The plural forms for the singular lumen is lumina or lumens, both are accepted plural forms.
suffix penia means
There are two accepted plural forms of the noun lumen:lumenslumina
-ostomy is the medical terminology combining form meaning surgical creation of an artificial opening into a lumen.
esophagogastroduodenoscopies is the plural form
The plural and possessive of the abbreviation works better if the acronym is used: MD (no periods) or the title spelled out: Medical Doctor.The plural for of the acronym MD is MDs.The plural possessive form is MDs'.The plural form of the compound noun Medical Doctor is Medical Doctors.The plural possessive form is Medical Doctors'.
The plural form for stimulus is stimuli.
The plural of stoma is stomata.
The plural form of the word angiogaphy is "angiographies".
The medical term for the inner diameter of a tube is "lumen."
Correct plural of lumen is lumina. (From the latin). However, people seem to accept lumens these days. For example, the correct plural of formula is formulae, but people tend to say formulas.
cuspi
Diagnoses is the plural of diagnosis
No. The medical term dysphagia means trouble swallowing. It is not singular or plural.