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What is Uterine malformation and explain in detail?
A uterine malformation is a type of female genital malformation resulting from an abnormal development of the Müllerian duct(s) during embryogenesis. Symptoms range from amenorrhea, infertility, recurrent pregnancy loss, and pain, to normal functioning depending on the nature of the defect.

Types
The American Fertility Society (now American Society of Reproductive Medicine) Classification distinguishes:

Class I—Müllerian agenesis (absent uterus).
This condition is represented by the hypoplasia or the agenesis (total absence) of the different parts of the uterus:
Vaginal hypoplasia or agenesis
Cervical hypoplasia or agenesis
Fundal hypoplasia or agenesis (absence or hypoplasia of the fundus of the uterus)
Tubal hypoplasia or agenesis (absence or hypoplasia of the Fallopian tubes)
Combined hypoplasia the agenesis of different part of the uterus
This condition is also called Mayer-Rokitansky-Kuster-Hauser syndrome. The patient with MRKH syndrome will have primary amenorrhea.
Class II—Unicornuate uterus (a one-sided uterus).
Rare condition in which a partial or complete lack of one Müllerian duct is present. The uterus has a typical "banana shape" on imaging systems. This condition can be sub-classified in:
Communicating: a rudimentary uterine horn is formed and it presents a cavity that communicates with the body of the uterus
Non-communicating: a rudimentary uterine horn is formed and it presents a cavity that does not communicate with the body of the uterus
No cavity: a rudimentary uterine horn is present without any cavity
No horn: there is no rudimentary uterine horn, just the functioning one is presentClass III—Uterus didelphys, also uterus didelphis (double uterus).
Both Müllerian ducts develop but fail to fuse, thus the patient has a "double uterus". This may be a condition with a double cervix and a vaginal partition (v.i.), or the lower Müllerian system fused into its unpaired condition. See Triplet-birth with Uterus didelphys for a case of a woman having spontaneous birth in both wombs with twins.
Class IV—Bicornuate uterus (uterus with two horns).
Only the upper part of that part of the Müllerian system that forms the uterus fails to fuse, thus the caudal part of the uterus is normal, the cranial part is bifurcated. The uterus is "heart-shaped". This condition can be complete or partial.
Class V—Septated uterus (uterine septum or partition).
The two Müllerian ducts have fused, but the partition between them is still present, splitting the system into two parts. With a complete septum the vagina, cervix and the uterus can be partitioned. Usually the septum affects only the cranial part of the uterus. A uterine septum is the most common uterine malformation and a cause for miscarriages