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Case Report
DOI: 10.1016/j.htct.2021.01.007
Open Access
Available online 7 March 2021
COVID-19 and bleeding at unusual locations: Report of four cases
Balraj Singh
Corresponding author

Corresponding author at: Saint Joseph’s University Medical Center, 703 Main Street, Paterson, NJ, 07503, United States.
, Ashesha Mechineni, Parminder Kaur, Ro-Jay Reid, Michael Maroules
Saint Joseph’s University Medical Center, Paterson, NJ, United States
Received 21 October 2020. Accepted 27 January 2021
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Table 1. Summarizes the clinical characteristics, laboratory values, management and outcome of the four patients.
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Coronavirus disease-2019 (COVID-19) originated in the Huanan South China Seafood Market in Wuhan and can present with a spectrum of clinical manifestations including fever, myalgia, cough, dyspnea and, less frequently, headache, diarrhea, nausea, and vomiting.1 Although respiratory symptoms predominate, multiple organ dysfunction may also occur with COVID-19. Coagulopathy has been found as a prominent feature of COVID-19. A high incidence of thromboembolic complications in patients hospitalized with COVID-19 (pulmonary embolism, deep vein thrombosis, ischemic stroke, acute limb ischemia, acute portal vein thrombosis, acute mesenteric ischemia and ischemic myocardial injury) has been reported.2–6

The patients who are on some form of anticoagulation therapy predisposes them to the development of bleeding complications. Bleeding is a spectrum and can range from minor to major, or even life-threatening. Major bleeding has a significant risk of immediate morbidity, regardless of the cause. We report on four cases of COVID-19-associated pneumonia in patients who were started on therapeutic anticoagulation for COVID-19-associated hypercoagulability and who developed bleeding at unusual sites.

Case presentation

We report on four cases of COVID-19-associated pneumonia complicated by bleeding at unusual locations. Table 1 summarizes the clinical characteristics, laboratory values, management and outcome of the four patients. The median age was 82 years (ranging from 67 to 88 years) and 50% were male. Three patients were Hispanic and 1 was white. All of them presented with respiratory symptoms, except one who presented them after a fall. All the patients were diagnosed with pneumonia. COVID-19 was diagnosed by RT-PCR in all four, except in one (suspected COVID-19). All of them were admitted to the non-ICU unit and none of them were intubated during the hospitalization. Inflammatory markers, the erythrocyte sedimentation rate (ESR) and c-reactive protein (CRP), were elevated in all patients All the four patients were started on therapeutic anticoagulation (LMWH) due to an elevated D-dimer and based on clinical judgment. Two patients had chest wall hematoma (Figures 1 and 2). One patient had hematoma involving the left adductor muscle, proximal hamstring muscles, piriformis and gluteus maximus (Figure 3) and another one had hematoma in the anterior compartment of the right thigh (Figure 4). Two patients underwent surgical evacuation of the hematoma, one underwent computed tomography-guided drainage by an intervention radiologist and one patient was managed conservatively. None of the patients had any trauma or thrombocytopenia or overt disseminated intravascular coagulation (DIC) at the time of the bleeding episode or history of prior bleeding. One patient had elevated creatinine at the time of the bleeding episode (Case 3). Only one patient was on antiplatelet drugs at the time of the bleeding episode (Case 4 — clopidogrel 75 mg po QD). All the patients were discharged in stable condition.

Table 1.

Summarizes the clinical characteristics, laboratory values, management and outcome of the four patients.

