transplantation (BMT) is the standard of care for severe aplastic anemia (SAA) patients those who are younger than 40 years of age. The development of secondary malignancies in post-BMT setting for AA is a rare, however, well documented phenomenon. Among the secondary malignancies, development of acute myeloid leukemia is even rarer entity. Here we report a case of acute myeloid leukemia following human leucocyte antigen (HLA) matched sibling peripheral blood stem cell transplant (PBSCT) in a case of SAA. The patient achieved complete remission (CR) following chemotherapy and in CR1, a second HLA matched PBSCT from a different donor was offered. The patient is presently in remission at day +180 post-PBSCT.

Dear editor, Priapism, that is, persistent penile erection that continues hours beyond, or is unrelated to, sexual stimulation, is a relatively uncommon disorder and is a medical emergency. Typically, only the corpora cavernosa are affected [1]. The term priapism was derived from the Greek god Priapus, son of Aphrodite who was born with oversized genitals [2]. The haematological causes for priapism include Sickle cell anaemia, Leukaemia, Multiple myeloma, Paroxysmal nocturnal haemoglobinuria, Thalassaemia, Thrombocythemia and Henoch–Schonlein purpura [3]. As far as hemoglobinopathies are concerned, priapism is most often encountered in sickle cell disease in 38–42 % of cases followed by sickle/beta thalassemia [4, 5]. Priapism is also noted in patients with sickle cell trait even though the incidence is low as compared with sickle cell anaemia [6–9]. However, so far priapism in Hb E homozygosity is not reported in literature. In this correspondence we intend to bring to notice an unusual association of priapism with Hb E homozygosity. A 27 years old male, resident of North Eastern part of India was referred to our haematology OPD to rule out any underlying haematological disorder as the individual had an episode of priapism 3 months ago. The patient had an episode of unprovoked painful persistent erection for more than 8 h for which he sought medical advice. The surgeon at that medical center had managed with therapeutic needle aspiration from corpora cavernosa combined with flushing of cavernosa with normal saline to clear the sludged blood. The patient’s symptom subsided subsequently with the intervention and was referred to our center for further evaluation. On detailed clinical history, the individual was not on any medication for chronic illnesses; neither was he abusing any psychoactive drugs, alcohol, no history of prior trauma to the perineal region. His physical examination revealed mild pallor. There was no hepatosplenomegaly or lymphadenopathy. Systemic examination did not reveal any abnormality. On USG abdomen, spleen was not reported as enlarged (Span 13 cms). On investigations, haemoglobin, total leucocyte count and platelet count were 9.1 gm/dL, 7.1 9 10/lL and 118 9 10/lL respectively. Peripheral smear examination revealed microcytic hypochromic red cells and target cells with normal differential leucocyte count and reticulocyte count of one percent. There were no sickle cells or atypical cells in peripheral smear and sickling test was also negative. Subsequently Hb HPLC was performed which revealed with Hb A2 ? E of 92.6 % (Retention time3.68 min), Hb A of 6 % (Retention time 2.29 min) and Hb F (Retention time 1.06 min) of 1.6 % (Fig. 1; Table 1). This was followed by parental study which revealed Hb A2 ? E in mother and father of 29 and 27 % respectively suggestive of both parents being heterozygous for Hb E, S. Venkatesan A. Purohit (&) M. Aggarwal P. K. Singh T. Seth H. P. Pati Department of Hematology, All India Institute of Medical Sciences, New Delhi, India e-mail: purohitabhi80@gmail.com

Diagnosis of immune thrombocytopenia (ITP) is based on clinical suspicion and normal peripheral smear except for thrombocytopenia. Bone marrow examination is carried out to rule out leukemia, myelodysplastic syndrome or aplastic anemia. However, in most cases, clinical diagnosis is not altered after the bone marrow reports. Hence, this present study was carried out to evaluate the justification for bone marrow examination in the setting of isolated thrombocytopenia. All patients presenting to the hematology OPD with isolated thrombocytopenia and suspected diagnosis of ITP, between October 2011 and April 2013, were included in the study. Data was collected from bone marrow reports and outpatient records. A total of 353 cases were found. 319 cases had features of typical ITP and the rest had some form of organomegaly and/or lymphadenopathy. Bone marrow examination in all cases revealed normal hematopoietic elements and prominence of megakaryocytes including juvenile forms with no novel diagnosis in any patient. Routine use of bone marrow examination in the diagnostic workup of isolated thrombocytopenia is not required in our center even if steroids are planned as a first line therapy. However, a detailed history, thorough examination with complete hemogram and peripheral smear examination are essential.

Pleural effusions in acute myeloid leukemia (AML) can have wide differential diagnosis, however AML presenting as pleural effusion with leukemic infiltration is rarely documented. A 22 year old male presented with pleural effusion for 3 months and subsequently diagnosed as AML M2, which prompted us for this communication.