Short answer
Teardrop cells, also called dacrocytes, are red blood cells shaped like drops. A few can sometimes reflect smear preparation, but a meaningful pattern can point toward marrow fibrosis, marrow infiltration, severe anemia, or a leukoerythroblastic blood picture. The finding is interpreted with the CBC, smear quality, nucleated red cells, immature white cells, platelets, symptoms, and trend.
How to frame the finding
| Pattern | Common next question | Why it matters |
|---|---|---|
| Rare teardrops only | Could this be artifact or a nonspecific minor finding? | Slide area and preparation matter. |
| Teardrops plus NRBCs or immature granulocytes | Is this a leukoerythroblastic pattern? | Marrow stress or infiltration becomes more relevant. |
| Teardrops with anemia or abnormal platelets | Does the pattern suggest marrow fibrosis or another marrow process? | Hematology review may be needed. |
What the pattern can mean
Teardrops are most meaningful when they appear with other marrow-stress clues. MedlinePlus notes that teardrop-shaped cells may be seen with myelophthisic processes, bone marrow cancer, myelofibrosis, severe iron deficiency, or thalassemia major. In the right setting, the smear becomes a clue to look for why the marrow is being pushed, crowded, or remodeled.
A blood smear can also be limited by slide quality, so a small number of teardrops alone is not enough to label a marrow disorder. The next step is usually to decide whether the smear pattern matches the CBC, symptoms, spleen size, and any known cancer, inflammatory disease, or iron problem.
When to act
Act more quickly if the result comes with shortness of breath, chest pain, bleeding, jaundice, fever, severe weakness, low oxygen, very low hemoglobin, low platelets, blasts, or a known cancer or marrow disorder. Those are the settings where a smear pattern can be part of a more urgent marrow or hemolysis problem instead of a minor lab curiosity.
When another test matters more
Sometimes the smear finding is only one clue in a larger pattern. If the CBC, hemolysis markers, symptoms, or repeat smear do not fit, a different test or a broader specialist review may answer the question better than the morphology label by itself.
FAQ
Do teardrop cells always mean cancer?
No. They can show up in benign or nonspecific settings, but a persistent or prominent pattern raises concern for marrow stress or infiltration.
Can teardrop cells be an artifact?
Yes. A few isolated cells can come from slide preparation, so the overall smear pattern matters more than one cell shape.
What other smear clues make teardrops more important?
NRBCs, immature granulocytes, anemia, abnormal platelets, and a leukoerythroblastic picture make the finding more meaningful.
What conditions are often considered?
Myelofibrosis, myelophthisic anemia from marrow infiltration, severe iron deficiency, and thalassemia major are common considerations.
What follow-up is common?
Clinicians may repeat the smear, review CBC indices, check iron studies or hemolysis markers, and refer to hematology if the pattern persists.
Why do people mention the spleen?
Spleen enlargement can appear in marrow-fibrosis and infiltrative states, so it helps interpret the smear in context.
When should teardrop cells be treated as urgent?
Prompt medical guidance is important if teardrop cells appear with severe shortness of breath, chest pain, bleeding, jaundice, low hemoglobin, low platelets, blasts, or a smear that suggests marrow infiltration or leukoerythroblastic change.
Questions to ask
- How many teardrop cells were reported, and was the smear reviewed by a pathologist?
- Are NRBCs, immature granulocytes, blasts, anemia, platelet changes, or spleen enlargement present?
- Could iron deficiency, thalassemia, marrow fibrosis, or marrow infiltration be part of the differential?
- Does the report recommend repeat smear, additional labs, or hematology follow-up?
What follow-up may include
Follow-up may include a repeat smear, iron studies, reticulocyte count, bilirubin, LDH, and other hemolysis markers when the pattern is unclear. If the teardrop cells are persistent or appear with NRBCs, immature granulocytes, anemia, low platelets, or splenomegaly, hematology review and marrow-focused testing may be more appropriate.
Related guides: peripheral blood smear, NRBC present on CBC, high immature granulocytes, and blasts on CBC.