Variable  Case 1  Case 2  Case 3  Case 4 
Age (years)  77  88  87  67 
Sex/Race  F/Hispanic  F/White  M/ Hispanic  M/Hispanic 
Medical history  DM, HTN, DLD, gastritis, asthma, hypothyroidism,  HTN, dementia  HTN, DLD, schizophrenia, BPH, depression,  DM, HTN, DLD, CAD s/p CABG, HFrEF, hypothyroidism 
Presenting complaints  Cough, SOB, dizziness  Fall  SOB  Cough, SOB 
COVID-19 diagnostic test RT-PCR  Positive  Negative  Positive  Positive 
Pneumonia  Yes  Yes  Yes  Yes 
Intubated  No  No  No  No 
Rx of COVID-19  HCQ, tocilizumab, remdesivir methylprednisolone  Doxycycline, Ceftriaxone  HCQ  HCQ, azithromycin, methylprednisolone 
Laboratory values On presentation         
WBC (K/mm38.1  9.6  10.2  10.8 
Hemoglobin (g/dL)/ hematocrit (%)  13.88/41.3  10.7/33.4  13.6/42.1  13.1/38.4 
Platelets (K/mm3211  180  224  332 
Sodium (mEq/ L)  136  136  138  136 
Potassium (mEq/ L)  3.7  3.8  4.9  4.7 
Chloride (mEq/ L)  104  101  102  101 
Bicarbonate (mEq/ L)  24  27  26  25 
BUN (mg/dL)  15  13  33  28 
Creatinine (mg/dL)  0.77  1.11  1.42  1.36 
AST/ALT (U/L)  21/11  23/16  52/14  36/19 
Bilirubin (mg/dl)  0.4  1.6  0.4  0.4 
PT/INR/PTT (sec)  12.3/0.9/34.3  ND  13.6/1.0/32  ND 
Fibrinogen (mg/dl)  542  ND  685  ND 
D-dimer (mcg/mL)  0.94  20  4.29  1.69 
Ferritin (ng/mL)  139  351  721  434 
CRP (mg/L)  123.1  94.3  174.5  211 
ESR (mm/hr)  40  81  63  112 
IL-6 (pg/mL)  60.4  ND  28.6  27.7 
Troponin (ng/mL)  0.01  ND  0.083  0.011 
Therapeutic anticoagulation- type/dose/day started/indication  Enoxaparin/85 mg Q12H SQ/Day 7/COVID-19- associated hypercoagulability  Enoxaparin/60 mg BID SQ/ Day 2/ COVID-19-associated hypercoagulability  Enoxaparin /80 mg Q12H SQ /Day 3/COVID-19-associated hypercoagulability  Enoxaparin/75 mg BID SQ/ Day 3/ COVID-19- associated hypercoagulability 
Site of bleeding/size of hematoma  Left chest wall hematoma/Size – 15 × 13 cm  Left chest wall hematoma/Size –4.2 × 13.8 × 11.7 cm  Left adductor muscle, proximal hamstring muscles piriformis and gluteus maximus/size- NR  Anterior compartment of right thigh /size- 17 × 5 × 4 cm 
Day of hospitalization corresponding to bleeding/ imaging used for diagnosis  Day 14/ CT chest angiography  Day 5/ CT chest angiography  Day 12/ CT abdomen pelvis without contrast  Day 14/ CT thigh with contrast 
Treatment for bleeding  PRBC and FFP transfusion and CT-guided drainage of chest wall hematoma  PRBC and FFP transfusion and surgical drainage of chest wall hematoma  Supportive care – PRBC transfusion  PRBC transfusion and surgical evacuation of hematoma 
Laboratory values at the time of bleeding episode         
WBC (K/mm314  9.8  18  7.6 
Hemoglobin (g/dL)/hematocrit (%)  10.1/30.8  9.6/31.7  6.8/20.8  13.6/38.6 
Platelets (K/mm3245  208  193  352 
BUN (mg/dL)  20  30  51  23 
Creatinine (mg/dL)  0.64  1.18  1.72  0.85 
PT/INR/PTT (sec)  17.9/1.5/34.1  16.8/1.4/37.7  14/1.1/33.1  13.1/1.0/26.7 
Fibrinogen (mg/dl)  101  193  500  ND 
FDP (mcg/mL)  ND  ND  <5  ND 
D-dimer (mcg/mL)  0.26  5.04  1.59  1.46 
ISTH criteria  NA 
Prior history of bleeding  No  No  No  No 
Trauma  No  No (History of fall prior to admission)  No  No 
Outcome  Discharged  Discharged  Discharged  Discharged 
Figure 1.

CT chest angiography large left chest wall hematoma involving left breast tissue and left pectoral musculature.

Figure 2.

CT chest angiography showing large multi-septated collection along left anterior to lateral chest wall with surrounding infiltration into latissimus dorsi and intercostal musculature.

Figure 3.

CT abdomen pelvis without contrast showing marked edema with areas of increased density involving left adductor muscle, proximal hamstring muscles, piriformis and gluteus maximus.

Figure 4.

