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low-grade appendiceal mucinous neoplasm

Wednesday 18 May 2016

LAMN / mucinous neoplasms of the appendix, LAMNs

Images

- Low-grade appendiceal mucinous neoplasm (LAMN) : Macroscopy

- Low-grade appendiceal mucinous neoplasm (LAMN) : Microscopy

- Typical undulating and flattened epithelium resting on fibrous stroma in appendiceal LAMN

Ovarian metastasis

Features in favor of metastatic LAMN
- Bilaterality
- pseudomyxoma peritonei
- subepithelial clefts
- scalloped glands
- pseudomyxoma ovarii
- tall cells

Differential diagnosis

- teratoma-associated mucinous tumors

See also

- appendiceal tumors

- appendix

  • appendiceal pathology / pathology of the appendix

Open references

- Mucinous neoplasms of the appendix: a current comprehensive clinicopathologic and imaging review. 2013. doi : 10.1102/1470-7330.2013.0003
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3582328/