CT thigh with contrast showing large hematoma in anterior compartment of right thigh.


Bleeding is less common than thrombosis in patients with COVID-19, but it may occur, especially in the setting of anticoagulation. Bleeding diathesis is likely multifactorial, related to the COVID-19 illness severity or anticoagulation. In our case series, the patients received therapeutic anticoagulation and showed significant bleeding events at unusual locations (with no overt risk factors for bleeding, such as DIC or thrombocytopenia, at the time of the bleeding episode).

Shah et al. conducted a multicenter retrospective observational study evaluating 187 COVID-19 patients in intensive care units (ICUs) of four tertiary hospitals. A total of 178 patients (95.1%) were on either prophylactic or therapeutic anticoagulation. Fifteen patients (8.0%) developed hemorrhagic complications, of which 9 (4.8%) were classified as major bleeding. Nearly all patients were male (n = 14) and gastrointestinal bleeding was the most common site. Other sites in which bleeding was reported were intracranial, genitourinary, epistaxis and tracheostomy. Five patients who experienced major bleeding were on therapeutic anticoagulation and 4 patients were on standard thromboprophylaxis.7 No patients had overt DIC or a fibrinogen concentration of less than 1.5 g/L. In our case series, all the patients were admitted to the non-ICU unit, bleeding occurred at unusual sites and none of the patients had any trauma, thrombocytopenia or overt DIC at the time of the bleeding episode.

Tang et al. reported on a study in which 449 patients with severe COVID‐19 were enrolled, 99 of whom had received heparin (94 received LMWH 40–60 mg enoxaparin/d and five received unfractionated heparin 10,000–15,000 U/d for 7 days or longer), the 28‐day mortality of heparin users was lower than nonusers in patients with sepsis-induced coagulopathy SIC score ≥4 (40.0% vs. 64.2%, p = .029), or D‐dimer >6‐fold the normal upper limit (32.8% vs. 52.4%, p = .017), suggesting the anecdotal observation that thromboprophylaxis with heparin decreased mortality in patients with severe COVID-19 meeting sepsis-induced coagulopathy criteria or with markedly elevated D-dimer levels.8 In a study by Klok et al. on 184 ICU patients with COVID-19 pneumonia, a 31% incidence of thrombotic complications was found, however, none of the patients developed overt DIC.9

Erdinc et al. reported on a case of concurrent spontaneous retroperitoneal and massive acute deep vein thrombosis at the initial presentation of COVID-19.10 The patient was not on any anticoagulation medication before presentation. Mazzitelli et al. reported on three COVID-19 patients who developed spontaneous and severe muscle hematomas (psoas and adductor muscle). The patents were started on low molecular weight heparin for paroxysmal atrial fibrillation.11 Conti et al. reported on two cases of spontaneous ileo-psoas hematomas in hospitalized COVID-19 pneumonia patients. One patient was on prophylactic medication and one, on a therapeutic dose of anticoagulation medication for deep venous thrombosis.12

Daily monitoring of biomarkers, including D-dimer, as a means to guide intensity of anticoagulation management is not recommended.13 Despite the lack of prospective data, many institutions have adopted thromboprophylaxis protocols with intermediate-dose, or even therapeutic-dose, anticoagulation therapy. The American Society of Hematology (ASH) recommends that all hospitalized adults with COVID-19 receive pharmacologic thromboprophylaxis with LMWH over unfractionated heparin to reduce contact, unless the risk of bleeding outweighs the risk of thrombosis. Whether critically ill COVID-19 patients should receive therapeutic-intensity anticoagulation in the absence of confirmed or suspected venous thromboembolism (VTE) is currently unknown. Proper patient selection to identify patients at higher risk for bleeding, while at the same time weighing it against the risk of thrombosis, may help firmly establish the role of anticoagulation in patients with COVID-19. Randomized trials are ongoing to determine the optimal approach to thrombosis prevention in COVID-19 patients.

In conclusion, significant bleeding at unusual sites can occur in COVID-19 patients upon anticoagulation treatment (both prophylactic and therapeutic) and, therefore, a high degree of suspicion and careful clinical monitoring is required. Our case and review of the literature emphasize the importance of limiting anticoagulation to appropriate indications.

Conflicts of interest

The authors declare no conflicts of interest.



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Hematology, Transfusion and Cell Therapy

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